HOME Stainless Steel 321 Buttweld Fittings Manufacture Sachiya Steel International is a Leading Manufacture And Exporter Of a wide range of Stainless Steel 321 Buttweld Fittings, which is non-magnetic and offered in different sizes. This Stainless Steel 321 Butt Weld Fittings is often used in super-heater and afterburner parts, along with compensators and expansion bellows.