Seamless carbon steel tubes EN10305-1 ST52 NBK 这说的是16Mn材质吗?

Seamless carbon steel tubes EN10305-1 ST52 NBK 这说的是16Mn材质吗? Seamless Carbon Steel Pipe for High Temperature Service 指的就是ASTM A106的无缝钢管吗? carbon 英语翻译A520 specification for supplementary requirements for seamless and electric-resistance-welded carbon steel tubular products for high-temperature service conforming to ISO recommendations for boiler construction. 英语翻译Carbon Steel Seamless Pipes with wall thickness .84421.43mm),API 5L X52 ASME B63.10 PSL2 with outside Coating bythree layers of Poly Ethylene 英语翻译1.Cold-Drawn Carbon Steel Seamless Pipe 15XM OD 25.0 mm,Wall Thickness 1.0 mm,Length 6500 mm,Quantity 77 547 m2.Cold-Drawn Carbon Steel Seamless Pipe 15XM OD 25.0 mm,Wall Thickness 1.0 mm,Length 7000 mm,Quantity 75 348 m3.Cold-Drawn Carbo seamless network seamless union是什么意思呀seamless是什么意思 英语翻译Line Pipe,Carbon Steel Seamless,Size 6,W.T 0.375,accor.to API - 5L ,Gr B,End Beveled,Black Bar,DRL ( 12 ) M.L,Qty= 7000 M. Stainless.stee是啥意思啊 seamless jointing是什么意思 SEAMLESS TUBE11/2是什么意思? the original multifunctional seamless Love not Providence seamless seamless ribbon是什么意思 seamless machine 各位大哥大姐,弟弟妹妹：SEAMLESS MACHINE carbon life carbon steel plain carbon