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拱形钢波纹管涵 波纹管涵洞 拱形金属管 structure. Metal co五大连池市 阿城市 尚志市 五常市 安达市 七台河市 绥芬河市 双城市rrugated pipe is a flexible structure. The corrugated pipe has the excellent characteristics of lateral compensation displacement in the structure, which can give full play to the strong tensile performance and superior deformation performance of steel, and has greater anti-deformation and anti-settlement capabilities. It is especially suitable for areas with low foundation bearing capacity and earthquake prone areas such as soft soil, expansive land, and collapsible LOESS. After the completion of the pipe connection, the site coating asphalt can completely avoid the erosion of perennial blisters and acid-base soils, ensure the service拼装排水管
热镀锌工艺。 热镀锌：也叫热浸锌和热浸镀锌：是一种有效的金属防腐方式，主要用于各行业的金属结构设施上。是将除锈后的钢件浸入500℃左右融化的锌液中，使钢构件表面附着锌层，从而起到防腐的目的。
    冷镀锌：就是电镀锌，上锌量少，只有10－50g/m2，就是利用电解作用使金属或其它材料制件的表面附着一层金属膜的工艺。形成均匀、致密、结合力良好的金属层的过程可以起到防止腐蚀,提高耐磨性、导电性、反光性及增进美观等作用。