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ASME SA179/SA179M

The standard specification covering minimum-wall-thickness cold-drawn low-carbon steel tubes for tubular heat exchange, condensers, and similar heat transfer apparatus. This specification cover tubes 1/8″ to 3″ [3.2 mm to 76.2 mm], inclusive, in outside diameter. The ASTM A179 tubes shall be made by the seamless process and shall be cold drawn; and they shall be heat treated after the final cold draw pass at a temperature of 1200°F [650°C] or higher. These seamless tubes are usually called as low-carbon steel tubes, heat exchange tubes, boiler tubes, etc.

Specification

Size Range：OD:1/4" (6.25mm) to 8" (203mm), WT 0.02" (0.5mm) to 0.5"(12mm)

Outer Diameter：10 MM – 38.1 MM

Wall Thickness：1 MM – 10 MM

Length：3000 MM – 16000 MM,Single Random, Double Random & Required Length, Custom Size – 12m lengths

Ends:Plain end or beveled end, square cut, burr free ,Plastic Cap at Both end

Process:Cold drawn, Cold rolled, Hot Rolled

Wall Thickness Tolerance：

Seamless Cold-Finished Tubes
Outside Diameter In.(mm)	Wall thickness Tolerance %
Outside Diameter In.(mm)	Over (+)	Under (-)
1 ½ (38.1) and under	20	0
Over 1½ (38.1)	22	0