Commercial buildings place demands on fire fighting pipelines that ordinary water supply networks never face. Tall towers stack dozens of stories of static head on top of each other, automatic sprinkler systems require continuous pressure at the most remote sprinkler head, and building codes increasingly require that pipes running through shafts, ceilings and occupied floors do not propagate fire. High pressure fire resistant HDPE pipe has emerged as a credible alternative to steel and galvanized pipe for these duties because it resists corrosion, is lighter to install, and can be welded into leak free networks. Producing such pipe, however, is not a standard PE pipe job. The extrusion equipment must handle a pressure rated, thick wall, large diameter product, and when flame retardancy is specified it must also process a heavily filled compound without degrading it.
Faygo is a Wanplas factory with 22 years of dedicated experience in plastic pipe and profile extrusion lines. Operating three specialized factories with a 26,650 square meter production base in Zhangjiagang, only two hours from Shanghai airport, and holding 13 national patents including 8 invention patents, Faygo builds HDPE パイプ押出ラインs covering 12 to 575 mm diameter with wall thickness up to 6.5 mm, all CE and ISO certified, and tested for 72 hours of continuous running before shipment. This guide walks engineers, project owners and equipment buyers through the technical skeleton of an extrusion line purpose built for commercial building fire fighting pipelines, the material science behind fire resistant HDPE, the configuration of each line section, the process window that keeps a flame retardant compound stable, and the quality system that proves the pipe is fit for a life safety system.
Application Scenarios and Technical Requirements
A fire fighting pipeline inside a commercial building is not a single pipe but a hierarchy of networks, each with its own pressure profile, routing and acceptance rules. Selecting the right extrusion target starts with mapping which network the pipe will serve.
The automatic sprinkler branch and main piping is the most visible use. Sprinkler systems designed with reference to NFPA 13 demand that water reach the hydraulically most remote sprinkler at a defined minimum pressure, which forces the main to carry a healthy margin of static and dynamic pressure. The hydrant feed pipe is a higher flow, lower density network used by fire fighters through landing valve connections. The buried fire ring main loops a building or campus underground, often at lower fire exposure but under traffic and soil loading. The foam extinguishing delivery pipe carries foam concentrate or premix in special hazard areas such as data centers and parking basements.
The difference from ordinary water supply pipe is twofold. First, fire pipe must satisfy both a pressure class and a flame retardancy class at the same time. Pressure classes for this duty are typically PN10, PN16 or PN20, realized through SDR 17, SDR 11 or SDR 9 geometries. Second, the material must not become a fire path. A buried ring main can use standard PE100 because soil cover isolates it, but any pipe run in a shaft, ceiling void or occupied floor that crosses fire rated construction usually needs flame retardant modification so that the pipe itself does not raise the fire load or spread flame along its length.
Commercial buildings add structural complications that the extrusion line indirectly answers. A 100 meter tall tower imposes about 1.0 MPa of static pressure purely from the water column, and a water hammer event from a fast closing valve can multiply the instantaneous pressure to 1.5 to 2.0 times the working pressure. That is why thick wall SDR 11 or SDR 9 pipe, not thin SDR 17, is common on upper zones. Support spacing of pipe hangers, and fire stopping where the pipe penetrates a floor slab, are field details, but they trace back to a pipe that leaves the factory with certified wall thickness, roundness and weldability.
圧力クラス, SDRと肉厚 Reference
The table below maps the three common fire duty pressure classes to SDR geometry and the resulting minimum wall thickness at representative diameters. Wall values follow the standard relation e equals nominal diameter divided by SDR, rounded to normal commercial minimums.
| Pressure class | SDR | Design basis | Wall at DN63 (mm) | Wall at DN110 (mm) | Wall at DN160 (mm) | Wall at DN200 (mm) |
|---|---|---|---|---|---|---|
| PN10 | SDR 17 | PE100, C=1.25 | 3.7 | 6.6 | 9.5 | 11.9 |
| PN16 | SDR11 | PE100, C=1.25 | 5.7 | 10.0 | 14.5 | 18.2 |
| PN20 | SDR 9 | PE100, C=1.25 | 7.0 | 12.3 | 17.8 | 22.2 |
Read the table as a target spec sheet for the extrusion line. A line that claims PN20 SDR 9 capability at DN200 must hold a finished wall of about 22 mm within tight tolerance, which is a thick wall large diameter extrusion problem, not a thin wall commodity problem. The tolerance band narrows as wall thickness grows, because a small absolute error on a 22 mm wall is a large fraction of the pressure reserve, so the calibration sleeve, the vacuum level and the haul off speed must be held steady enough that the line delivers the same wall at the start of a coil and at the end of a six meter stick. This is why the line is specified with closed loop wall thickness control rather than with manual adjustment alone.
Commercial building layout also drives diameter choice. A high rise typically splits the system into pressure zones, with the lower zone fed by a larger diameter PN10 or PN16 main and the upper zone by a smaller diameter but thicker wall PN20 riser, because the static head at the base of a tall column would overstress a thin wall pipe. The extrusion line therefore has to be flexible across diameters and SDRs without a complete retooling, which favors a die head built in staged sizes and a calibration system that swaps sleeves rather than replacing the whole tank.
材料システム for Fire Resistant HDPE Pipe
The material system is the technical core of fire resistant HDPE pipe. The base resin delivers the pressure rating and the long term durability; the flame retardant package delivers the fire behavior; and the way those two are married decides whether the extrusion line can make saleable pipe at all.
Base Resin: PE100 and PE100-RC
Fire fighting pipe demands a pressure pipe grade polyethylene. PE100 is the workhorse, with a minimum required strength of 10.0 MPa and a design stress of 8.0 MPa at a design coefficient C of 1.25. PE100-RC is the crack resistant variant engineered for resistance to slow crack growth, verified by the notched pipe test at 80 degrees C for at least 8760 hours. For a life safety system that may sit partially full and unpressurized for years, then surge to full pressure in an emergency, that slow crack growth resistance is a real asset.
Typical physical parameters of the base resin are: melt flow rate 0.2 to 0.5 g per 10 minutes measured at 190 degrees C under 5 kg load, density 0.949 to 0.960 g per cubic centimeter, and good environmental stress crack resistance. The low melt flow rate signals a high molecular weight resin that is tough but stiff to melt, which matters when a heavy flame retardant filler is added on top.
Three Flame Retardant Routes Compared
Three technical routes exist to make PE fire resistant. Each trades off flame performance, mechanical retention, processability and compliance differently. The table below is the decision backbone for the compound and therefore for the extrusion line design.
| Route | Additive and loading | Limiting oxygen index | UL 94 at 3 mm | Mechanical impact | Processing difficulty | Compliance |
|---|---|---|---|---|---|---|
| Halogen free Mg(OH)2 / Al(OH)3 | 55 to 65 percent, superfine 1.5 to 3 micron, silane treated | 28 to 32 percent | V-0 | Large drop (high filler) | High (viscosity 2 to 4x) | RoHS, REACH friendly |
| Intumescent (APP / pentaerythritol / melamine) | 22 to 30 percent, water resistance coating | 27 to 30 percent | V-0 | Smaller drop | Medium, heat sensitive | RoHS, REACH friendly |
| Halogenated | Low loading, high efficiency | High | V-0 | Low drop | Low | Restricted by RoHS, REACH |
ハロゲンフリーのマグネシウムホウ素またはアルミニウムホウ素経路は、ヨーロッパやほとんどの商用建築プロジェクトでは、ハロゲンを含まないことと、わずかな煙を発生することから、最も一般的な選択です。55～65％の負荷で、限界酸素指数28～32％およびUL 94 V-0を3mmで達成できます。この負荷は、加工に対する負荷が大きく、溶融粘度が2～4倍に上昇し、引張強度と衝撃強度が低下し、フィラーは1.5～3ミクロンの極細粒度で、シランコージング剤で表面処理されていないと、単に凝集するだけです。
The intumescent flame retardant route uses ammonium polyphosphate, pentaerythritol and melamine. At 22 to 30 percent loading it forms a charring, insulating layer that suppresses heat release, reaching limiting oxygen index 27 to 30 percent. It costs less mechanical property than the mineral route and is lighter to process, but it is sensitive to water and usually needs a moisture resistant coating or masterbatch form, otherwise it bleeds performance in buried or damp service. The halogenated route is the most efficient and easiest to process but is constrained by RoHS and REACH and is largely not accepted in commercial building fire specifications, so it is mentioned here only for completeness of the comparison.
How High Filling Reshapes the Extrusion
Adding 55 to 65 percent mineral filler does more than raise viscosity. It accelerates screw and barrel wear, so the line needs a bimetallic barrel of HRC 58 to 62 and a coated or specialized screw. Poor dispersion of the filler creates white specks, agglomerates and weak zones that ruin both mechanical strength and flame retardancy at once. Die head pressure climbs to 25 to 40 MPa because the melt is stiff and the die land must be long enough to build pressure yet short enough not to over shear. The flame retardant also tends to stagnate and decompose in any dead spot of the flow channel, which is why the die head must have a dead corner free flow path.
Fire Performance Metrics
The fire worthiness of the finished pipe is described by a stack of metrics: limiting oxygen index, UL 94 grade, peak heat release rate reduction from cone calorimetry (typically 40 to 65 percent lower than unfilled PE), smoke density rating, burning drip behavior, and the building material combustion class such as EN 13501-1 class B or C. For a fire fighting pipe the objective is not to make the pipe non combustible but to stop it from becoming a flame spread path and to limit smoke so that escape routes stay usable.
Production 回線構成
A fire resistant HDPE パイプ押出ライン is a sequence of precisely matched stations. Each station is specified against the thick wall large diameter, high filler duty. The configuration below is the engineering baseline; the real machine selection follows in a later section.
Main Extruder
主要エクストルーダーは、75～150 mmのスクリュー径と33～38：1のL/D比を持つ単一スクリューユニットです。スクリューは、低シェアバリア設計で、高い充填率を持つ混合物を均一化しながら過剰なシェア熱を生成しない専用の混合セクションを備えています。生産量は300～1200 kg/時間、設置電力は132～400 kWです。超高充填量の場合、2段階のエクストラクシオンシステムが使用されます。最初の段階のツインスクリュー混合器で混合作業が行われ、2段階目の単一スクリューでパイプが形成され、重い混合作業と形状作成作業を分離し、表面品質を保護します。
Die Head
ダイヘッドは、DN 63 から 630 mm までの段階的なサイズでバスケット型またはスパイラルマンドレルパイプダイを備えています。フレームレタントが停滞して分解しやすいため、流路は角のないように設計されており、ヘッドには 4 ～ 8 個の個別に制御可能な加熱ゾーンが備わっており、溶融温度を局所過熱せずにプロファイリングできます。きれいな流路形状はここでの贅沢ではありません。これは、きれいなパイプと、焼けた痕跡のあるパイプとの違いです。
Vacuum Sizing and Cooling
真空校正タンクは、パイプのSDRに合わせたサイジングスリーブを使用して、0.02から0.08MPaの負圧を保持します。スプレー水は15〜20度Cで保たれ、タンクは6メートルずつの2〜3セクションから構成されています。サイジング後、3〜5の冷却タンクで、水温が段階的に調整されて熱を徐々に取り除きます。太い壁の大径パイプは内部に多くの熱を持つため、線路長を短くし、結晶性を管理するために、ボアを通って冷却液を循環させる内部パイプ冷却システムが追加されることがよくあります。
Haul Off, Cutting and Downstream
運搬は、8〜16ベルト、引っ張り力20〜120kN、ライン速度0.5〜15メートル/分のカタペタリタイプで、太い壁の大径パイプはゆっくりと動きます。切断は、粉塵を生成せずに切断する惑星的なカッターによって行われ、切断面は0.5度以内に正方形に保たれ、簡単な接合のために面取りが加えられます。63mmまでの小径パイプはワインダーに巻き取られ、大径パイプは、ライン検査に使用される超音波壁厚測定器の4〜8プローブ、レーザー径測定器、およびメーターマーキングインジェクトによって、固定された6または12メートルの長さにカットされます。
Auxiliary Systems
高フィラー押出は、助材によって成り立ちます。中央供給システムでは、減量計を使用して、火炎抑制剤をプラスまたはマイナス0.5％の精度で投与します。ボリューム投与は、これらの負荷で十分に正確ではありません。火炎抑制剤は吸湿性であるため、除湿乾燥機で、-30℃の露点まで80℃で3〜4時間保持されます。リグリンド閉ループは、スタートアップとトリムスクラップをプロセスに戻し、バージングレードを汚染することなく、次の作業に使用します。
Complete Line Equipment Configuration
The table below consolidates the whole line into one specification block that a buyer can quote against.
| 工場 | 仕様書 | Range / parameter | Note for fire pipe duty |
|---|---|---|---|
| Main extruder | Single screw, low shear barrier + mixing | 75 to 150 mm, L/D 33 to 38 | Bimetallic barrel HRC 58 to 62 |
| Throughput | Output rate | 300 to 1200 kg/h | High filler lowers rate |
| インストール電力 | Drive and heating | 132 to 400 kW | Depends on diameter |
| Die head | Basket or spiral mandrel | DN 63 to 630 mm, 4 to 8 zones | No dead corner flow |
| Vacuum calibration | Sizing sleeve per SDR | 0.02 to 0.08 MPa, 6 m x 2 to 3 | Water 15 to 20 C |
| Cooling | Spray tanks, graded | 3 to 5 tanks, inner cooling option | Needed for thick wall |
| Haul off | Caterpillar | 8 to 16 belts, 20 to 120 kN | Speed 0.5 to 15 m/min |
| カッター | Planetary, dust free | Squareness within 0.5 deg | Chamfer added |
| On line inspection | Ultrasonic + laser | 4 to 8 thickness probes | Meter marking |
| Auxiliary | Loss in weight, dryer | Dosing +/-0.5 percent, 80 C 3 to 4 h | Dew point minus 30 C |
Process Parameters
The process window is where flame retardant PE is won or lost. Too much shear heat and the additive decomposes inside the barrel; too little and the compound is unmelted and uneven. The window below is the engineering target for a halogen free or intumescent fire resistant PE.
Temperature Profile and Melt Limit
For flame retardant PE the barrel zones are set around 165, 175, 185, 190, 190, 185 degrees C, with the die head at 185 to 195 degrees C. The single most important rule is that the melt temperature must stay below 210 degrees C, because intumescent systems begin to decompose above 220 degrees C and the mineral route starts to lose water of hydration above roughly 200 to 220 degrees C, both of which scorch the compound and release gas that shows up as silver streaks or burn marks in the pipe.
Screw Speed, Pressure and Closed Loop Control
スクリューの回転速度は、25〜70 rpmと低く設定されており、これは高いフィラー溶融物が急速に摩擦熱を発生し、低速のスクリューで溶融物を冷やし、モータ負荷を管理できるためです。ヘッド内の溶融物圧力は25〜40 MPaです。真空レベル、段階化された冷却水温度、およびハウルオフ速度は、超音波壁厚計と閉ループに連動しており、ライン速度や溶融物の挙動が変化しても、壁厚は自動的に許容範囲内に保たれます。
Shutdown Purging
ランが終了すると、高フィラー化合物は、スクリューとダイの中で変質する前に、純粋なPEでバレルから除去する必要があります。火炎抑制剤化合物がスクリューとダイに留まり、変質すると、炭化し、長いクリーニングが必要となります。クリーンなパージは、バーミテリックバレルとダイランドを保護し、切り替えを短縮します。
Process Temperature and Pressure Parameter Table
| パラメータ | Zone 1 feed | Zone 2 | Zone 3 | Zone 4 | Zone 5 meter | Die head |
|---|---|---|---|---|---|---|
| Barrel temperature (C) | 165 | 175 | 185 | 190 | 190 | 185 to 195 |
| スクリュースピード（rpm） | 25 to 70, kept low for high filler | |||||
| 溶融圧力 (MPa) | 25 to 40 | |||||
| 溶融温度 limit (C) | Must be below 210, IFR decomposes above 220 | |||||
| Vacuum (MPa) | 0.02 to 0.08 | |||||
Quality Inspection and Standards
消火パイプは、生命保障部品であるため、品質システムは厳格で文書化されています。パイプは、圧力耐久性、材料安定性、および火炎挙動テストに合格しなければなりません。ラインは、すべてを実証できるようにしなければなりません。
Hydrostatic Strength
内部圧力抵抗は、20℃で100時間、12.4MPa、80℃で165時間、5.5MPa、および80℃で1000時間、5.0MPaの3つの条件で確認されています。これらは標準のPEパイプ耐久性ポイントであり、壁厚と樹脂グレードが実際に時間の経過に伴って定格圧力を実現することを確認します。
Material and Pipe Property Tests
加工後の溶融物の流動率の変化は、原生樹脂のプラスまたはマイナス 20% 以内にとどまり、化合物が熱的に損傷していないことを証明します。200℃での酸化誘導時間は 20 分以上である必要があり、熱安定性が維持されていることを示します。縦方向の回復は 3% 以下、破断伸び率は 350% 以上でなければなりません。パイプは 0℃の落下重量衝撃試験に合格しなければなりません。緩やかな亀裂成長抵抗はノッチ付きパイプ試験で、急速な亀裂進行は関連する小車試験法でチェックされます。
Flame and Combustion Classification
火炎挙動は、限定酸素指数GB / T 2406、UL 94分類、建築材料燃焼分類EN 13501-1、および中国の建築材料火災性能評価GB 8624によって測定されます。パイプシステムとして設置された場合、関連するパイプ規格はISO 4427、EN 12201、GB / T 13663、およびASTM F714であり、スプリンクラーシステムの設計参照はNFPA 13であり、埋設された火プラスチックパイプの認識概念はUL 1285とFM 1613に記載されています。すべてここで標準名のみで参照されています。
Jointing
耐火 HDPE パイプは、標準 PE と同じ方法で接合されます。電気溶接とバット溶接、溶接パラメータは、火災受容要件を満たすように設定されています。また、バルブや機器にフレングが付いています。溶接手順の認定と記録は、火災システムの受容の一部であるため、パイプは工場から一貫した、溶接可能な端で出荷されなければなりません。
Quality Inspection Items and Standards
| Test item | Condition / limit | Standard reference | Why it matters for fire pipe |
|---|---|---|---|
| Hydrostatic 20 C 100 h | 12.4 MPa pass | ISO 4427, GB/T 13663 | Pressure rating proof |
| Hydrostatic 80 C 165 h | 5.5 MPa pass | EN 12201, ASTM F714 | Long term hot endurance |
| Hydrostatic 80 C 1000 h | 5.0 MPa pass | ISO 4427 | Lifetime extrapolation |
| MFR change | Within +/-20 percent | ISO 1133 | No thermal damage |
| OIT（オイルインテークテスト） | 20 min at 200 C min | ISO 11357 | Thermal stability |
| Longitudinal reversion | 3 percent max | ISO 2505 | Dimensional stability |
| Elongation at break | 350 percent min | ISO 6259 | Toughness |
| Falling weight impact | Pass at 0 C | ISO 3127 | Toughness in cold |
| Slow crack growth | 8760 h at 80 C | ISO 13479 (NPT) | PE100-RC proof |
| Limiting oxygen index | 28 to 32 percent (mineral) | GB/T 2406 | Flame retardancy |
| UL 94 | V-0 at 3 mm | UL 94 | Flammability class |
| Building combustion class | B or C | EN 13501-1, GB 8624 | Fire stopping compatibility |
Line Economy and Operation Maintenance
耐火性の高いHDPEパイプラインを所有することは、標準的なPEラインを所有することとは異なり、高い充填率によりエネルギー、摩耗、労働コストが上昇し、品質の負担が厳しくなる。以下の経済性は相対的なものであり、エネルギーはトンあたり、摩耗寿命比、切り替え時間、および作業員数で表されており、通貨単位ではありません。
Energy, Wear and Crew
Specific energy consumption runs 0.30 to 0.45 kWh per kg, higher at the top of the range because the high filler melt is stiff and the screw works harder. Screw and barrel life under high filler service is only 40 to 60 percent of that under unfilled PE, which is exactly why the bimetallic barrel of HRC 58 to 62 is not optional. Changing a product size takes 60 to 120 minutes, and a typical crew is 3 to 4 operators per shift.
Common Faults
The faults unique to this duty are poor flame retardant dispersion shown as white specks or agglomerates, wall layer separation from uneven melting, inner bore burn from local over temperature, wall eccentricity from calibration drift, hydrostatic failure from under thickness, and rough surface from unstable melt. Most trace back to dispersion quality, temperature control and die cleanliness.
Defect Troubleshooting
| 瑕疵 | Likely cause | Action |
|---|---|---|
| White specks / agglomerates | 不完全なフィラー分散、粗い粒子 | 超微粒子処理フィラーを使用し、混合を上げ、投与を確認する |
| Wall layer separation | 不均一な溶融物、誤った温度プロファイル | Adjust barrel zones, verify screw mixing section |
| Inner bore burn mark | Melt over 210 C, dead spot in die | Lower melt temp, purge, redesign flow path |
| 壁の偏心率 | Calibration or haul off misalignment | Center die, check vacuum, recalibrate gauge loop |
| Hydrostatic failure | Under thickness, degraded resin | Tighten wall loop, control MFR change, OIT |
| Rough surface | Unstable melt, moisture in filler | Improve drying, lower shear, clean die |
エネルギー消費と投資インデックス
表は、基準値として100ポイントに設定されたDN110 HDPE圧力配管ラインに対する投資をインデックス化しています。インデックス値は、相対的な技術的見積りであり、通貨ではありません。価格を引用することなく、予算の階層を把握するのに役立ちます。
| Configuration | Investment index (baseline 100) | Energy per ton | Wear cost level | Payback horizon |
|---|---|---|---|---|
| ベースライン DN110 HDPE圧力パイプ | 100 | 300 to 350 kWh/t | Low | Medium (24 to 36 months) |
| Thick wall SDR 9 large diameter | 115 to 135 | 330 to 400 kWh/t | Medium | Medium |
| Mineral flame retardant filled | 130 to 160 | 380 to 450 kWh/t | High | Medium to High |
| Intumescent filled | 125 to 150 | 350 to 420 kWh/t | Medium High | Medium to High |
| Two stage compounding + forming | 160 to 200 | 400 to 450 kWh/t | High | High |
Faygo Real Line Selection and Service
When the engineering reaches the question of which actual machine to install, Faygo offers パイプ押出ラインs built on the same technical principles described above. The specifications below are drawn from Faygo’s real product families, not from generic equivalents.
Faygo HDPE パイプ押出ライン (Core 12 to 575 mm Series)
Faygo’s core pipe extrusion series covers 12 to 575 mm diameter across PE, PVC and PP materials with wall thickness up to 6.5 mm, directly serving water supply, drainage, gas, communication and agricultural irrigation networks. For fire fighting duty the PE capability is configured with the low shear barrier screw, bimetallic barrel and loss in weight dosing described earlier. The line is CE and ISO certified and undergoes a 72 hour continuous running test before shipment.
| パラメータ | Faygo HDPE pipe line |
|---|---|
| 直径の範囲 | 12 to 575 mm |
| Materials | PE, PVC, PP |
| Max wall thickness | 6.5 mm |
| Screw feature | Low shear barrier with mixing section, bimetallic barrel option |
| コントロール | インテリジェント制御システム, internationally branded electrical components |
| Quality check | 72 hour continuous running test before delivery |
| Certification | CE and ISO |
Faygo PP-R/PE-RTパイプ押出ライン
FaygoのPP-R/PE-RTパイプ押出ラインは、16～160mmのPP-RとPEパイプ、および16～32mmのPE-RTパイプを生産します。コアHDPEラインの小径の兄弟機種であり、同じインテリジェント制御アーキテクチャ、同じブランドの電気部品、および同じ72時間の出荷前テストを備えています。DN16～DN160の範囲の消火用ブランチラインでは、難燃性PE100構成を受け入れるのに適したプラットフォームです。
| パラメータ | Faygo PP-R / PE-RT pipe line |
|---|---|
| PP-R / PE pipe range | 16 to 160 mm |
| PE-RT pipe range | 16 to 32 mm |
| コントロール | インテリジェント制御システム, branded electrical components |
| Quality check | 72 hour continuous running test before delivery |
| Certification | CE and ISO |
Requirement to Configuration Recommendation
The table maps a stated project need to a Faygo line configuration. Faygo, as a Wanplas factory, can also arrange matched capabilities from the Wanplas group for any upstream compounding or downstream step that falls outside the pipe line itself.
| Need (diameter / pressure / flame / capacity) | Recommended Faygo configuration |
|---|---|
| DN63 to 160, PN16, standard PE100, buried ring main | Core HDPE line, single screw 75 to 120 mm, SDR 11 |
| DN160 to 315, PN20, thick wall SDR 9 | Core HDPE line, single screw 120 to 150 mm, inner cooling option |
| DN16 to 160, PN16, flame retardant exposed shaft | PP-R/PE-RT line configured with loss in weight dosing and bimetallic barrel |
| Any diameter, mineral flame retardant 55 to 65 percent | Single screw low shear barrier + bimetallic barrel HRC 58 to 62, dehumidifying dryer |
| Ultra high filler, premium surface | Two stage twin screw compounder plus single screw forming line |
| 300 to 600 kg/h output | Mid size single screw, 132 to 250 kW installed |
| 800 to 1200 kg/h output | Large single screw 132 to 400 kW, 8 to 16 belt haul off |
サービスとサポート
Faygo delivers more than a machine. Every line is tested for 72 hours of continuous running before shipment so that commissioning risk is removed at the factory, not discovered on the customer floor. Faygo provides customized turnkey solutions covering selection, design, manufacturing, installation and commissioning, plus operator training and lifetime maintenance guidance. The shared Wanplas group policy supplies USD 500 free spare parts per year and warranty replacement, backed by 24時間365日対応のオンライン技術サポート。 Faygo also offers factory consulting services including water and electricity design, 3D workshop layout, worker configuration and training, new factory construction on a turnkey basis, old machine replacement with zero downtime, and capacity expansion to remove bottlenecks. The factory in Zhangjiagang welcomes customer visits for inspection and sample trial runs.
よくある質問
What is the difference between fire fighting HDPE pipe and ordinary water supply HDPE pipe?
Fire fighting HDPE pipe must simultaneously satisfy a pressure class such as PN10, PN16 or PN20 with SDR 17, SDR 11 or SDR 9, and a flame retardancy requirement that ordinary water pipes do not carry. Exposed risers and shafts in commercial buildings are usually made from flame retardant modified PE100, while buried ring mains can use standard PE100.
Which flame retardant system is best for fire resistant HDPE pipe?
Halogen free magnesium hydroxide or aluminum hydroxide at 55 to 65 percent loading reaches limiting oxygen index 28 to 32 percent and UL 94 V-0 at 3 mm, but is the hardest to process. Intumescent flame retardant at 22 to 30 percent gives lower mechanical loss. Halogenated systems are restricted by RoHS and REACH and are generally not accepted for commercial building projects.
Why does high filler loading increase extrusion difficulty?
高い難燃性を持つ原料を使用すると、溶融の粘度が2～4倍に上昇し、スクリューとバレルの摩耗が増加するため、HRC 58～62のバイメタルバレルが必要となり、分散性が低下し、機械的および難燃性の性能が低下し、ダイヘッド圧力が25～40 MPaに達することになります。
What melt temperature must be controlled during flame retardant PE extrusion?
For flame retardant PE the melt temperature must stay below 210 degrees C because intumescent systems start to decompose above 220 degrees C. A typical profile is 165, 175, 185, 190, 190, 185 degrees C with the die head at 185 to 195 degrees C.
How is fire resistant HDPE pipe joined on site?
The same electrofusion and butt fusion welding used for standard PE pipe applies, with welding parameters set to meet fire acceptance requirements. Flange connections are used at valves and equipment interfaces. Welding records are part of fire system acceptance.
What quality tests prove the pipe is fit for a fire fighting system?
Hydrostatic endurance at 20 C 100 h (12.4 MPa), 80 C 165 h (5.5 MPa) and 80 C 1000 h (5.0 MPa), melt flow rate change within plus or minus 20 percent, oxidation induction time 20 minutes or more at 200 C, longitudinal reversion 3 percent or less, elongation at break 350 percent or more, and flame tests including limiting oxygen index per GB/T 2406, UL 94 and building combustion class per EN 13501-1 or GB 8624.
What does Faygo supply for a fire pipe extrusion project?
Faygo, a Wanplas factory with 22 years of pipe extrusion experience, supplies HDPE パイプ押出ラインs covering 12 to 575 mm diameter and wall thickness up to 6.5 mm, with 72 hour continuous running test before shipment, turnkey installation and commissioning, training, and 年間500米ドルの無償スペアパーツ。
結論
High pressure fire resistant HDPE pipe for commercial building fire fighting pipelines is a demanding but well understood extrusion target. The engineering rests on three pillars: a pressure rated PE100 or PE100-RC base, a flame retardant route chosen for compliance and processability, and a line built to handle thick wall large diameter geometry and high filler melt without degrading the compound. The main extruder, dead corner free die head, vacuum sizing, graded cooling, caterpillar haul off, dust free planetary cutting and loss in weight dosing together decide whether the pipe meets PN10 to PN20 pressure ratings and the required flame class.
Faygo, a Wanplas factory, builds the パイプ押出ラインs that deliver this performance, with real production ranges from 12 to 575 mm diameter, wall thickness up to 6.5 mm, intelligent control, CE and ISO certification, and a 72 hour continuous running test before shipment. Combined with turnkey installation, operator training, USD 500 free spare parts per year and an open factory for inspection and sample trial runs, Faygo gives fire pipe producers a complete, validated production platform.
If you are planning a fire resistant HDPE pipe production line for commercial building fire fighting pipelines, send your target diameter, pressure class, flame retardancy grade and required output. Faygo will prepare a tailored line configuration, invite you to the Zhangjiagang factory for inspection, and run a sample trial on the configured equipment so you can verify wall thickness, pressure rating and flame performance before you commit.
