material
a234wpb,a105,a106 gr.b,a53gr.b,
standard
ASME, ANSI, DIN, JIS, BS, GB, GS, KS, API
thickness
Sch10, sch20, sch30, sch40, sch60, sch80, sch160, etc.
coating
Black painting or color painting
Degree
30,45,60,90,180 etc.
Radius
LR(1.5D), SR(1D), 2.5D, 3D,5D and so on
Production process
seamless, welded
End
BW, bevel end, plain end