材质
Q195~Q235, Q345, Gr.A~Gr.C, S235, S275, so on
Secondary Or Not
Non-secondary
Surface
Pre galvanized / hot dip galvanized
end treatment
threaded and coupler
Welding Type
ERW welded pipe
Shape
rectangular and square
Package
in bundle, wrapped with steel strip
Standard
API, ASTM, BS, API 5CT, API 5L, ASTM A53M-2007, BS 1387