1. Phaj sojntsuam: tom qab steel phaj siv los tsim cov kab loj submerged arc welded ncaj seam steel yeeb nkab nkag mus rau hauv cov kab ntau lawm, thawj tag nrho phaj ultrasonic tshuaj xyuas yog ua.
2. Milling: ob lub npoo ntawm lub phaj steel yog milled ntawm ob sab los ntawm ntug milling tshuab kom ua tiav cov phaj dav, phaj ntug sib npaug thiab cov duab zawj.
3. Pre dabtsi yog khoov: ua ntej khoov lub phaj ntug nrog lub tshuab ua ntej bending kom lub phaj ntug muaj qhov yuav tsum tau curvature.
4. Kev sib sau: ntawm JCO txoj kev tshuab, ua ntej, ib nrab ntawm lub pre bent steel phaj yog nias rau hauv "J" zoo tom qab ob peb zaug ntawm kauj ruam xuas nrig ntaus, thiab tom qab ntawd ib nrab ntawm cov hlau phaj tseem khoov thiab nias rau hauv "C" duab los ua "O" zoo ntawm qhov qhib.
5. Pre welding: tsim ncaj seam welded steel kav yog welded ua ke thiab tsis tu ncua welded nrog roj shielded vuam (MAG).
6. Internal welding: longitudinal multi hlau submerged arc vuam (feem ntau yog plaub hlau) yog siv los welding nyob rau hauv ncaj seam steel yeeb nkab.
7. Sab nraud welding: longitudinal multi hlau submerged arc vuam yog siv los welded rau sab nraud ntawm longitudinal submerged arc welded steel yeeb nkab.
8. Ultrasonic tshuaj xyuas I: kev tshuaj xyuas cov welds sab hauv thiab sab nraud ntawm txoj hlua ncaj nraim welded steel yeeb nkab thiab lub hauv paus hlau ntawm ob sab ntawm lub vuam.
9. X-ray tshuaj ntsuam I: X-ray muaj TV tshuaj xyuas ntawm cov welds sab hauv thiab sab nraud, siv cov duab ua kom pom qhov rhiab heev.
10. Expanding: tag nrho ntev ntawm submerged arc welded ncaj seam steel yeeb nkab yuav tsum tau nthuav dav los txhim kho qhov tseeb qhov tseeb ntawm cov yeeb nkab steel thiab kev faib tawm ntawm kev ntxhov siab ntawm cov yeeb nkab steel.
11. Hydrostatic test: cov kav hlau txuas tau raug tshuaj xyuas ib qho los ntawm ib qho ntawm lub tshuab kuaj hydrostatic kom ntseeg tau tias cov kav hlau steel ua tau raws li cov qauv ntsuas siab. Lub tshuab muaj kev ua haujlwm ntawm kev kaw lus tsis siv neeg thiab khaws cia.
12. Chamfering: txheej txheem cov yeeb nkab kawg ntawm cov yeeb nkab steel tsim nyog kom tau raws li qhov xav tau cov yeeb nkab kawg zawj loj.
13. Ultrasonic tshuaj xyuas II: ultrasonic soj ntsuam yuav tsum tau nqa tawm ib tug los ntawm ib tug ntxiv mus xyuas qhov muaj peev xwm ntawm longitudinal welded steel yeeb nkab tom qab expanding thiab dej siab.
14. X-ray tshuaj ntsuam II: ua X-ray industrial TV tshuaj xyuas thiab tube kawg weld tua rau steel kav tom qab nthuav thiab hydrostatic test.
15. Magnetic particle soj ntsuam ntawm cov yeeb nkab kawg: ua qhov kev tshuaj xyuas no kom pom cov yeeb nkab kawg.
16. Kev tiv thaiv corrosion thiab txheej txheej: cov kav hlau uas tsim nyog yuav tsum muaj kev tiv thaiv corrosion thiab txheej txheej raws li tus neeg siv yuav tsum tau ua.
