name: steel pipe material: carbon steel A234 WPB ANSI B16.9 standard: ASTM, ASME, GB, JIS,DIN, BS ISO9001/9002 ItemCatalogDescription1ProductsFlange,Elbow,Tee ... Seamless :1/2''--24'',Butt Welding:26''--72'')3MaterialCarbon steel,Stainless steel,Alloy Steel4Material GradesA234 WPB,A106,A53,API 5L,A105,A333Cr6,A333Cr3 ... gas industry 5. Chemistry industry 6. Electric industry ANSI alloy steel pipe