Dub square yeeb nkab yog ua los ntawm txias-rolled lossis kub-rolled steel sawb los ntawm kev txiav, vuam thiab lwm cov txheej txheem. Through these processing processes, the black square tube has a high strength and stability, and can withstand greater pressure and loads. Npe: Square & Ratuan ...
1. Lub zog siab: Vim nws cov qauv sib txawv, lub zog sab hauv ntawm tib lub caliber ntau dua 15 zaug siab dua li ntawm cov caliber. 2. Yooj Yim Kev Ua Haujlwm Yooj Yim: Tus neeg ywj pheej corrugated steel yeeb nkab ...