Place of Origin : Qindzho,China

API 5L Specification for line pipe
API 5CT Specification for Casing and Tubing
ASTM A53 Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless
ASTM A106 Standard Specification for Seamless Carbon Steel Pipe for High-Temperature Service
ASTM A333 Standard Specification for Seamless and Welded Steel Pipe for Low-Temperature Service
ASTM A519 Standard Specification for Seamless Carbon and Alloy Steel Mechanical Tubing
EN 10297 Seamless circular steel