Fittings with material: stainless steel, carbon steel, etc. and with all kinds of types ... B16.9,,DIN 2605,JIS ,GB/T12459,GB/T134015) Material: stainless steel (304, 304L, 316, 316L, 321, 321H, 310S, 347H)6 ... , medical equipment, aviation, boiler heat exchanger, and other fields Steel Fitting