size:1/8"-4" material:ss304,ss316 threaded:BSP,BSPT,NPT, ... UKAS 306 stainless steel pipe fittings:size:1/8"-4" material:ss304,ss316 threaded:BSP,BSPT,NPT,DIN2999, ... 40,150 pound;3.Thread-test prior to shipment;4.Pneumatic pressure testing is performed on every fitting ... is strictly executed;6.Unions are completely interchangeable;7.No burrs are insideBall valves:Anping County Kaixuan Stainless Steel ...