steel pipe and fittings是什么意思
steel pipe and fittings是什么意思
stainless steel and other pipe fittings什么意思
急求管件技术英语翻译For all carbon steel and Alloy steel fittings with
hardware fittings是什么意思
stainless steel pipe(H-D12)
CW steel pipe是什么钢管?
Stainless steel pipe and tube shall be supplied in the annea
Bore Diameter of Fittings是什么意思?
ERW steel pipe manufactuer in China .
Steel是什么意思
pipe nipple是什么意思
请问pipe binder是什么意思?