Welded and seamless buttweld fittings and forged fittings, such as carbon/stainless steel elbow pipe, tee pipe, reducer, flange,pipe cap, pipe bends, dish ends and pipe sleeve as per asme/astm, din and other known specifications. our products are in compliance with many international standards pipe standard: astm a53,a106,api 5l,asme b36.10m 1996. pipe fittings standard: ansi b16.9/16.28,din 2605 / 2616,jis p2311 / 2312,gost. flange standard: ansi b16.5,din series,jis series,gost series..