1. Kev yuav khoom yuav tsum tau nkag siab txog hom steel kav:
A. Muab faib los ntawm hom: ncaj seam steel yeeb nkab, seamless steel yeeb nkab, kauv steel yeeb nkab, thiab lwm yam.
B. Kev faib tawm ntawm cov duab sib dhos ntawm cov yeeb nkab ncaj seam steel: square yeeb nkab, cov yeeb nkab duab plaub, cov yeeb nkab elliptical, tiaj tus ellipse yeeb nkab, semicircular yeeb nkab, thiab lwm yam.

2. Cov ntsiab lus tseem ceeb:
A. Cov phab ntsa tuab ntawm cov yeeb nkab steel tsis txaus. Siv lub rooj vag txhais tau tias, lub qhov ncauj kawg ntawm cov yeeb nkab steel zoo li tuab nrog rauj daim thaiv, tab sis cov duab qub yuav raug nthuav tawm los ntawm kev ntsuas nrog lub ntsuas.
B. Siv cov seams ncaj nraim li seamless steel kav. Tus naj npawb ntawm cov seam ncaj welds yog tsawg tshaj li ib tug longitudinal weld. Cov yeeb nkab steel ruaj khov yog polished nrog lub tshuab, feem ntau hu ua polishing. Nws zoo li tsis muaj qhov sib txawv ua seamless.
C. Tam sim no tseem muaj txoj hauv kev zoo tshaj plaws yog seamless steel yeeb nkab, uas tseem yog thermally nthuav dav hlau yeeb nkab. Tom qab kev nthuav dav, muaj cov hmoov txhuas nyob rau sab hauv, thiab muaj cov cim hlawv rau sab nraud. Cov welds yog sib npaug tsis pom. Ntau cov kav hlau loj loj tau muag seamlessly siv cov yeeb nkab steel no los nrhiav cov txiaj ntsig loj dua.
D. Circumferential welded seam steel kav siv polishing los sawv cev seamless steel kav thiab ncaj seam steel kav.