热镀锌波纹管 波纹涵管厂家直销

The internal str 热镀锌波纹管 波纹涵管厂家直销 直径两米三米四米壁厚3/4/5/4.5/6毫米uctural handling force of corrugated Guanhan can galvanize the corrugated pipe Guanhan drainage corrugated metal drain pipe Structural treatment of corrugated Guanhan: (1) The corrugation is a circular whole tube, which is assembled by whole pipe joints and flange bolts. (2) After processing the steel corrugated plate culvert, hot galvanizing and other antiseptic treatment shall be used. If the galvanized steel plate is selected for processing, it is necessary to perform secondary treatment after processing.