Kev Taw Qhia luv luv rau cov kav hlau

Hlau nrog ib qho hollow seem uas nws qhov ntev yog ntau dua li txoj kab uas hla lossis ib puag ncig. Raws li tus ntoo khaub lig-sectional duab, nws muab faib ua round, square, rectangular thiab tshwj xeeb-zoo li tus steel kav; Raws li cov khoom siv, nws tau muab faib ua carbon structural steel yeeb nkab, qis alloy steel yeeb nkab, alloy steel yeeb nkab thiab cov yeeb nkab steel yeeb nkab; Raws li daim ntawv thov, nws tau muab faib ua cov kav xa dej, engineering qauv, cov khoom siv thermal, petrochemical kev lag luam, tshuab tsim, geological drilling, high-pressure khoom steel yeeb nkab, thiab lwm yam .; Raws li cov txheej txheem ntau lawm, nws tau muab faib ua seamless steel yeeb nkab thiab welded steel yeeb nkab, uas seamless steel yeeb nkab tau muab faib ua ob hom: kub dov thiab txias dov (kos), thiab welded steel yeeb nkab yog muab faib ua ncaj seam welded steel yeeb nkab. thiab kauv seam welded steel yeeb nkab.