20# rectangular steel pipes We can supply the products of high ... A500 JIS G3466,EN10210 or technical agreementGrade:Q195-Q235,Q345,20#,AlloySteelST37-2,ST52-3,S235,S355etcPacking: In bundles, Varnish coating ... domain and so onHebei Shengtian Pipe Fiitings Group is a special enterprise which produces all kinds of pipes.We suplly all ...