Taw qhia rau Cov yam ntxwv ntawm Resistance Welded Pipes

Cov txheej txheem ntau lawm ntawm cov kav hlau tsis kam yog qhov yooj yim, kev ua haujlwm ntau lawm yog siab, muaj ntau ntau yam thiab cov kev qhia tshwj xeeb, thiab cov cuab yeej siv nyiaj tsawg, tab sis lub zog dav dav yog qis dua li cov kav dej seamless. Txij li thaum xyoo 1930, nrog rau kev loj hlob sai ntawm kev sib txuas ua ke ntawm cov hlau zoo thiab kev nce qib ntawm vuam thiab tshuaj xyuas tshuab, qhov zoo ntawm welds tau txuas ntxiv txhim kho, thiab ntau yam thiab cov ntsiab lus ntawm cov kav hlau welded tau nce ib hnub. , thiab tau hloov cov kav hlau tsis-woven hauv ntau thiab ntau qhov chaw. Sewing steel yeeb nkab.