welded square/rectangular steel pipe/tube
Size: OD 15x15mm-600x600mm / 20x30mm-600x800mm Wall Thickness: 1.2mm-20mm SCH30,SCH40,STD,XS,SCH80,SCH160,XXS etc. Length: 2-12m Steel material: Q195 Grade B, SS330,SPHC, S185 Q215-Grade C,CS Type B,SS330, SPHC Q235 -Grade D,SS400,S235JR,S235JO,S235J2 ...