Caps are welded to the pipe end or industrial tube fittings installed on the outer threaded pipe end cap blocking used to close the pipeline, the role and tube plugging the same convex cap include: hemispherical pipe cap, oval cap , disc cap and spherical cap cap cap carbon steel pipe cap, stainless steel cap, alloy cap, can meet your different needs. standard ASME B16.9-2007 ASME B16.25-2007 ASME B16.5-2007 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 Production: bending, extrusion, molding methods push the system, molding, machining, cold working or heat processing. Application industry: electric power, oil and gas, petrochemical, chemical, shipbuilding, heating, papermaking, metallurgical and other size cap: 1/2 "~ 78" DN15 ~~ DN1900 wall thickness sch10, sch20, sch30, std, sch40, sch60, xs, sch80, sch100, sch120, sch140, sch160, xxs, sch5s, sch20s, sch40s , sch80s maximum wall thickness: 150mm Material Carbon steel: ASTM / ASME A234 WPB-WPC Alloy: ASTM / ASME A234 WP 1-WP 12-WP 11-WP 22-WP 5-WP 91-WP 911 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 347-347H low temperature steel: ASTM / ASME A402 WPL 3-WPL 6 high-performance steel: ASTM / ASME the A860 WPHY 42-46-52-60-65-70 cap parameters project outside diameter 1/2 "~~ 78" DN15 to DN1900 wall thickness 2mm to 150mm sch10 sch20 sch30, std, sch40, sch60, xs, sch80, sch100, sch120, sch140, sch160, xxs, sch5s, sch20s, sch40s, sch80s