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钢护筒常用厚度：6mm,8mm,10mm,12mm,14mm,16mm,18mm,20mm,25mm,30mm,螺旋管 钢护筒材质：Q235B q355b钢护筒

钢护筒规格型号：800mm,900mm,950mm,1000mm,1050mm,1100mm,1150mm,1200mm,1250mm,1300mm,1350mm,1400mm,1450mm,1500mm,1550mm,1600mm,1800mm,2000mm,2200mm,2400mm,2500mm钢护筒,