Forged steel什么意思

Forged steel什么意思 forged steel Material: Forged steel, mill finish, except threads 1/2 NPT class 3000 forged steel threaded coupling是什么意思 Diameter of Steel Messenger什么意思啊 japan movt stainess steel back 什么意思 stainless steel and other pipe fittings什么意思 100 mts carbon steel flat bars 什么意思 手表背面stainless steel 200meters water resistant什么意思 steel中文意思是 steel In case of fire,the steel grates must open谁知道这句话什么意思