Pipeline Works
- Carbon & Carbon Alloy Steel
- Stainless Steel
- Copper & Nickel Alloy
- Heat Efficiency Tubes
- Pipe Fittings
- Pipe Flanges
- Gasket, Stud Bolt &Nut
- Industrial Valves
01
A53/A53M Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless
Ordering Information
Buyers must specify:
- Standard designation (A53/A53M)
- Type (F, E, or S) and Grade (A or B)
- Size (NPS or DN) and schedule/thickness
- Length (random or specific)
- End finish (plain, threaded, bevelled, etc.)
- Coating (if required, e.g., galvanized)
- Additional testing (e.g., hydrostatic, nondestructive examination)
Steel Grades and Chemical Composition
- Grade A: Minimum tensile strength 330 MPa (48 ksi), yield strength 205 MPa (30 ksi).
- Grade B: Minimum tensile strength 415 MPa (60 ksi), yield strength 240 MPa (35 ksi).
- Carbon content: ≤0.25% (Grade B), ≤0.30% (Grade A).
Mechanical Properties
- Tensile and yield strength: As per grade requirements.
- Bend test: Required for Type F and E pipes < NPS 4.
- Flattening test: For seamless and ERW pipes.
- Hydrostatic test: Mandatory for all pipes unless replaced by nondestructive testing (NDT).
Inspection & Testing Requirements
- Hydrostatic testing: Minimum test pressure = 2.4 MPa (350 psi) for ≤ NPS 3 or higher as specified.
- Nondestructive testing (NDT): Permitted as an alternative to hydrostatic testing for Types E and S.
- Visual inspection: No defects affecting performance.
- Certification: Mill test reports (MTRs) must be provided upon request.
Coating (Optional)
- Galvanized pipes: Must comply with ASTM A53 coating weight and adhesion requirements.
Marking Requirements
Pipes must be marked with:
- Manufacturer’s name or trademark.
- ASTM A53/A53M, type (F, E, S), grade (A/B), size, and heat number.
- Coating designation (if applicable).
Key Notes
- Dimensional standards: Pipes conform to ASME B36.10M (sizes and schedules).
- Threading: If threaded, must comply with ASME B1.20.1.
This standard is widely used in construction, oil & gas, and low-pressure systems. For critical applications, stricter standards (e.g., ASTM A106 for high-temperature service) may be preferred.
Want to order the same ? Contact us Now to send your request!
