ASTM A36 is a carbon structural steel standard issued by the American Society for Testing and Materials. ASTM A36 is not specifically for steel pipes but covers carbon steel products including pipes (structural sections, plates and bars, etc.). It is commonly used in Bridges, buildings and general structural applications.

The chemical composition of ASTM A36 carbon steel pipes

According to the ASTM A36/A36M standard, the chemical composition (mass percentage) of A36 carbon steel pipe is as follows:

Standard: ASTM A36
Grade: B
Process: SMLS
Carbon (C) : ≤0.30
Manganese (Mn) : ≤0.29-1.06
Phosphorus (P) : ≤0.035
Sulfur (S) : ≤0.035
Silicon (Si) : ≥0.10
Chromium (Cr) : ≤0.40
Copper (Cu) : ≤0.40
Nickel (Ni) : ≤0.40

Manufacturing standards and specifications

Execution standard: ASTM A36/A36M-03a
Pipe form: It can be made into seamless pipes or welded pipes.
Common outer diameter range: 355.6-1626 mm; Wall thickness: 8-50 mm; The length can reach 12 meters (with slight variations depending on the supplier).
Surface treatment: Black pipe, sandblasting, oil coating, anti-corrosion coating (such as epoxy, coal tar, 3PE, etc.) can be customized according to project requirements.

Comparison of mechanical properties

ASTM A36 Grade A: Tensile strength (min) : 330Mpa; Yield strength (min) : 205Mpa
ASTM A36 Grade B: Tensile strength (min) : 415Mpa; Yield strength (min) : 240Mpa
ASTM A36 Grade C: Tensile strength (min) : 485Mpa; Yield strength (min) : 275Mpa

Comparison with other standards

ASTM A53 Grade B
Main application: Low-pressure fluid transportation
Yield strength: ≥240Mpa

ASTM A106 Grade B
Main application: Transportation of high-temperature fluids
Yield strength: ≥240Mpa

Application scenarios

ASTM A36 carbon steel pipes are widely used due to their excellent comprehensive performance in:
Bridges and building structures: load-bearing components, steel structure columns and beams, etc.
Mechanical manufacturing: It is mostly used for heavy equipment parts, brackets, frames, etc.
General structural uses: light factory buildings, warehouses, pipe gallery supports, etc.

Procurement and Supply

CENTRAL STEEL can provide seamless, straight seam and spiral welded varieties of A36 carbon steel pipes, and provide corresponding material certificates (MTR/CMTR) and flaw detection reports to meet the requirements of project quality acceptance.