Common Abbreviation For Steel Tube

•SMLS: seamless stainless steel pipe

•ERW：electric resistance welding 

•EFW: electric-fusion welded 

•SAW： submerged arc welding 

•SAWL ：Longitude 

•SS：stainless steel 

•P.E.:plain end 

•B.E.：Beveled end 

•Thread end: 

•BW: butt welded end 

•Cap 

•NPT：national pipe thread