Technical features and applications of ASTM/ASME A/SA 672 pipes
The ASTM/ASME A/SA 672 specification regulates the requirements for steel pipes manufactured by electric-fusion welding with filler metal. Plates made from various grades of carbon and low-alloy steels are used as raw materials, which ensures a variety of strength characteristics for the finished products. Products supplied by EV Group China are designed for operation in high-pressure engineering systems at moderate temperature ranges.
The technological production process may include or exclude additional heat treatment, depending on the required strength class and the specifics of the final product. The standard provides for additional testing to ensure complete reliability during operation under critical conditions.
The developed product range includes pipes with an outer diameter from 400 mm (16 inches) and a wall thickness of up to 75 mm (3 inches). It is possible to manufacture products of non-standard sizes while complying with all regulatory requirements of the specification.
Classification and marking
The designation system in the A/SA 672 standard is based on two key parameters:
- Material class: determines the chemical composition of the initial plate steel.
- Product class: regulates the type of heat treatment performed, the necessity of radiographic inspection of the welded joint, and the performance of hydrostatic pressure tests.
Important: when selecting materials for a specific project, it is necessary to consider the operating temperature range, based on the principles outlined in the A20/A20M standard.
The application of SI and imperial measurement standards is carried out independently. Mixing parameters from different systems is not allowed to prevent non-compliance with regulatory tolerances.