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ASTM A787/A787M-09

Historical Revision

Standard Specification for Electric-Resistance-Welded Metallic-Coated Carbon Steel Mechanical Tubing

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1.1 This specification covers round, square, rectangular, and special shape, electric-resistance-welded mechanical tubing, either zinc-coated (galvanized) after welding or produced from aluminum-coated, zinc-coated (galvanized), zinc-iron alloy-coated (galvannealed), or 55 % aluminum-zinc alloy-coated steel sheet. Tubing for use as electrical conduit (EMT) or intermediate metallic conduit (IMC) is not covered by this specification.

1.2 This specification covers mechanical tubing with outside diameters or maximum outside dimensions ranging from ½ to 15 in. [12.7 to 380.0 mm] and wall thickness from 0.028 to 0.180 in. [0.70 to 4.60 mm].

1.3 Sizes outside the ranges listed above may be ordered provided all other requirements of the specification are met.

1.4 This specification is expressed in both inch-pound units and in SI units; however, unless the purchase order specifies the applicable M specification designation (SI units), the inch-pound units shall apply. The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.


This guide covers standard specification for round, square, rectangular, and special shape, electric-resistance-welded mechanical tubing, either zinc-coated (galvanized) after welding or produced from aluminum-coated, zinc-coated (galvanized), zinc-iron alloy-coated (galvannealed), or aluminum-zinc alloy-coated steel sheet. Low-carbon steels and other carbon steels shall conform to the required chemical composition for carbon, manganese, phosphorus, and sulfur. The steels shall conform to elemental tolerances for product analysis. Wall thickness tolerances for premetallic coated as-welded tubing and diameter tolerances for metallic-coated round tubing shall be provided.


SDO ASTM: ASTM International
Document Number A787
Publication Date Oct. 1, 2009
Language en - English
Page Count 9
Revision Level 09
Supercedes
Committee A01.09
Publish Date Document Id Type View
Oct. 15, 2024 A0787_A0787M-24 Revision
Nov. 1, 2022 A0787_A0787M-22 Revision
Nov. 1, 2020 A0787_A0787M-20A Revision
July 1, 2020 A0787_A0787M-20 Revision
Sept. 1, 2015 A0787_A0787M-15A Revision
May 1, 2015 A0787_A0787M-15 Revision
May 1, 2014 A0787_A0787M-14 Revision
Oct. 1, 2009 A0787_A0787M-09 Revision