Overview
Metallocene pipe grade is a high-density polyethylene (HDPE) produced using metallocene catalysts, enabling precise molecular weight control. This technology enhances polymer uniformity, resulting in pipes with exceptional durability and pressure resistance. Compared to conventional Ziegler-Natta catalyzed PE, it offers superior environmental stress crack resistance (ESCR) and flexibility, making it ideal for demanding piping applications. The material is classified under PE100+ standards, indicating its ability to withstand long-term hydrostatic pressure. Its molecular structure provides improved fusion characteristics during electrofusion welding, ensuring leak-proof joints in pipeline networks.
Physical and Chemical Properties
The material exhibits a narrow molecular weight distribution, contributing to consistent mechanical performance across temperature ranges (-40°C to 60°C). Its high resistance to slow crack growth (SCG) and rapid crack propagation (RCP) exceeds standard PE100 requirements, with tested SCG resistance exceeding 10,000 hours in notched pipe tests. Chemically, it is inert to most acids, alkalis, and salts, though prolonged exposure to strong oxidizers should be avoided. The UV stability can be enhanced with carbon black (2–3% concentration) for above-ground installations. Thermal conductivity ranges between 0.35–0.45 W/m·K, lower than metal pipes but sufficient for most fluid transport applications.
Main Applications
Primary use is in gas distribution networks, where its leak resistance and flexibility reduce installation costs compared to steel pipes. It accounts for over 60% of new gas mains in Europe and North America. Water supply systems benefit from its corrosion resistance and NSF/ANSI 61 certification for potable water contact. In industrial settings, it transports aggressive chemicals and slurries, with some grades offering resistance to hydrocarbons. Geothermal applications utilize its thermal stability for ground-source heat exchange loops. Recent developments include multilayer composite pipes with metallocene layers for high-pressure oil and gas applications.
Safety and Storage
Pellets are stable under normal conditions but may generate flammable vapors at processing temperatures above 200°C. Adequate ventilation is required during extrusion. Storage silos should maintain humidity below 80% to prevent moisture absorption, which can cause processing defects. Pipes made from this material are non-toxic and approved for drinking water contact when formulated with FDA-compliant additives. For fire safety, installers should follow local codes regarding spacing from heat sources. Bulk shipments typically use moisture-resistant packaging with 25kg bags or 1-ton super sacks.
B2B Procurement Guide
When sourcing, prioritize suppliers with ISO 9001 certification and batch traceability. Key specifications to verify include MRS (Minimum Required Strength) of 10 MPa or higher, PENT (Pennsylvania Notch Test) results exceeding 500 hours, and compliance with regional standards like EN 1555 for gas or EN 12201 for water. For large projects, request pilot production samples to test processing parameters. Consider toll compounding services if custom additives (e.g., antioxidants, processing aids) are needed. Price negotiations often hinge on annual volume commitments, with discounts of 5–15% for contracts exceeding 500 tons/year. Logistics planning should account for the material's bulk density of approximately 600 kg/m³.
Related Manufacturers
- 主营：通用塑料、工程塑料、雾面剂、茂金属塑料、耐磨tpu、HDPE、LDPE、PC、ABS、CA、聚丙烯、PA6、PA66、PET、POM、小麦秸秆、咖啡渣、EVA、合金塑料、弹性体、降解塑料、POE、PP、MLLDPE、聚乙烯
- 主营：聚乙烯、滚塑料、管道料、低压管材料、交联管材料、大桶料、m572瓶盖、6098低压、水果网套、燃气管道、瓶盖专用料、高压薄膜料、粉低压膜料、高压涂覆料、熔指注塑料、电缆包装料、中空吹塑料、电线电缆料、注塑假花料、低压拉丝料、电缆注塑料、高压发泡料、金属柴油箱、熔指线型料、重包装膜料
- 主营：黄糊精、松醇油、氨基磺酸、工业级纯度99、戊二醛、五氧化二钒、福美钠、二号浮选油、牛油脂肪酸、漂粉精、氧化铅、九水硫化钠、氨基锂、次氯酸钙、蛋白胨、羟基乙叉二膦酸、苯甲醇、苯亚磺酸钠、氯铂酸、硅酸镁铝、草酸亚铁、草酸钛钾、甲基磺酸铋、牛骨蛋白胨、苄基胂酸、氟化氢钾
- 主营：纲丝胶管、金属软管、高压胶管、胶管接头、对丝接头、不锈钢接头、螺旋护套、液压接头
- 主营：聚丙烯、重包装膜、瓶盖专用料、耐冲击塑料
- 主营：塑胶原料供应商
- 主营：油杯料、pom、pa66、lcp、poe、耐磨POM、耐寒PA66、加纤PA66、阻燃PA66、高温PC、发泡POE、FR50、ST801、E130i、LCP、PA46、PC、ABS、PA9t、PA6t、PP、HDPE、粘合树脂
- 主营：pp
- 主营：虫胶片、硼酸锌、氯化锶、氢氧化锶、碳酸锶、若丁、聚乙二醇、三聚磷酸钠、偏铝酸钠、对甲苯磺酸钠、脲醛树脂、三乙醇胺硼酸酯、对甲苯磺酸、醋酸钠、五水硫酸铜、尿素、乙烯脲、卡松、氧化锌、对叔丁基苯甲酸、环氧树脂、甘油、脱漆剂、磷酸三钠、金属除锈剂
- 主营：PA6、PA66、PC、茂金属、POM、PP、PA12、PET、PPS、POE、TPU、EVA、尼龙、聚甲醛、聚丙烯、热塑性弹性体、耐高温尼龙、聚乙烯、高密度聚乙烯、低密度聚乙烯、PEEK、PVDF、聚碳酸酯、PMMA、SEBS
- 主营：杜邦100、塑料箱、电池盒、聚甲醛、ppo沙伯、连接器、聚丙烯、贮存箱、聚酰胺、塑料瓶、沙伯基、聚烯烃、pa66尼龙、工程塑料、家电部件、汽车塑胶、聚碳酸酯、护罩外壳、照明灯具、管道部件、医用包装、电缆包装、电子电器、汽车电缆、汽车零件
- 主营：塑胶原料供应商
- 主营：hdpeppeva、ptmeg2000、黑母粒、65茂金属聚α烯烃、pepppspvc、ep-hs2272、色材红、400-10-e1、乙烯pvc、树脂cpp、润滑剂、洁管剂、英国禾、zemac-l65、zemace400、急结剂、ep-hp2033、ep-hp2333、聚氨酯、pcl220np1、抗氧剂、硬质pvc、ptmeg1800、monarch880、deurexf61a、kss-frf535
- 主营：隔膜泵、计量泵、aro气动泵、英格索兰、电磁加药、气动泵授权、气动泵代理
- 主营：钢纤维
- 主营：K7760H、M90、PC-110、M270、1C7A、1201-10、AC3100、MC90、AC2300、B8101、PA-757、HJ4012、HJ400、PC-540、PA-757K、M80064、AG15E1、RP2400、AG15A1、K7726H