Introduction to ASTM A53 standard
ASTM A53 is a standard developed by the American Society for Testing and Materials (ASTM). It is mainly used to specify the manufacturing, testing, performance and other requirements of carbon steel and low alloy steel pipes for pipelines. The following is a detailed introduction to the ASTM A53 standard:
1. Application scope: ASTM A53 standard is suitable for steel pipes commonly used for low-pressure liquid transportation, machine manufacturing and structural purposes. It is widely used in water supply, gas, air conditioning, heating and other low-pressure fluid delivery systems as well as buildings, bridges, shipbuilding, wellbores and other structural fields.
2. Steel pipe specifications: ASTM A53 standard stipulates the outer diameter, wall thickness, length and other parameters of steel pipes, and classifies different grades of steel pipes. These parameters are crucial to ensure the suitability and safety of steel pipes.
3 Galvanized steel pipes: ASTM A53 also covers relevant standards for galvanized steel pipes. Galvanized steel pipes are divided into different grades in the ASTM A53 standard, such as A, B, C, etc. Each grade has different chemical composition and mechanical performance requirements. The galvanized layer should meet the minimum thickness requirements specified in the standard, have good appearance and adhesion, and be difficult to peel off.
CHEMICAL COMPOSITION OF ASTM A53 PIPES
Elements | Type S (Seamless) Grade B | Type E (ERW) Grade B |
Carbon max. % | 0.30* | 0.3 |
Manganese % | 1.2 | 1.2 |
Phosphorous, max. % | 0.05 | 0.05 |
Sulfur, max. % | 0.045 | 0.045 |
Copper, max.% | 0.4 | 0.4 |
Nickel, max. % | 0.4 | 0.4 |
Chromium, max. % | 0.4 | 0.4 |
Molybdenum, max. % | 0.15 | 0.15 |
Vanadium, max. % | 0.08 | 0.08 |
MECHANICAL PROPERTIES OF ASTM A53 PIPES
Types and Grades | Min. Tensile Strength | Min. Yield Strength |
Type E and S – ASTM A53 Grade A | 330Mpa / 48000psi | 205Mpa / 30000psi |
Type F – ASTM A53 Grade A | 330Mpa / 48000psi | 205Mpa / 30000psi |
THICKNESS AND MASS TOLERANCE OF ASTM A53 PIPES
Item | O.D. | Over | Under |
Outside Diameter | NPS 1/8 to 1-1/2, DN 6 to 40 | ±0.4mm | ±0.4mm |
NPS 2 and up, DN 50 and up | ±1% | ±1% | |
Wall Thickness at Any Point | – | ±12.5% | |
Weight | ±10% | ±10% |