Technical specifications and purpose of pipes according to the ASTM/ASME A/SA 953 standard
The ASTM/ASME A/SA 953 specification regulates the production of seamless and welded pipes made from austenitic chromium-nickel alloys with the addition of silicon. EV Group China products that comply with this standard are oriented toward complex engineering tasks requiring high corrosion resistance when operating in extreme temperature conditions. The alloy composition is characterized by a chromium content of less than 10.50%.
Standard dimensional parameters for pipes supplied by EV Group China include:
- Inside diameter: 1/4 inch (6.4 mm) and larger.
- Nominal wall thickness: 0.020 inches (0.51 mm) and thicker.
It is important to note that mechanical testing is not mandatory for tubular products with an inside diameter of less than 1/8 inch (3.2 mm) or a wall thickness of less than 0.015 inches (0.38 mm).
Processing features and application
The silicon-containing alloys included in this specification possess unique operational properties due to their chemical composition. Specialists at EV Group China emphasize that working with such materials requires strict control of technological processes, especially regarding heat treatment and welding, to ensure the design characteristics of the finished product.
When designing piping systems, it should be noted that values in SI units and the inch-pound system are independent standards. Combining parameters from different measurement systems is not permitted, as this may lead to deviations from ASTM/ASME regulatory requirements.