热镀锌管，为提高钢管的耐腐蚀性能，对一般钢管进行镀锌。镀锌钢管分热镀锌和电镀锌两种，热镀锌镀锌层厚，电镀锌成本低，表面不是很光滑。
热镀锌管 欧盟CE认证法规
建材CPR Regulation (EU) No 305/2011
EN 1123-1:1999 适用CE认证热镀锌管范围
This standard specifies requirements, tests and quality control for longitudinally welded, hot-dip galvanized steel pipes and fittings with spigot and socket for use in waste water systems usually operating under gravity or at a low head of pressure. For the purposes of this standard, components are pipes, fittings, joints and seals. This standard is for components used for the discharge of: domestic waste water; surface water; and groundwater. This standard is also for components discharging other waste water (e.g. industrial waste water) as long as it does not damage the components or endanger the health and safety of personnel.
本标准规定了通常在重力或低压头条件下运行的废水系统中使用的带插口和套筒的纵向焊接热浸镀锌钢管和管件的要求、试验和质量控制。就本标准而言，部件是管道、管件、接头和密封件。本标准适用于以下排放部件：生活废水；地表水；以及地下水。本标准也适用于排放其他废水（如工业废水）的部件，只要不会损坏部件或危及人员的健康和安全。