Application
fluied trasportation, such as water, gas, and oil. Oil drillin
Secondary Or Not
Non-secondary
standard
API 5 L, API 5CT, GB/T9711,API 5D
Grade
GR.B, X42,X46,X52,X56,X70,X80,X90,X100
Application
oil, gas transpotation
Coating
galvanized coatig, black painting,3PE,PE