Ua ntej lub siab pipeline nondestructive kuaj, kev soj ntsuam pom ntawm welds yuav tsum ua raws li cov kev cai. Siab yeeb nkab weld tsos thiab nto zoo ntawm welded pob qij txha yuav tsum tau raws li nram no: vuam yuav tsum saib zoo zoo, dav ntawm txhua sab groove ntug 2 hli overshadowed tsim nyog. Fillet weld ceg qhov siab yuav tsum ua tau raws li cov qauv tsim, cov duab yuav tsum tau hloov pauv.

(1) Tsis txhob cia cov kab nrib pleb, tsis muaj fusion, pores, slag, spatter muaj nyob.
(2) Cov qauv tsim kub yog qis dua -29 degrees cov kav dej, cov kav hlau tsis muaj steel thiab cov kav hlau tawv tawv zoo li yuav loj dua qhov chaw weld, tsis muaj undercut. Lwm yam khoom siv yeeb nkab weld undercut qhov tob yuav tsum siab tshaj 0.5mm, nruam undercut ntev yuav tsum tsis txhob ntau tshaj 100mm, thiab ob sab ntawm weld undercut ib txwm loj hlob mus txog 10 feem pua ​​ntawm tag nrho cov ntev ntawm cov weld.
(3) Tsis txhob qis dua qhov chaw ntawm qhov chaw vuam ntawm cov yeeb nkab. Weld reinforcement thiab tsis ntau tshaj 3 hli, (qhov siab tshaj plaws ntawm cov pob qij txha tom qab zawj).
(4) Welded pob qij txha tsis ncaj ncees lawm sab ntawm phab ntsa thickness yuav tsum tsawg tshaj li 10% thiab tsis ntau tshaj 2 hli.