... features: Certificate:ISO9001-2000 Standard:JIS, DIN, ASTM, Material: carbon /stainless stele Reducer:1/2"-80" Typecarbon steel bendSize:1/ ... 2”---80”Wall thicknessSch5sch160StandardANSI, ASME, JIS, DINMaterial1) carbon steel : ASTM A234,WPB,WPC, ASTM A420,WPL9, WPL3,WPI6A ... the production processes are made under the ISO9001-2000 strictly carbon steel bend connector for oil pipeline