Hot-dip galvanized steel pipe is the company's traditional product, with an annual output of 600000 tons and product specification DN15mm-DN200mm, in which gas special galvanized steel pipe realizes advanced process control such as on-line deburring and ET eddy current testing, average zinc layer thickness not lower than 500g/m2, 100% water pressure testing, etc., and independently developed coated pipes with stronger anti-corrosion performance. The company presided over or participated in the drafting of many national and industry standards such as GB/T13793-2016 "straight seam welded steel pipe" and GB/T3091-2015 "welded steel pipe for low pressure fluid transportation", and became the key pipeline supplier of domestic gas companies in major cities.