Dear Sir, We - Excel Distributors introduce ourselves as one of the leading importer & exporters a wide range flanges, butt weld fittings, stainless steel pipes, seamless ERW pipe round bars etc. Fasteners Stud Bolts: (ASTM A193 B7, B7M, L7, L7M, B8, B8M) Hex Head Machine (Grade 8.8, 10.9, 12.9, ...