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Peb yog cov chaw tsim khoom loj tshaj plaws ntawm steel hollow seem hauv Suav teb.Peb tsuas yog tsim customized ERW kav, LSAW kav, SSAW kav, HFW kav thiab seamless kav.square hollow seem: 10 * 10 * 0.5-1000 * 1000 * 60mm rectangular hollow seem: 10 * 15 * 0.5-800 * 1100 * 60mm ncig hollow seem: 10.3-2032mm THK: 0.5-60mm