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Kauv welded steel yeeb nkab
Kauv steel kav yog tsim los ntawm steel coil, extrusion tsim nyob rau hauv ib txwm kub, ces coj lub tshuab ntawm ob chav hlau thiab ob-ntsej muag submerged-arc welded.
Kauv steel kav yog tsim los ntawm steel coil, extrusion tsim nyob rau hauv ib txwm kub, ces coj lub tshuab ntawm ob chav hlau thiab ob-ntsej muag submerged-arc welded.