... .9 / 16.28, ASTM A53/A106, API 5L, ASME B36.10M---1996, DIN2605 / 2615 / 2616, JIS P2311/2312 ... T/T OR L/C OR Western Union. 10) Special design availableAll the production process are made ... SCH120, SCH140, SCH160, XXSStandardsASME B16.9-2007 ASME B16.25-2007ASME B16.5-2007EN10253-1-1999 EN10253- ... MaterialCarbon steel :(ASTM A234WPB,,A234WPC,A420WPL6. 20#,Q235,10#,20#,A3, Q235A, 20G,16Mn, ect)Alloy steel ...