1. Hluav taws xob vuam ntawm lub qhov (socket) welded yeeb nkab fittings tsim fillet welds, thaum lub pob tw vuam ua pob tw welds. Kev txiav txim siab los ntawm kev txheeb xyuas cov txiaj ntsig ntawm vuam lub zog thiab kev txhawb nqa, pob tw vuam yog zoo dua li qhov sib txuas ntawm lub qhov (socket). Yog li ntawd, lub taub qab vuam yuav tsum tau siv rau hauv qhov chaw uas muaj kev xav tau siab.
2. Feem ntau ntawm cov kav dej uas muaj qhov siab qis thiab qhov me me siv qhov (socket) welded yeeb nkab fittings. Cov neeg uas muaj siab siab feem ntau siv pob tw welded yeeb nkab fittings. Tom qab lub pob tw welding ntawm welded yeeb nkab fittings thiab stainless hlau kav, kev ntsuam xyuas qhov tsis zoo yuav tsum tau ua kom paub tseeb tias tsis muaj qhov to.
3. Lub qhov (socket) vuam txhais tau hais tias ntxig cov kav hlau stainless rau hauv lub qhov (socket) welded yeeb nkab fittings rau hluav taws xob vuam. Butt welding txhais tau hais tias cov ceg kav thiab cov yeeb nkab fittings yog ncaj qha welded txheeb ze rau ib leeg. Feem ntau, qhov yuav tsum tau ua rau lub pob tw vuam yog siab dua li cov qhov (socket welding). Qhov zoo ntawm vuam yog qhov zoo, tab sis txoj kev tshuaj xyuas yog qhov nruj. Butt welding yuav tsum tau kuaj radiographic, thiab qhov (socket welding penetration test) yog txaus. Yog tias cov tshuab ua kua dej hauv cov kav dej tsis muaj qhov xav tau siab rau kev siv hluav taws xob vuam, nws raug nquahu kom siv lub qhov (socket) welded kav rau kev tshuaj xyuas yooj yim.
4. Qhov zoo ntawm qhov (socket) welded yeeb nkab fittings: Tsis muaj teeb meem ntawm kev ua welds; tsis muaj teeb meem ntawm seb lawv puas tau ua raws thiab ntawm sab tsis ncaj ncees lawm; qhov hluav taws xob vuam ib feem tuaj yeem hloov kho kom haum rau vuam.
