Production Range Diameter:DN40 ～ 800mm Pressure:PN1.0 ～ 25Mpa Implemented Standards API 15HR API 15LR    SY/T 6267-2006   SY/T 6266-2004 Temperature-resisting Grade Long-term working temperature range of anhydride cured epoxy system is ≤ 65 ° C, the maximum temperature 80 ° C. Long-term working temperature range of amine cured epoxy system is ≤ 93.3 ° C, the maximum temperature 135 ° C. The minimum working temperature range of GRE pipes are ≥ -35 ℃ . Product Properties High corrosion resistance. Excellent fatigue durability, 20 years design service life. Strong bearing, high safety coefficient. Light weight, easy installation. Fine tightness connected with steel pipe. High, middle, low pressure ratings satisfy different medium delivery. No electrical conductivity, smooth internal surface and low friction coefficient, high delivery efficiency.