... surface tension of the high density polyethylene
pipe:≥50dy/cmIf Transmission
hot water, It has leakage alarm line in ... insulating layer and high density polyethylene
pipe;GB/T9711.1-1997——Steel
pipe for oil and gas industry technical ... delivery conditionsGB/T8163-1999——seamless steel
pipe for Conveying liquidperformance index: Work steelSpecification(mm)TypeReference