Seamless / ERW Pipes : ASTM/ASME A106 Gr.A/B/C, A53 Gr. A/B, API5L, X42, X52, X65, etc. Seamless Boiler Tubes : BS-3059/part2 & ASTM A-179 or equivalent. ERW Boiler Tubes : BS-3059/part 1 or 3 RANGE : SIZE - 1/4" TO 56" THICKNESS : 0.5 mm TO 60 mm SCHEDULE : SCH. 5 TO SCH. XXS TUBE RANGE : SIZE: 3 mm OD to 60 mm OD THICKNESS : 0.1 mm TO 6.00 mm