square PIPE: 1) thickness:0.5-20mm 2) size:15X15-600X600mm 3) Length:3-12m 4) Material:Q195,Q235,Q345 ERW PIPE:1) Materials can be altered to meet customers' requirements 2) Customized requests accepted3) sectional form:round,equal,rectangle3) Round Section,Dimensions (mm): from 10 to 400;1/2"in to 12i"n4) Equal Section,10x10mm-400x400mm5) Rectangle Section,20x10mm-400x200mm6) Seamless pipe: from ...