ASTM A182 and ASME SA182 are both specifications for forged or rolled alloy-steel pipe flanges, forged fittings, and valves and parts for high-temperature service. These specifications cover materials such as carbon steel, alloy steel, and stainless steel.
The “ASTM” in ASTM A182 stands for the American Society for Testing and Materials, while the “ASME” in ASME SA182 stands for the American Society of Mechanical Engineers. Both organizations develop and maintain standards for a wide range of products used in various industries.
The primary difference between ASTM A182 and ASME SA182 is that ASTM A182 is a standard specification for materials, while ASME SA182 is a standard specification for materials and the manufacturing process. This means that ASME SA182 includes additional requirements for the manufacturing of the products covered by the specification, such as heat treatment, testing, and inspection.
Overall, ASTM A182 and ASME SA182 are similar specifications that cover similar products and materials. However, the specific requirements for each may differ depending on the intended application and other factors.
ASTM A182 and ASME SA182 specifications provide dimensional standards for forged or rolled alloy-steel pipe flanges, forged fittings, valves, and parts for high-temperature service. The dimensions covered by these specifications include the following:
- Flange dimensions: ASTM A182 and ASME SA182 cover the dimensional standards for flanges with nominal sizes ranging from 1/2 inch to 24 inches. These standards specify the dimensions such as the diameter of the flange, the thickness of the flange, the bore size, and the bolt-hole spacing.
- Fitting dimensions: The dimensions of forged fittings, including tees, elbows, reducers, and caps, are specified in ASTM A182 and ASME SA182. These specifications cover fittings with nominal sizes ranging from 1/8 inch to 4 inches, and the dimensions specified include the overall length, the center-to-end dimensions, and the wall thickness.
- Valve dimensions: The dimensions of valves covered by ASTM A182 and ASME SA182 include the size, the body and bonnet wall thickness, the end connection type, and the overall length.
It is important to note that while ASTM A182 and ASME SA182 provide dimensional standards, these specifications do not cover every possible size and shape of the products. Manufacturers may need to consult additional standards or custom dimensions to meet specific requirements.