... ,3A,RJT,DS,BS,BPE 4)ISO9001:2008 Features: 304 Stainless Steel Welding Concentric Reducer 1)Material:SUS304,304L,316,316L 2 ... types:welded,clamp,union,threaded..... 8)Polish:mirror polish,sub-light,180G.240G,400G,tumble,pickling,passivation Packing: Wooden Box