... quality with high efficiency and annual supply capacity 1.5 million ton. And there are our own large ... black steel seamless pipes ASTM A 106 Gr. B seamless carbon steel pipes for high-temperature service ASTM ... PIPELINE: Material:J55,K55,N80,P110,L80/Gr.B X42,X46,X52,X56/X65,X70 and more. Certificate ... -762mm Wall thickness:2.11mm -59.94mm Length:5-12m,customized Standards:API 5L,API5CT,ASTM A106,ANSI ...