Faygo, pabrik Wanplas, is a specialized manufacturer of plastic pipe and profile extrusion lines with 22 years of dedicated experience in this field. The company operates three specialized factories, with its pipe and profile facility covering 26,650 square meters in Zhangjiagang City, only two hours from Shanghai airport, and reaches customers across 100 plus exported regions through the Wanplas group network. This article explains how an anti corrosion HDPE chemical garis ekstrusi pipa is designed and operated for factory acid alkali medium transportation pipelines, and how Faygo configures these lines for stable, fully welded, long service life pipe systems.
Chemical plants, electroplating shops, pharmaceutical sites and mining operations move aggressive liquids every day: dilute sulfuric acid, hydrochloric acid, sodium hydroxide, mixed process waste, organic solvents and abrasive slurries. Carbon steel corrodes, lined steel is costly to maintain, and rigid PVC is limited in temperature and impact resistance. High density polyethylene, particularly PE100 grade HDPE with MRS 10 MPa rating, offers a corrosion free, lightweight and weldable alternative that is produced continuously on a garis ekstrusi pipa. The following sections cover the media that HDPE resists, why it is chosen, how the material grades and pressure classes work, the full extrusion process, the sizing and cooling technology, quality control, welding, defect troubleshooting, line speed and capacity, maintenance, plant layout, safety and the Faygo line configurations available for this application.
1. Application Scenarios and Chemical Media
An anti corrosion HDPE chemical garis ekstrusi pipa produces pipe intended to carry aggressive media inside process plants and between plant battery limits. The pipe must survive continuous contact with the medium, resist permeation, keep a smooth bore for flow, and join into a leak free network. HDPE is selected when the medium is corrosive, when weight and installation cost matter, and when a homogeneous welded joint is preferred over flanged metal sections.
The table below summarizes the chemical resistance of HDPE against typical factory media. Resistance ratings are technical, based on the non polar, saturated hydrocarbon structure of polyethylene, and should always be verified against the actual concentration, temperature and exposure time. No brand or formulation name is referenced because the pipe is made from generic PE100 or PE80 grade HDPE compound.
HDPE chemical resistance against common factory media
| Menengah | Typical condition | HDPE resistance | Technical note |
|---|---|---|---|
| Sulfuric acid (dilute) | up to 60 percent, ambient to 40 C | Excellent | Stable at low to medium concentration |
| Hydrochloric acid | up to 35 percent, ambient | Excellent | Non oxidizer, well tolerated |
| Sodium hydroxide | up to 50 percent, ambient to 60 C | Excellent | No hydrolysis of polyolefin |
| Mixed process waste | variable pH, salts | Good | Verify concentration and temperature |
| Aliphatic hydrocarbons | fuel oil, gasoline | Good | Slight swelling at high temperature |
| Aqueous salt solutions | brine, chlorides | Excellent | No chloride stress cracking like steel |
| Aromatic solvents | benzene, toluene | Limited | Swelling and loss of strength |
| Chlorinated solvents | methylene chloride | Not recommended | Severe attack on polyolefin |
| Strong oxidizers | conc. nitric, chromic acid | Not recommended | Oxidative degradation |
| Abrasive slurry | tailings, fly ash | Good | Low friction bore reduces wear |
Untuk media yang dicatat terbatas atau tidak disarankan, pabrik harus beralih ke lapisan yang tahan kimia atau polimer yang berbeda, dan garis ekstrusi bukanlah faktor penentu. Nilai HDPE terletak tepat pada keluarga besar asam, basa, dan garam yang mendominasi limbah pabrik dan tugas transfer intermediet.
Resistance is never absolute; it moves with both concentration and temperature. A medium that is fully tolerated at ambient temperature can attack the polymer at elevated temperature because molecular motion increases and permeation accelerates. Similarly a dilute acid may be safe while the same acid at high concentration becomes aggressive. For this reason the pipe specifier records the worst case concentration and the highest continuous and peak temperature of the duty, then selects the PE grade and the SDR against that envelope. The non polar, saturated carbon chain of HDPE is why it ignores most aqueous corrosives: there is no ester, amide or metal site for acid or alkali to attack, so the material neither dissolves nor hydrolyzes in water based media. This chemical inertness is what makes an anti corrosion HDPE chemical garis ekstrusi pipa a durable choice for continuous acid alkali service rather than a coated metal compromise.
2. Why Choose HDPE for Corrosive Medium Transport
HDPE earns its place in chemical pipelines because it is inert to most aqueous corrosives, it is light enough to handle without cranes at small diameters, it is flexible enough to absorb ground movement, and it forms homogeneous welded joints. Compared with alternative piping materials, HDPE trades some temperature ceiling for much simpler corrosion management and lower lifetime cost of ownership.
Comparison with PVC, PP, steel lined and FRP
| Material | Ketahanan terhadap bahan kimia to acids/alkalis | Continuous temp ceiling | Density (g/cm3) | Joint reliability | Install difficulty |
|---|---|---|---|---|---|
| HDPE (PE100),, | Excellent for aqueous acids/alkalis | up to 40 C service, 60 C short | 0.95 | Excellent (butt fusion) | Easy |
| PVC (rigid) | Good, but brittle on impact | up to 60 C | 1.40 | Solvent cement, moderate | Moderate |
| PP | Good, better temp than HDPE | up to 80 C | 0.91 | Welded, good | Moderate |
| Steel with anti corrosion lining | Good if lining intact | high, above 100 C | 7.85 | Flanged, leak risk at gasket | Hard |
| FRP (fiber kaca yang diperkuat) | Good, resin dependent | up to 90 C resin dependent | 1.5 to 2.0 | Adhesive or flange, skill dependent | Hard |
The comparison is material to material, not brand to brand. HDPE wins on corrosion freedom and joint integrity for aqueous acid alkali service at moderate temperature, while PP or lined steel take over when the temperature exceeds the HDPE ceiling. The extrusion line is engineered so the resulting pipe keeps the wall uniformity that makes these properties reliable in the field.
3. PE100 and PE80 Material Grades, SDR and Kelas Tekananes
Polyethylene pipe compounds are graded by their hydrostatic design basis. PE80 and PE100 are the two common grades for pressure pipe, defined by their Minimum Required Strength (MRS) in MPa at 20 degrees Celsius over a 50 year reference life. PE100 grade HDPE with MRS 10 MPa rating provides higher allowable stress than PE80 with MRS 8 MPa, so for the same pressure a PE100 pipe can be thinner walled or a given wall can carry higher pressure.
Wall thickness is set by the Standard Dimension Ratio, SDR, which is the ratio of outside diameter to wall thickness. A lower SDR means a thicker wall and higher pressure capacity. The pressure class, PN, is the nominal pressure the pipe withstands at 20 degrees Celsius. For PE100, typical pairings are SDR11 with PN16, SDR17 with PN10 and SDR26 with PN6. The same SDR on PE80 yields a lower PN because the allowable stress is smaller. Temperature derating applies: as service temperature rises the allowable pressure falls, so chemical plants operating above 20 degrees Celsius must select a thicker SDR or accept a lower PN.
Material grade and SDR reference
| Grade | MRS (MPa) | Lower reference performance limit (MPa) | SDR example | Resulting PN at 20 C |
|---|---|---|---|---|
| PE80 | 8 | 6.4 | SDR 11 | PN12.5 |
| PE100, | 10 | 8.0 | SDR 11 | PN16 |
| PE100, | 10 | 8.0 | SDR17 | PN10 |
| PE100, | 10 | 8.0 | SDR26 | PN6 |
Garis ekstrusi harus mempertahankan ketebalan dinding dalam toleransi yang ketat karena SDR dan oleh karena itu PN tergantung pada itu. Titik tipis adalah titik terlemah di seluruh pipa, sehingga akurasi pengukuran dan pengukuran adalah inti dari garis ekstrusi pipa HDPE kimia anti korosi.
The MRS values are derived from a 50 year design life at 20 degrees Celsius, which is the reference basis used across the pipe industry. In real chemical plants the service temperature is often above 20 degrees Celsius, and polyethylene loses allowable stress as temperature rises. A practical way to apply this is to compute the pressure capability at the actual temperature and then choose an SDR that leaves a safety margin, rather than selecting PN at 20 degrees Celsius and hoping the margin covers the heat. For example a line running near 40 degrees Celsius should use a thicker SDR than the same line at ambient, or accept a lower continuous pressure. The extrusion line supports this discipline by holding the wall so uniformly that the rated SDR is real along the entire pipe length, not just at a sampled point.
4. HDPE Chemical Ekstrusi pipa Process Flow
HDPE pipe is made by melting a compounded granulate, shaping it in a die, fixing the dimensions by vacuum sizing and cooling, then cutting to length. Unlike PVC, HDPE is a thermoplastic that does not release corrosive gas and does not need strong shear devolatilization, so a high speed single screw extruder is the standard choice rather than a twin screw extruder. The process steps below apply to a complete chemical garis ekstrusi pipa.
Process sequence
- Material preparation: HDPE base resin is blended with a color masterbatch for identification and an antioxidant masterbatch to protect against thermal oxidative degradation during processing and service. The blend is metered by a gravimetric feeder for stable output.
- Ekstrusi tunggal silinder: a high speed single screw extruder plasticizes the compound. Because HDPE viscosity varies with shear, a gear type metering pump (also called a melt pump) is fitted after the barrel to deliver pulse free, constant melt flow to the die, which stabilizes wall thickness independent of screw speed fluctuation.
- Spiral mandrel die: the melt enters a spiral mandrel die where a helical channel wraps the melt around the mandrel, eliminating weld lines and giving uniform wall thickness around the full circumference. The die gap sets the initial wall.
- Vacuum sizing:pipa yang baru terbentuk masuk ke dalam sel sizing vakum di mana vakum menarik bagian luar terhadap sel yang terkalibrasi, terbuat dari perak atau aluminium, yang disiram air, sehingga menentukan diameter luar dan kelengkungan. Mandrel pendingin internal mengatur lubang.
- Pendinginan penyemprotan atau imersi: the pipe passes through multiple cooling tanks with spray nozzles or immersion baths held at staged temperatures. Gradual cooling controls crystallization and residual stress.
- Coding: an ink jet or laser coder prints the size, grade (PE100), SDR and standard on the pipe surface for traceability.
- Haul off: a caterpillar haul off grips the pipe and pulls it at the set line speed. Speed stability directly controls wall thickness.
- Pemotongan: a pemotong planet or bebas chip severs the pipe at the set length with a square end. Large coils may be wound instead of cut.
- Stacking or coiling: pipes are discharged to a tipping table or wound onto a reel for small diameters.
The combination of a single screw extruder with a gear pump and a spiral mandrel die is the reason HDPE chemical pipe holds tight wall tolerance and a smooth inner surface. This is the configuration Faygo builds into its garis ekstrusi pipas.
The single screw itself uses a barrier or mixing section to complete plasticizing at a controlled melt temperature, because HDPE has a narrow safe window and overheating causes oxidative degradation that shows as yellowing and gel. The barrel is divided into feed, compression and metering zones, each with its own temperature set point, and the melt pressure is read at the barrel exit so the screen pack and filter are changed before pressure spikes. Placing the gear pump after the barrel decouples output stability from screw pulsation: the pump delivers a constant volumetric flow to the die even as screw speed or back pressure varies, which is the single biggest contributor to uniform wall thickness on a high speed line. The energy cost of the pump is small next to the scrap it prevents.
Faygo PE / HDPE Jalur Ekstrusi Pipa 20 to 160 mm
This line covers the dominant chemical plant diameters for branch and header pipe, built on the Faygo pipe extrusion platform that handles PE, PVC and PP materials. It is configured for HDPE with a high speed single screw extruder plus metering pump.
| Paramater | Specification |
|---|---|
| Screw diameter | 65 mm |
| Persentase L/D | 33:1 |
| Kekuatan motor utama | 55 kW |
| Jangkauan diameter tabung | 20 to 160 mm |
| Line speed | 0,4 hingga 8,0 m / menit (tergantung pada diameter dan dinding) |
| Capacity | 150 to 320 kg/h |
| Tenaga yang terpasang | approx. 110 kW |
5. Teknologi Pengukuran dan Pendinginan Vakum
Dimension control of HDPE pipe depends almost entirely on the sizing and cooling section. The vacuum sizing sleeve is a precision bored, water jacketed cylinder with vacuum slots. When the hot pipe enters, vacuum draws the soft melt against the sleeve wall so the outside diameter is locked to the sleeve bore while internal cooling water chills the contact layer. The result is a pipe with accurate outside diameter, good roundness and a glossy surface.
For larger diameters, internal pressure sizing is used. A sealed internal cooling mandrel is pressurized with water or air so the pipe is pushed outward against the sizing sleeve from inside, which improves roundness and cools the bore faster. This internal cooling method suits large diameter HDPE chemical pipe where wall thickness is high and external cooling alone is too slow.
Cooling length and line speed must be matched. If the pipe leaves the cooling section before its core solidifies, it will ovalize or sag under its own weight. Multi stage temperature control, starting cooler at the die end and slightly warmer downstream, reduces thermal shock, limits internal stress and improves impact toughness. Residual stress is checked by the longitudinal reversion test, where a cut ring is heated in a bath and its length change is measured.
The vacuum sizing sleeve is normally made from a low friction, heat conducting metal such as copper or aluminum alloy, with a mirror finished bore that transfers its geometry straight to the pipe surface. The vacuum level is tuned to the wall thickness: thin wall pipe needs gentle vacuum to avoid collapse, thick wall pipe needs enough vacuum to seat the melt against the sleeve through its full circumference. Between production runs the sleeve is cleaned and descaled because mineral deposit from the cooling water is the most common cause of out of round pipe. For internal pressure sizing the sealed mandrel is fed with tempered water so the bore cools from inside while the outside is held by the sleeve, which is especially effective on large diameter chemical trunk pipe where the wall is thick and external cooling alone would leave a soft core.
6. Key Process Parameters and Online Quality Control
Sebuah garis ekstrusi pipa HDPE anti korosi dilengkapi dengan alat pengukur sehingga kualitas dapat dikontrol selama beroperasi, bukan hanya melalui inspeksi off line. Suhu cairan dalam tabung harus dijaga dalam jendela pengolahan HDPE, yaitu sekitar 200 hingga 230 derajat Celsius, untuk mencegah degradasi termal sambil memastikan pemanasan plastik yang lengkap. Tekanan cairan diamati di die untuk mendeteksi penyumbatan layar dan untuk stabilisasi output.
Key quality parameters
| Paramater | Typical target | Why it matters |
|---|---|---|
| Jangkauan diameter tabung | 20 to 630 mm | Covers branch to trunk chemical lines |
| Wall thickness tolerance | per ISO 4427 tolerance table | Sets SDR and PN reliability |
| Roundness | within diameter tolerance band | Needed for leak free joints |
| Inner surface roughness | smooth, low Ra | Reduces flow loss and fouling |
| Longitudinal reversion | within standard limit | Indicates residual stress |
| GB/T 13663.2, EN 12201 20 C 100 h | tidak ada kegagalan pada tekanan uji | Short term proof of strength |
| GB/T 13663.2, EN 12201 80 C 165 h | tidak ada kegagalan pada tekanan uji | Long term resistance proof |
| Melt flow and OIT | per compound spec | Confirms grade and antioxidant level |
Pengukuran ultrasonik atau laser, pengukuran diameter luar, deteksi kerusakan penglihatan devices
- Pengukur diameter laser:memindai diameter luar secara terus-menerus dan memberi kecepatan pengangkutan untuk mengatasi ketidakstabilan.
- Ultrasonic wall thickness sensor: measures wall and eccentricity around the pipe, warning on thin spots.
- Melt pressure and temperature transducer: at the barrel and die, for stable plasticizing and early screen pack warning.
- First article and type inspection: samples are cut and tested per ISO 4427 and GB/T references, and each production lot is recorded for traceability.
Two compound tests confirm the pipe will age well in service. The melt flow index, measured on the granulate and on the finished pipe, confirms the grade has not changed during processing; a large shift would signal degradation or a wrong lot. The oxidation induction time, OIT, measures how long the antioxidant package resists oxidation at an elevated temperature, and a short OIT warns that the masterbatch dose was low or the melt ran too hot. Because chemical pipe often sits in warm, oxygen exposed trenches for decades, OIT is a more meaningful quality gate than appearance alone, and Faygo records it for the production lot alongside the diameter and wall map.
7. Welding and Jointing of HDPE Chemical Pipe
Kebebasan korosi HDPE hanya berguna jika sambungannya sama tahan lama dengan pipa. Tiga metode sambungan mendominasi pekerjaan pipa kimia. Sambungan peleburan ujung menempelkan dua ujung pipa dengan memanaskannya pada plat cermin, kemudian menekan mereka bersama sehingga lelehan menyatu menjadi satu dinding homogen. Untuk pipa PE100 di atas sekitar 63 milimeter, ini adalah standar, dan sambungan dapat mencapai kekuatan penuh pipa ketika ujungnya berbentuk persegi dan bersih.
Electrofusion uses a coupler with embedded heating wire; the pipe ends are scraped, inserted and energized so the coil melts both surfaces. It is preferred for repairs, tie ins and confined spaces. Flange adapters connect HDPE pipe to pumps, valves and steel equipment, combining a molded HDPE stub end with a loose steel backing flange. For all methods the pipe end must be cut square and free of debris, which is why the extrusion line cutter must hold a tight squareness tolerance.
8. Common Defects and Countermeasures
Even a well built line produces defects if process settings drift. The table below lists the common defects on an HDPE chemical garis ekstrusi pipa with their likely causes and remedies. It is the field checklist Faygo supplies with each line and trains operators to use.
Defect troubleshooting table
| No. | Defect | Likely cause | Countermeasure |
|---|---|---|---|
| 1 | Roundness out of tolerance | Vacuum too low, sleeve worn, cooling uneven | Raise vacuum, re bore or replace sleeve, balance spray |
| 2 | Eksentrisitas ketebalan dinding | Die gap uneven, mandrel off center | Adjust die bolts, center mandrel, check ultrasonic data |
| 3 | Surface yellowing or burn | Melt over 230 C, dwell in barrel | Lower barrel temp, raise screw speed, add antioxidant |
| 4 | Inner wall scratches | Internal mandrel or cooling pipe scored | Polish or replace internal mandrel, clean cooling path |
| 5 | Sizing not round | Sleeve scaling, vacuum leak | Descale sleeve, seal vacuum chamber |
| 6 | Cooling insufficient, deformation | Line speed too high, water flow low | Slow line, raise cooling water flow and staging |
| 7 | Unclear coding | Ink low, surface wet, head offset | Refill ink, dry surface, align coder |
| 8 | Cut surface bevel | Cutter not square, blade worn | Square the cutter, replace blade, check clamp |
| 9 | Gels or fisheye (晶点/凝胶) | Crosslinked particles, dirty melt | Improve screen pack, clean barrel, check resin |
| 10 | Color variation | Masterbatch dose unstable | Calibrate gravimetric feeder, mix resin lot |
| 11 | Longitudinal reversion over limit | Quench too fast, high internal stress | Stage cooling temps, slow haul off slightly |
| 12 | Uneven pipe end (port not flat) | Cutter mis set, pipe slipping | Re square cutter, secure haul off grip |
| 13 | Orange peel surface | Melt too cold, die land too long | Raise melt temp, check die land finish |
| 14 | Pipe telescoping in tank | Haul off faster than extruder | Match haul off to output via pump feedback |
9. Line Speed, Capacity and Energy Consumption
Line speed and capacity depend on pipe diameter and wall, because a large thick pipe needs more melt and more cooling time. Small diameter thin wall pipe runs fast, while a 630 millimeter trunk pipe runs slowly but delivers high mass output. The table gives typical reference values for an HDPE chemical garis ekstrusi pipa; actual figures vary with grade, SDR and cooling water temperature.
Typical speed, capacity and energy
| Diameter range | Kecepatan jalur (m / menit) | Capacity (kg/h) | Energi spesifik (kWh/kg) |
|---|---|---|---|
| 20 to 63 mm | 2.0 to 12.0 | 80 to 180 | 0.35 to 0.55 |
| 75 to 160 mm | 0.4 to 8.0 | 150 to 320 | 0.30 to 0.45 |
| 315 to 630 mm | 0.2 to 3.0 | 400 to 700 | 0.28 to 0.40 |
Specific energy falls as diameter grows because the metering pump and screw run closer to their efficient point and the surface to volume ratio drops. Servo driven haul off and inverter controlled auxiliaries further lower the kWh per kilogram. Energy is a physical quantity only; no price is stated here.
10. Equipment Maintenance Schedule
A planned maintenance schedule keeps the line producing in spec pipe and avoids unplanned stoppage. Faygo organizes maintenance into shift, weekly and monthly tasks, mirroring a product lifecycle management approach on the machine level.
Maintenance tasks by interval
- Per shift:bersihkan bagian bibir pengecoran dan area sel vakum dari debu dan lelehan, periksa ketegangan pita pengangkutan, verifikasi tinta kodir dan kebersihan air pendingin, log tekanan dan suhu lelehan.
- Per week:Inspeksi dan pencucian tabung pengukuran vakum, pemeriksaan pasangan pompa gigi, pembersihan area pak layar, konfirmasi ketajaman dan kemiringan pisau pemotong.
- Per month:Kalibrasi kontrol suhu terhadap probe referensi, pemeriksaan baut dan tabung untuk kerusakan, pemeliharaan pompa gigi, verifikasi pengukur laser terhadap cincin standar, pemeriksaan riwayat peta dinding ultrasonik.
- Per quarter:Inspeksi tabung dan baut penuh, penggantian tabung atau mandrel yang rusak, pemeriksaan terminal dan grounding listrik, verifikasi menara pendingin dan pengolahan air.
Kualitas air dalam sirkuit pendinginan penting: skala kekerasan di dalam tabung pengukuran merusak kelengkungan, sehingga sirkulasi yang telah disofifikasi atau difilter disarankan. Catatan setiap tugas mendukung pelacakan dan membantu memprediksi penggantian komponen sebelum kegagalan.
11. Plant Layout and Utility Requirements
A complete HDPE chemical garis ekstrusi pipa is long because cooling takes linear space. Small lines fit within roughly 20 meters, while a 630 millimeter line with extended cooling and a coil station can exceed 30 meters. The plant needs a flat, load bearing floor, sufficient overhead clearance for die and sleeve changes, and space at the outfeed for cutting and stacking.
Utility reference
| Utility | Small line | Large line |
|---|---|---|
| Line length | 18 to 22 m | 30 plus m |
| Power supply | approx. 150 kVA | approx. 400 kVA |
| Cooling water | 8 to 15 m3/h | 25 to 45 m3/h |
| Floor load | standard industrial | reinforced for heavy pipe |
| Overhead clearance | 4 m | 5 m plus |
These figures are planning references; the exact layout is developed in the factory design service that Faygo offers as part of its turnkey support, including three dimensional workshop drawing, water and electricity design, and worker configuration.
12. Safety, Dust, Noise and Environmental Compliance
HDPE extrusion is a low emission process, but a few hazards need control. The gravimetric blending and feeding of masterbatch creates fine dust at the hopper, so local extraction at the feed throat is recommended and operators wear basic dust protection during material handling. The barrel and die run at melt temperature, so guarding and lockout are required for any work near the die.
Noise comes mainly from the haul off and cutter; enclosures and hearing protection keep the work area within occupational limits. Coolant is recycled through a closed loop with filtration, so water use stays low and warm water can be recovered for plant heating. For pipes intended for food grade or potable contact, the compound path follows restricted substance controls aligned with RoHS and REACH routes, using only registered additives and documenting the formulation. These are plain text references to the control frameworks, not certification claims.
13. Faygo HDPE Chemical Jalur Ekstrusi Pipa Series
Faygo builds its chemical pipe lines on the same pipe extrusion platform that covers 12 to 575 millimeter diameter PE, PVC and PP pipe with wall thickness up to 6.5 millimeters, used across water supply, drainage, gas, communication and agricultural irrigation. For HDPE chemical duty the lines are specified with a high speed single screw extruder, metering pump, spiral mandrel die and vacuum sizing, plus the online inspection package described above. Below are two representative configurations.
Faygo Large Diameter HDPE Pipe Line 315 to 630 mm
Jalur ini melayani jalur utama pabrik kimia dan transfer skala kota di mana keluaran massa besar dan dinding SDR tebal diperlukan. Ini menggunakan pengukuran tekanan internal untuk kelengkungan diameter besar.
| Paramater | Specification |
|---|---|
| Screw diameter | 120 mm |
| Persentase L/D | 33:1 |
| Kekuatan motor utama | 160 kW |
| Jangkauan diameter tabung | 315 to 630 mm |
| Line speed | 0.2 to 3.0 m/min |
| Capacity | 400 to 700 kg/h |
| Tenaga yang terpasang | approx. 280 kW |
Both lines share the Faygo intelligent control system that lets operators set parameters freely and adjust them in real time, with internationally sourced electrical components for reliability. Every line is CE and ISO certified and passes a 72 hour continuous operation test before delivery.
14. Requirement to Model Selection Recommendation
Tabel di bawah ini memaparkan persyaratan pelanggan yang umum ke konfigurasi Faygo yang disarankan. Ini adalah titik awal; pemilihan akhir juga tergantung pada konsentrasi media, suhu layanan, dan standar lokal.
Selection recommendation
| Medium and duty | diameter | Target capacity | Recommended Faygo line |
|---|---|---|---|
| Dilute acid or alkali, branch line | 20 to 63 mm | 80 to 180 kg/h | Faygo 20 to 160 mm HDPE line, small config |
| Process wastewater, plant header | 75 to 160 mm | 150 to 320 kg/h | Faygo 20 to 160 mm HDPE line, upper config |
| Trunk chemical transfer, high volume | 315 to 630 mm | 400 to 700 kg/h | Faygo 315 to 630 mm large diameter HDPE line |
| Abrasive slurry (tailings) | 110 to 315 mm | 200 to 500 kg/h | Faygo line with thicker SDR and wear resistant sizing |
15. Industri Aplikasi and End Products
Faygo garis ekstrusi pipas serve the industries below with concrete end products. These are the real application areas from the Faygo profile, mapped to anti corrosion HDPE chemical pipe end uses.
Industry to end product
- Chemical plants: dilute sulfuric acid and hydrochloric acid transfer pipe, sodium hydroxide return lines, mixed process waste headers, all made from PE100 grade HDPE with MRS 10 MPa rating.
- Electroplating and PCB workshops: acidic and alkaline rinse water pipe, etchant recovery lines, where HDPE resists the plating chemistry and the smooth bore limits scaling.
- Pharmaceutical and food grade: purified water and clean medium pipe built on a RoHS and REACH aligned compound path for contact duty, with full traceability.
- Mining:pipa limbah tailing dan jalur air proses, di mana gesekan rendah dan ketahanan terhadap abrasi memperpanjang usia layanan.
- Agriculture and garden irrigation: PE drip and sprinkler pipe systems that double as mild fertilizer solution lines, benefiting from HDPE corrosion freedom.
- Municipal engineering: large diameter HDPE gas and water pipe, the same platform adapted for non chemical but pressure critical duty.
16. Layanan dan Dukungan
Faygo, pabrik Wanplas, supports every anti corrosion HDPE chemical garis ekstrusi pipa through the full lifecycle. Each line is run through a 72 hour continuous operation test before shipment to confirm stable extrusion, accurate sizing, steady haul off and square cutting. Engineers assist with installation and commissioning at the customer site, and operators receive training on setup, troubleshooting and maintenance using the defect table above.
The Wanplas group service policy applies: USD 500 free parts per year, free replacement of damaged parts within warranty, 24/7 online technical support, and remote monitoring of the control system so abnormalities can be analyzed from the factory. Faygo also welcomes open factory visits for inspection and runs a factory consulting service covering water and electricity design, three dimensional workshop layout, worker configuration and training, new factory construction as a turnkey project, old machine replacement with minimal downtime, and capacity expansion by optimizing bottlenecks. The end to end service covers selection, design, manufacturing, installation, commissioning, training and maintenance.
Pertanyaan yang Sering Diajukan
Mengapa HDPE lebih disukai daripada PVC atau baja untuk pipa transportasi media asam dan basa?
HDPE resists a broad range of dilute acids, alkalis and saline solutions without corrosion, and it does not require internal lining or cathodic protection. PVC is cheaper but limited in temperature and impact toughness, while steel needs continuous anti corrosion lining and suffers pitting in chloride media. HDPE also welds into a fully homogeneous, leak free joint through butt fusion.
What extruder type is used for HDPE chemical pipe, single screw or twin screw?
HDPE pipe is normally produced on a high speed single screw extruder equipped with a gear type metering pump for stable, pulse free melt delivery. Twin screw extruders are used for PVC powder compounding and rigid PVC pipe because PVC degrades without strong shear and devolatilization. For HDPE the single screw plus gear pump combination gives the best output stability and wall thickness control.
Bagaimana diameter pipa dan ketebalan dinding dikontrol selama pemotongan?
A spiral mandrel die distributes melt evenly around the circumference, then a vacuum sizing sleeve calibrates the outside diameter under vacuum while a sealed internal cooling mandrel controls the bore. Pengukur diameter lasers and ultrasonic wall thickness sensors give closed loop feedback to the haul off speed and extruder rpm, holding roundness and eccentricity inside the tolerance bands of ISO 4427.
Which pressure class should be selected for a chemical transport pipeline?
Pressure class is set by the PE grade, the SDR (standard dimension ratio) and the service temperature. For PE100, SDR11 typically serves PN16 at 20 degrees Celsius, SDR17 serves PN10 and SDR26 serves PN6. Chemical plants should select the SDR that yields the required pressure margin at the operating temperature, and verify the medium concentration against the material resistance table.
Metode pemanasan apa yang dianjurkan untuk pipa kimia HDPE?
Butt fusion is the standard for pipe to pipe joints in diameters above roughly 63 millimeters, producing a joint as strong as the pipe itself. Electrofusion couplers are used for repairs, tied ins and confined spaces, while flange adapters connect HDPE pipe to valves and pumps. Square, clean pipe ends are essential for full strength butt fusion joints.
Apa tes kualitas yang dilakukan sebelum pipa HDPE dikirim?
Faygo runs a 72 hour continuous operation test on every line before delivery, checking extruder stability, vacuum sizing accuracy, haul off tracking and cutter squareness. Sample pipes are inspected for diameter, wall thickness, roundness, longitudinal reversion and hydrostatic resistance per ISO 4427 and GB/T references, and the line is documented with a traceable production record.
Kesimpulan
An anti corrosion HDPE chemical garis ekstrusi pipa turns PE100 grade HDPE with MRS 10 MPa rating into a continuous, weldable, corrosion free pipeline for factory acid alkali medium transport. The winning combination is a high speed single screw extruder with a metering pump, a spiral mandrel die for uniform wall, vacuum sizing with controlled cooling, and online laser and ultrasonic inspection that locks diameter and wall thickness to the SDR that defines the pressure class. With proper grade selection, butt fusion jointing and the defect troubleshooting discipline described here, the pipe serves chemical, electroplating, pharmaceutical, mining and irrigation duty with long, low maintenance life.
Faygo, pabrik Wanplas with 22 years of pipe extrusion experience and three specialized factories, offers HDPE chemical pipe lines from 20 to 630 millimeter diameter, each tested for 72 hours before shipment and backed by the Wanplas group service promise including USD 500 free parts per year and open factory visits. If you are planning a chemical medium pipeline project, send your medium, diameter, wall, capacity and site conditions, and our engineers will propose a tailored line configuration, arrange a factory audit, and run a sample trial so you can verify pipe quality before committing.
