1 main material: 20G,A106C,ST45.8/3 2 high pressure boiler pipe 3 best quality and price 20G,A106C,ST45. ... 8/3 high pressure boiler pipe We are speciliaed in supplying high pressure seamless steel pipe with heat-resistingThe ... -99,DIN17175-79 Heat-resisting seamless steel pipe used for high pressure boilerΦ 16-824×2-65 mmSpecification List of Part Products ...