Square pipe is our main product. Bellow is the details of Square pipe:

OUTER DIAMETER:  20*20mm --400*400 mm

WALL THICKNESS: 1.0mm-12mm

STANDARD: DIN ,EN .BS .ASTM .JIS

GRADE: S235/S355

SURFACE TREATMENT: Black, Electro Gal., Hot Dip Gal. 

Certificate:Iso 9001,BS1139Packing:Hexangular Packing in Bundles

We have our own testing house and strict quanlity control system to control our quanlity during the

whole production process.