CW steel pipe是什么钢管?

CW steel pipe是什么钢管? overroll steel pipe是什么 steel pipe,S235JR grade,black tube 是什么钢管,CEV:lower than 0.35% , G.I.pipe是什么钢管? 钢管怎么译?是steel pipe还是steel tube?都能用?那两者有什么不同? SKD Steel Tube是什么钢管? stainless steel lance pipe 是什么管,什么标准?主要应用领域？ 钢管中的blind 国外询盘中带的blind pipe是什么? lancing pipe什么钢管 stainless steel pipe(H-D12) Stainless steel pipe Sch.# 10 S,Thickness 6 mm 是什么意识 ..特别是# 10 S 是什么意识 steel pipe sleeve and penetraiton什么意思? ductile iron,steel or HDPE pipe 英语翻译At the same time,a steel pipe(钢管) is pushed down to stop the sides from falling in and to keep out water. 完型：At the same time,a steel pipe(钢管) is p______ down to .A.put B.pulled C.pushedAt the same time,a steel pipe(钢管) is p______ down to stop the sides from falling in and to keep out water.附全文：Nowadays more and more people care abo 请问black ew steel pipe 标准为A53 B stainless steel and other pipe fittings什么意思 PIPE ASTM A 106 GR.B,SMLS,BE.ASME B 36.10问一下这是什么钢管 什么标准