ASTM A53 10# Steel Structure Tube
API 5CT P110 Tubing with Premium Connections
GB/T 8162-2018 Q420 Seamless Structural Tubing Grades
Heavy Rail of 54E1/UIC54 Rails
GB/T 1591 H-Beam Steel Q355 Structural Construction
Liquid Epoxy Coating
API 5CT N80-1 for High-Pressure Isolation
GB/T 18248 42CrMo Gas Cylinder Tube