• SMLS: seamless stainless hlau yeeb nkab
• ERW : fais fab vuam
• EFW: hluav taws xob-fusion welded
• SAW : submerged arc vuam
• SAWL : Ntev
• SS : stainless hlau
• PE: dawb tag
• Be vel Beveled kawg
• Xov kawg:
• BW: taub qab welded kawg
• Cap
• NPT : cov yeeb nkab thoob teb






