Choosing standards for urban gas steel pipe coating

With the trends of urbanization, urban gas steel pipe’s demands would be increasing too. No matter ERW steel pipe or seamless one, we still have some standards for the choosing of them. Today, let’s have a view for the standards of ERW one. The aspects we should pay attention to during the whole purchasing process would be here: good insulating and mechanical properties; good resistance to cathodic dis-bondment performance; good resistance to water, gas permeability; good chemical resistance soaking performance and anti-aging properties; resistance to low temperature and high temperature performance; easy mending and mending; at reasonable prices.