1. Cov kav dej seamless tau siv dav. General-purpose seamless kav yog dov los ntawm cov pa roj carbon zoo tib yam steel, uas tsis muaj alloy structural steel los yog alloy structural steel, nrog rau qhov loj tshaj plaws tso zis ntau lawm, thiab tsuas yog siv raws li pipelines los yog structural qhov chaw rau conveying kua.
2. Raws li kev siv sib txawv, nws muab faib ua peb pawg: a. Raws li tshuaj muaj pes tsawg leeg thiab txhua yam khoom; b. Raws li mechanical zog; c. Raws li kev ntsuas hydraulic. Cov kav hlau xa khoom raws li pawg a thiab b, yog tias lawv siv los tiv thaiv cov kua siab, yuav tsum raug kuaj xyuas hydrostatic.
3. Muaj ntau yam seamless kav rau lub hom phiaj tshwj xeeb, xws li seamless kav rau boilers, seamless kav rau geological siv thiab seamless kav rau roj av.
