Cov kav hlau tsis muaj seamless tuaj yeem muab faib ua ASTM American tus qauv seamless steel kav, DIN German tus qauv seamless steel kav, JIS Japanese tus qauv seamless steel kav, GB lub teb chaws seamless steel kav, API seamless steel kav thiab lwm hom raws li lawv sawv ntsug ...
Hauv kev lag luam yeeb nkab hlau seamless tam sim no, cov kev xav tau ntawm cov neeg siv khoom tab tom maj mam zuj zus, tshwj xeeb tshaj yog rau cov xaj nrog qhov tsawg kawg nkaus. Yuav ua li cas kom tau raws li cov kev xav tau ntawm cov neeg siv khoom no tau dhau los ua peb qhov tseem ceeb tshaj plaws. Thaum ntsib qhov xwm txheej no, peb nquag sib txuas lus nrog ma...