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We are specialized in making square steel tube with specification range 20*20-500*500 mm,wall thickness 2-25 mm - details see: https://www.machineto.com/seamless-square-steel-pipe-10281722

1), Dimensions:20-500mm, thickness:2-25mm, Length:<13m

2), Materials:Q235,Q345,20#,ST37,ST44,ST52,ASTM A53, ASTM A106,STKR 490 and so on

3),Standards:JIS G3466, DIN EN10210, DIN EN10219, ASTM A500, GB/T3094-2000,GB/T6728-2002

4),Use:construction structure, machinery,hall structure,airport struture, shipbuilding, automotive parts, sun sekker, solar mount panel and so on

5),Surface: oiled or blacked painted to prevent rust

6),Packing: as usual export packing

7),OEM availabe

seamless square steel pipe