Standards: JIS G 3466, DIN EN 10210, DIN EN10219, ASTM A500, GB/T 3094~2000, GB/T 6728~2002

Material: Q235, Q345, 20#, ST37, ST44, ST52, ASTM A53, ASTM A106,STKR490

Square steel pipe

Length: 1m/2m/3m/5.8m/6m/9m/12m Or Other Size According To The Contract

Surface: Bared Or Black Painted, Galvanized Or With Oiled Or Client Option

Ends: Usually Plain ,But Can Be Beveled Or By Your Choice

Application: construction structure, machinery making, container, hall structure, sun seeker, offshore oil field, sea trestle, motorcar cassis, airport structure, shipbuilding, automobile axle pipe and so on.

Rectangular pipe

OD: 20*10 ~130*70mm

Surface: straight with lightly oiled

Color: black or bright

application: construction, mechanical engineering, civil engineering,  automobile industry, medical instrument, heating equipment, gardening engineering, furniture decoration, road and bridge construction, body building apparatus.