seamless steel pipe :grade
(**4,**4L,**6,**6,**7,**7L,**1.**1H,**0S,**7,**7H.....
special grade (***5,***7,**4L,***0SI2,GH***0,HG**0...
seamless steel pipes :D ****0MM ,SO***0MM,L,We carry out the
national standards, American standards, and other relevant
standards that customers require, with annual production capacity
of over *0,**0 tons of stainless steel pipes.
