ASTM A250M-04 ERW Welded Super Heater Tubes
This specification covered several grades, designated T1, T1a, T1b, T2, T11, T12 and T22, of minimum-wall-thickness,electric-resistance-welded, carbon-molybdenum and chromium-molybdenum alloy-steel, boiler and super heater tubes.
OD:12.7 to 127 mm
WT:0.9 to 8.1 mm
Grade:ASTM A250 T1, T1a, T1b, T2, T11, T12, T22
Schedules : 20, 30, 40, Standard (STD), Extra Heavy (XH), 80, 100, 120, 140, 160, XXH & heavier
Length: 5.8, 6, 11.8, 12m, or as needed
Uses: widely used in oil, food, chemical industry, construction, electricity, nuclear, biotechnology, machinery, paper, shipbuilding and boiler
Shape: square, round and rectangular
Surface: black, pre-galvanized, hot galvanized, oiled and painted
Delivery status: hot rolled, annealed, normalized, hardened and tempered
Package: hexagonal bundled or loose packing.
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