Carbon Steel Concentric Reducer Supply SCH40 cabon steel pipe reducer /high pressure reducer/black steel pipe reducer Typepipe fitting reducer SizeSeamless reducer:1/2"~24" DN15~DN600 Welded  reducer: 1/2"~100" DN15~DN2500 Wall thicknesssch5s,sch10,sch20,sch30, sch40s,std, sch40,sch60,sch80s,XS,sch80, sch100, sch120,sch140, sch160, XXS. StandardsASME B16.9-2007  ASME B16.25-2007 EN10253-1-1999 EN10253-2-2007 EN10253-3-2008 EN10253-4-2008 DIN2605-1-1992 DIN2605-2-1995 JIS B2311-2009 JIS B2312-2009 JIS B2313-2009 GB/T12459-2005 GB/T13401-2005 GB/T10752-2005  SH/T3408-1996 SH/T3409-1996 SY/T0609-2006 SY/T0518-2002 SY/T0510-1998  DL/T695-1999 GD2000 GD87-1101 HG/T21635-1987 HG/T21631-1990 MaterialCarbon steel: ASTM/ASME A234 WPB,WPC Alloy steel: ASTM/ASME A234 WP1-WP12-WP11-WP22-WP5-WP91-WP911  Stainless steel: ASTM/ASME A403 WP 304-304L-304H-304LN-304N  ASTM/ASME A403 WP 316-316L-316H-316LN-316N-316Ti  ASTM/ASME A403 WP 321-321H ASTM/ASME A403 WP 347-347HSuper duplex stainless steel: UNS S31803-UNS S32750  Low-temperature steel: ASTM/ASME A402 WPL 3-WPL 6 High performance: ASTM/ASME A860 WPHY 42-46-52-60-65-70 Surface treatmentTransparent oil, rust-proof black oil or hot galvanized Packingwooden case, pallet or as customers' requirement ApplicationsPetroleum, chemical, power, gas, metallurgy, shipbuilding, construction, etc