Global Stainless Steel is Importer & Exporter Stainless Steel Co. is one of the leading Manufacturer, Exporter, Stockist & Supplier of Carbon Steel Butt Weld Fittings in India. This Specification covers wrought carbon steel and alloy steel fittings of seamless and welded construction. This CS Pipe Fittings are used in pressure vessel fabrication for service at moderate and elevated high temperatures and in pressure piping.