厚壁不銹鋼無縫管http://www.yonyao.net/productdetails.asp?id=1574
材質(zhì)：304/L/H,316/L/H,321/H,317/L,347/H,321,310S,2205,2507,904L等 生產(chǎn)標準：GB/T 14976,GB/T 14975,GB/T 13296,ASTM,DIN,EN,JIS,GOST等
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