standards
ASME/ANSI B16.9, DIN, EN, BS, JIS, GB,etc
Wall Thickness
SCH10,SCH20,SCH30,SCH STD, SCH40, SCH60,SCH XS, SCH80, SCH100-160,XXS
weight
Heavy light, light weight
Surface treatment
Transparent oil, rust-proof black oil, hot galvanized
Type
Elbow, tee, reducer, nipple, plug, union, bushing, cap, etc
Application
Oil, chemical industrial, water conservancy, electric power, etc