Cov kav hlau raug muab faib ua cov kav hlau tsis muaj seamless thiab cov kav hlau welded (cov kav hlau seamed).

Cov yeeb nkab boiler yog ib hom yeeb nkab seamless. Txoj kev tsim khoom zoo ib yam li cov yeeb nkab seamless, tab sis muaj cov kev cai nruj heev rau cov qib hlau siv rau kev tsim cov yeeb nkab steel. Raws li qhov kub thiab txias siv, nws tuaj yeem muab faib ua cov yeeb nkab boiler dav dav thiab cov yeeb nkab boiler siab.

1) Cov qib hlau ntawm cov hlau ua los ntawm cov pa roj carbon zoo yog 20G, 20MnG thiab 25MnG.

2) Cov hlau sib xyaw ua ke qib 15MoG, 20MoG, 12CrMoG, 15CrMoG, 12Cr2MoG, 12CrMoVG, 12Cr3MoVSiTiB, thiab lwm yam.

Cov Yeeb Nkab Hlau Tsis Muaj Qhov Txuas Rau Cov Boilers Siab Qis Thiab Nruab Nrab (GB3087-2008), Cov Yeeb Nkab Hlau Tsis Muaj Qhov Txuas Rau Cov Boilers Siab Siab (GB5310-2008), ASME SA-106, ASME SA-213, ASTM A335

Tsis tas li ntawd xwb, peb lub tuam txhab kuj ua haujlwm cov kav hlau tsis muaj seamless rau cov qauv (GB/T 81628163), cov kav hlau tsis muaj seamless rau kev tawg roj av (GB9948), cov kav hlau tsis muaj seamless rau cov chiv siab (GB6479), cov kav dej roj (API 5L) thiab cov kav dej roj (API 5CT), thiab cov khoom siv yeeb nkab hlau.