1)Name:hot dip galvanized steel pipe 2)OD:1/2"-48" ... :SSAW,LSAW,SEAMLESS 5)Standard:ASTM,DIN,JIS Type hot dip galvanized steel pipe SizeSeamless Pipe: 1/2”~48”, DN15~DN1200 ... 9,150M19,En46..Length6-12mIndustrial processhot rolled,hot expanded,cold drawn,and hot galvanizedSurface treatmentTransparent oil, rust-proof black ... website , your inquiries will be reply promptly! hot dip galvanized steel pipe