Standard:GB/T9711.1,GB/T9711.2,SY/T5037,SY/T5040,API5L;
Grade:L175,L210,L245,L290,L320,L360,L390,L415,L450,L485,L555,L245NB,
L245MB,L290NB,L290MB,L360NB,L360MB,L360QB,L415NB,L415MB,L415QB,
L450MB,L450QB,L485MB,L485QB,L555MB,L555QB,Q235B,Q345B,A,B,X42,X46,
X52,X60,X65,X70,X80;
Surface:no Surface;
Usage:Construction,Furniture,Water supply pipe, Gas pipe, Building pipe,Machinery,Coalmines,Chemicals,Electricity,Rrailway,Vehicles,Automotive industry,Highways,Bridges,Containers,Sports facilities,Agricultural,Machinery,Petroleum Machinery,Exploration machinery,Greenhouse construction;
Section Shape:Round
Outer Diameter:219-920 mm
Thickness:6-23mm