The 15CrMo steel pearlite heat-resistant steel, high hot strength (δb ≥ 440MPa) and oxidation resistance at high temperatures, and has a certain resistance to hydrogen corrosion. As the steel contains a higher content of Cr, C, and other alloying elements, the steel hardened tendency obvious, poor welding.[......]
GB9948-2006 is a national standard specifies classification, code name, dimension, shape, weight, technical requirements, specimen, test methods, test rules, packaging, mark and quality certificate. [......]
GB 5310- 2008 standard is applicable to seamless tubes for making steam boiler whose pressure is high or higher and seamless tubes used as pipelines.[......]
The GB5130 standard is mainly used to manufacture high pressure and above pressure steam boiler tubes with high quality carbon structural.