ASTM A210 Gr A1 / ASTM A213 Seamless Boiler Tubes

Boiler and superheater tubes operate under severe thermal transfer and internal hydrostatic pressures requiring certified dimensional tolerances and statutory compliance. Seamless Steel Industries stocks and supplies cold-drawn seamless boiler tubes conforming to ASTM A210 Grade A1 (medium-carbon) and ASTM A213 (T11, T22 alloy) certified under Indian Boiler Regulations (IBR 1950).

Boiler Tubing Geometry vs Nominal Piping

Unlike nominal pipe which is specified by schedule, boiler tubes are strictly designated by precise outside diameter (OD in mm or inches) and minimum wall thickness (MWT or Birmingham Wire Gauge / BWG). Seamless Steel Industries supplies diameters from 19.05 mm (3/4″) to 101.6 mm (4″) in standard 6-meter and 12-meter straight lengths, with cut-to-size tubes available for immediate shutdown retubing.

Mechanical Testing & Statutory IBR Verification

Every tube undergoes compulsory cold-bend testing, flaring test, flattening test, and non-destructive electric (Eddy Current) or hydrostatic testing. IBR-certified boiler tubes available to the specified material and inspection requirements, facilitating smooth statutory clearance during scheduled boiler inspections.

Dispatch & Staging Logistics

Packed in hexagonal bundles with end protection caps and anti-corrosive varnish, tubes are staged and dispatched from our central Kalyan Phata facility in Mumbai–Thane directly to utility power stations, sugar mills, and process boiler plants nationwide.