1.1 本规范涵盖由不同等级的奥氏体、铁素体、马氏体和双相不锈钢材料制成的平均或最小壁厚焊管，其中( 1. )外管表面( 2. )内管表面，或( 3. )内外管表面都有纹理结构，以改善传热或流体流动，或两者兼而有之。纹理表面是在焊接前，通过在基带材料表面上冷成型指定配置而形成的。生产的焊接变形管可用于锅炉、过热器、冷凝器、蒸发器、换热器和其他类似的传热设备，直径不超过1。 5英寸。[38 mm]，各种壁厚小于等于0.079 in。[2毫米]。 1.2 通常根据本规范提供的管道尺寸和厚度为0.375英寸。[10 mm]内径（ID）至1.5 in。[38 mm]外径和0.020至0.079 in。壁厚[0.5至2 mm]（含）。如果管道符合本规范的所有其他要求，则可以提供其他尺寸的管道。 1.3 提供了可选的补充要求，当需要其中一个或多个时，应在订单中说明。 1.4 本规范包括几种等级的奥氏体、铁素体、马氏体和双相不锈钢。并非所有合金都适用于所有条件。选择将取决于设计和服务要求。 1.5 以英寸-磅单位或国际单位表示的数值应单独视为标准值。在文本中，SI单位显示在括号中。每个系统中规定的值可能不完全相等；因此，每个系统应独立于其他系统使用。组合两个系统的值可能会导致- 符合标准。除非订单中规定了本规范的“M”名称，否则应使用英寸-磅单位。 1.6 以下安全危害声明仅适用于本规范的试验方法和补充要求。补充要求中给出了具体的警告声明。 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.7 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。

1.1 This specification covers average or minimum-wall thickness welded tubes made from various grades of austenitic, ferritic, martensitic and duplex stainless steel materials in which the ( 1 ) external tube surface, ( 2 ) internal tube surface, or ( 3 ) both internal and external tube surfaces have a textured configuration for improved heat transfer or fluid flow or both. Texture surface(s) are produced by cold forming a specified configuration on the surface(s) of base strip material, prior to welding. The produced welded textured tubes may be used in boilers, superheaters, condensers, evaporators, heat exchangers, and other similar heat transfer apparatus in diameters up to and including 1.5 in. [38 mm] for various wall thicknesses up to and including 0.079 in. [2 mm]. 1.2 The tubing sizes and thicknesses usually furnished to this specification are 0.375 in. [10 mm] inside diameter (ID) to 1.5 in. [38 mm] outside diameter and 0.020 to 0.079 in. [0.5 to 2 mm], inclusive, in wall thickness. Tubing having other dimensions may be furnished provided such tubes comply with all other requirements of this specification. 1.3 Optional supplementary requirements are provided and, when one or more of these are desired, each shall be so stated in the order. 1.4 Several grades of austenitic, ferritic, martensitic and duplex stainless steels are included in this specification. Not all alloys are suitable for all conditions. Selection will depend upon design and service requirements. 1.5 The values stated in either inch-pound units or SI 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. The inch-pound units shall apply unless the “M” designation of this specification is specified in the order. 1.6 The following safety hazards statement pertains only to the test method and the Supplementary Requirements of this specification. A specific warning statement is given in the Supplementary Requirements. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.