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Eastern Steel Manufacturing Co.,Ltd is a leading manufacturer and distributor of seamless steel pipe, welded steel pipe, OCTG products and fittings. We supply first-step processing, semi-finished parts and finished parts to help our clients meet fabrication requirements beyond their capacity or to improve operations by moving forward the pre-production processing.
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In this column you can find the steel pipe related articles you need, including industry trends, product standards and materials, and some technical guidelines.
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Eastern Steel Manufacturing Co.,Ltd not only improve product production and sales services, but also provide additional value-added services. As long as you need, we can complete your specific needs together.
Projects
Many years of large-scale project experience in various fields（Oil & Gas, Construction, Power Energy, Marine & Offshore, Water Treatment, Exploration & Drilling Services, Pipeline & Petrochemical etc.）, professional project team is responsible from receiving until the end of the project.
ASTM A53/A53M covers seamless and welded black and hot-dipped galvanized steel pipe in NPS 1/8 to NPS 26. The specification includes Type F, Type E and Type S pipe in Grades A and B for mechanical and pressure applications, including steam, water, gas and air lines.
ASTM A53/A53M is a carbon steel pipe specification for mechanical and pressure applications. It covers seamless and welded pipe in Grades A and B, with Type S, Type E and Type F manufacturing classifications.
ASTM A53 pipe is classified into three types according to the manufacturing method. Type F, Type E and Type S are available in Grades A and B.
ASTM A53 — Pipe Types and Manufacturing Methods
| Type | Manufacturing Method | Grade |
|---|---|---|
| Type F | Furnace-butt-welded | A, B |
| Type E | Electric-resistance-welded (ERW) | A, B |
| Type S | Seamless | A, B |
Grade A and Grade B have different specified mechanical properties. Grade B has a minimum tensile strength of 415 MPa (60,000 psi) and a minimum yield strength of 240 MPa (35,000 psi), compared with 330 MPa (48,000 psi) and 205 MPa (30,000 psi) for Grade A.
ASTM A53 Grade B has higher specified minimum tensile and yield strengths than Grade A. Grade A is preferred for close coiling and cold bending applications.
ASTM A53 — Mechanical Property Comparison (Grade A vs. Grade B)
| Mechanical Property | Grade A | Grade B |
|---|---|---|
| Tensile Strength, min. | 330 MPa (48,000 psi) | 415 MPa (60,000 psi) |
| Yield Strength, min. | 205 MPa (30,000 psi) | 240 MPa (35,000 psi) |
Elongation in 2 in. (50 mm) Calculated according to pipe dimensions and test specimen area Calculated according to pipe dimensions and test specimen area
The chemical composition limits for ASTM A53 pipe vary by type and grade. The values below are maximum limits.
ASTM A53 — Chemical Composition Requirements
| Pipe Type | Grade | C max. | Mn max. | P max. | S max. | Cu + Ni + Cr + Mo + V |
|---|---|---|---|---|---|---|
| Type S (Seamless) | A | 0.25% | 0.95% | 0.050% | 0.045% | ≤ 1.00%* |
| Type S (Seamless) | B | 0.30% | 1.20% | 0.050% | 0.045% | ≤ 1.00%* |
| Type E (ERW) | A | 0.25% | 0.95% | 0.050% | 0.045% | ≤ 1.00%* |
| Type E (ERW) | B | 0.30% | 1.20% | 0.050% | 0.045% | ≤ 1.00%* |
| Type F (Furnace-Welded) | A and B | 0.30% | 1.20% | 0.050% | 0.045% | ≤ 1.00%* |
Individual limits are Cu ≤ 0.40%, Ni ≤ 0.40%, Cr ≤ 0.40%, Mo ≤ 0.15%, and V ≤ 0.08%. For each 0.01% reduction in carbon below the specified maximum, the permitted manganese content may be increased by 0.06%, subject to the limits specified in ASTM A53/A53M.
ASTM A53 pipe dimensions are specified by nominal pipe size (NPS), outside diameter (OD) and nominal wall thickness.
Nominal Pipe Size (NPS): 1/8–26
Outside Diameter (OD): 10.3–660 mm
Wall Thickness: Varies by NPS and schedule
Pipe Schedule: Varies according to pipe size and wall thickness
For detailed NPS, DN, outside diameter, wall thickness and weight data, see our Seamless Steel Pipe Size Chart.
For a comparison of pipe schedules and wall thicknesses, see our Carbon Steel Pipe Schedule Chart.
ASTM A53, ASTM A106 and ASTM A500 cover different pipe and tubing requirements. The main differences are their intended applications, product forms and service conditions.
ASTM A53 vs. A106 vs. A500 — Feature Comparison
| Feature | ASTM A53 | ASTM A106 | ASTM A500 |
|---|---|---|---|
| Main Application | Mechanical and pressure applications | High-temperature service | Structural applications |
| Product Type | Seamless and welded pipe | Seamless pipe | Welded and seamless tubing |
| Shapes | Round | Round | Round, square, rectangular and special shapes |
| Typical Uses | Water, gas, steam and air lines | High-temperature piping | Buildings, bridges and structural frames |
| Grade B Yield Strength, min. | 240 MPa | 240 MPa | 290 MPa |
Q1. Is ASTM A53 seamless or welded?
ASTM A53 covers both seamless and welded pipe, including ERW and furnace-butt-welded pipe.
Q2. What is the yield strength of ASTM A53 Grade B?
ASTM A53 Grade B has a minimum yield strength of 240 MPa (35,000 psi) and a minimum tensile strength of 415 MPa (60,000 psi).
Q3. Can ASTM A53 be used for high-temperature service?
ASTM A53 can be used for mechanical and pressure applications, including steam, water, gas and air lines. ASTM A106 is specified for seamless carbon steel pipe for high-temperature service.
ASTM A53 Gr.B Seamless Steel Pipe
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