Abstract
This specification covers round, square, rectangular, and special shape electric-resistance-welded carbon and alloy steel mechanical tubing produced by hot- or cold-rolling. The types of tubing covered here are: Type 1a, as-welded from hot-rolled steel (with mill scale); Type 1b, as-welded from hot-rolled pickled and oiled steel (mill scale removed); Type 2, as-welded from cold-rolled steel; Type 3, sink-drawn hot-rolled steel; Type 4, sink-drawn cold-rolled steel; Type 5, drawn over a mandrel; and Type 6, special smooth inside diameter. Heat and product analyses shall be made to determine the percentages of chemical elements, to which the steel specimens shall conform to. Tubing shall be free of injurious defects and shall have a workmanlike finish. When specified, tubing shall be coated with a film of rust retarding oil before shipping.
Scope
1.1 This specification covers electric-resistance-welded carbon and alloy steel tubing for use as mechanical tubing.
1.2 This specification covers mechanical tubing made from hot- or cold-rolled steel.
1.3 This specification covers round, square, rectangular, and special shape tubing.
| Type | Size Range (Round Tubing) |
| Electric-Resistance-Welded Tubing from Hot-Rolled Steel | outside diameter from ½ to 15 in. (19.0 to 381.0 mm) |
| wall from 0.065 to 0.650 in. (1.65 to 16.50 mm) | |
| Electric-Resistance-Welded Tubing from Cold-Rolled Steel | outside diameter from 3/8to 12 in. (9.92 to 304.8 mm) |
| wall from 0.022 to 0.134 in. (0.71 to 3.40 mm) |
1.4 Optional supplementary requirements are provided and when desired, shall be so stated in the order.
1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
