... nipple,bushing,cross,plug,nut,etc. 3.API&ISO certification. stainless steel pipe fitting(1/8"-4"). Cangzhou City Keyuan Hardware and ... Nipple, Bushing, Cross, Plug, Nut,etc. 2,Size from 1/8" to 4" 3,Material:Stainless steel 304,316,304L,316L,321,etc. 4 ... world to make business negotiation and work together to seek opportunities to develop new markets and products. stainless steel pipe fitting(1/8"-4"). ...