... Startion Iron & Steel Co., Ltd ,which is a trading company based on the goods of International and Domestic.steel markets ... " to 18"SCH20,30,40,60,STD XSAPI5LGR.B/X42,X52,X605.8m,6m,5m to 12m randomERW ... black steel seamless pipes ASTM A 106 Gr. B seamless carbon steel pipes for high-temperature service ASTM ... OIL PIPELINE: Material:J55,K55,N80,P110,L80/Gr.B X42,X46,X52,X56/X65,X70 and more. Certificate ...