API 5L, A106B pipe, Butt weld fittings, Forged fittings, flanges. Carbon Steel & Stainless Steel, standard: ASTM, DIN, JIS SEAMLESS API5L PIPES,still pipes SIZE : 1/2" NB TO 6 " NB - SCH 5 S, SCH 10S, 40, 40S, 80, 80S, 160 & XXSSIZE : 8" NB TO 12 " NB - SCH 5 S, SCH 10S, 10, 20, 30, STD, 40, 40S, 80, 80S, 100, 120, 140, 160 & XXSWELDED / ERW / EFWSIZE : 1/2" NB TO 6 " NB - SCH 5 S , SCH 10S, 40, ...