YC/T 5139-1993 Hot rolled steel strap for pressure containers
This standard is issued by the metallurgical industry standardization technical committee, according to the provisions of the Chinese metallurgical industry standard comprehensive revision project.
This standard is an immature standard released in 1992, after review and revision in 2019, the standard number is changed to YC/T 5139-1993, and the contents of this standard are notified as follows.
The standard is divided into 6 chapters and 9 annexes, covering product classification, order content, size, shape and tolerance, sampling, test methods, inspection rules, packaging, transportation and storage, inspection documents, etc.
The standard applies to hot rolled steel plates with a thickness of more than 6.5mm (including 6.5mm) for welding into pressure vessels under various working conditions.
This standard has unified the product name and size, shape and tolerance, sampling, inspection methods and inspection rules for hot rolled steel bands used for manufacturing various pressure vessels, to better serve the production and use of pressure vessels.
It is worth noting that this standard stipulates that when the size of the pressure vessel is larger than 10-320 mm, the steel must pass the ultrasonic flaw detection or magnetic particle flaw detection; when the size of the pressure vessel is larger than 10-20mm, the steel must pass the vertical eddy current flaw detection or other non-destructive nondestructive testing.methods.
In addition, this standard also stipulates that the allowable negative deviation of the actual thickness of the product should not exceed the nominal thickness greater than 1.5%, and the maximum allowable negative deviation should not exceed 0.5mm; the inner and outer surface permissible negative deviations of arc length and width should not exceed 0.50%, and the maximum allowable negative deviations should not exceed 1.00mm.
It is suitable for hot rolled steel straps used in the production and use of pressure vessels. It is recommended that enterprises that manufacture or use such products and relevant enterprises should study this standard carefully.
该标准由冶金行业标准化技术委员会提出，*按照中国冶金行业标准综合修订项目的规定而制定。
本标准是1992年首次发布的一项不成熟的标准，经2019年的审查与修订后，其标准号改为YC/T 5139-1993，本标准的内容经通报如下。
本标准共分为6章9附录，内容涵盖产品分类、订货内容、尺寸、外形和公差、取样、试验方法、检验规则、包装、运输与保存、检验文件等。
本标准适用于用于在各种工作条件下焊接成压力容器的厚度大于6.5mm(包括6.5mm)的热轧钢板。
本标准统一了生产各种压力容器用热轧钢带的产品名称及尺寸、外形和公差、取样、检验方法以及检验规则，以更好地服务压力容器的生产与使用。
值得注意的是，本标准规定在压力容器的尺寸大于10-320mm时，钢材必须进行超声波探伤缺陷检测或磁粉探伤缺陷检测；在压力容器的尺寸大于10-20mm时，钢材必须进行垂直涡流探伤法或其它无损检测。方法。
此外，本标准还规定了产品实际厚度允许负偏差不应超过公差厚度大于1.5%，最大允许负偏差不应超过0.5mm；内外表面允许负偏差曲线长宽不应超过0.50%，最大允许负偏差不应超过1.00mm。
本标准适用于生产和使用压力容器的热轧钢带，建议生产或使用此类产品的企业及有关企业应仔细学习本标准。
