2016年7月2日 · Last previous edition approved in 2001 as A 787 – 01.2 For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at [email protected].

2022年11月29日 · 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.

Electric-Resistance-Welded Metallic-Coated Carbon Steel Mechanical Tubing1. This standard is issued under the fixed designation A 787; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.

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.

ASTM A787 Type 2 welded mechanical tubing is produced using carbon steel that has been pre-coated with a thin layer of zinc while in coil form. A787 Type 2 tubing is often used in applications where rust resistance is critical and provides for extended durability than non-coated carbon steel.

ASTM A787/A787M-20 Standard Specification for Electric-Resistance-Welded Metallic-Coated Carbon Steel Mechanical Tubing

2025年2月27日 · 1.2 本规范涵盖外径或最大外部尺寸为 1/2 至 15 英寸 [12.7 至 380.0 毫米]、壁厚为 0.028 至 0.180 英寸 [0.70 至 4.60 毫米] 的机械管材。 1.3 如果满足规范的所有其他要求，则可以订购超出上述范围的尺寸。 1.4 本规格同时采用英寸-磅单位和SI单位表示；但是，除非采购订单指定适用的 M 规格名称（SI 单位），否则应采用英寸-磅单位。 以 SI 单位或英寸-磅单位表示的值应单独视为标准。 在正文中，SI 单位显示在括号中。 每个系统中规定的值可能并不完全相 …

1.1 ”This specification covers round, square, rectangular, and special shape, electric-resistance-welded carbon steel mechanical tubing, either zinc-coated (galvanized) after welding or …

ASTM A787涉及到圆形、方形、矩形和特殊形状的电阻焊机械管，而ASTM A787/A787M-22标准主要涵盖了圆形、方形、矩形和特殊形状的电阻焊机械管，这些管道主要用于镀锌或由镀铝、镀锌、锌制成-铁合金涂层 (Fra Baidu bibliotek锌)，或558201%铝锌合金涂层钢板。

ASTM A787/A787M REV A《Standard Specification for Electric-Resistance-Welded Metallic-Coated Carbon Steel Mechanical Tubing》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 ...