Muaj ntau hom b16.11 welding fittings, xws li luj tshib, hla, tus thawj coj, cap, Unlocky; Thaum asme B16.11 xov fittings tuaj yeem muab cov ntaub ntawv ntim khoom ntawm lauj tshib, hla kev, tus thawj coj, cap, ntsaws, ntsaws, ntsaws, ntsaws, ntsaws, ntsaws, ntsaws, ntsaws, ntsaws, ntsaws, ntsaws, ntsaws, ntsaws, ntsaws, ntsaws, ntsaws.