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ASTM A53 Carbon Steel Seamless Pipe | Industrial Pipeline & Construction Applications
| ASTM A53 Grade A / Grade B Carbon Steel Seamless Pipe Details | ||
| Item | ASTM A53 Grade A | ASTM A53 Grade B |
| Standard | ASTM A53 / ASME SA53 | ASTM A53 / ASME SA53 |
| Material Type | Carbon Steel | Carbon Steel |
| Pipe Type | Seamless Steel Pipe | Seamless Steel Pipe |
| Strength Level | Standard Strength | Higher Strength |
| Yield Strength | ≥ 205 MPa (30,000 psi) | ≥ 240 MPa (35,000 psi) |
| Tensile Strength | ≥ 330 MPa (48,000 psi) | ≥ 415 MPa (60,000 psi) |
| Carbon Content | ≤ 0.25% | ≤ 0.30% |
| Manganese Content | ≤ 0.95% | ≤ 1.20% |
| Phosphorus (Max) | 0.05% | 0.05% |
| Sulfur (Max) | 0.05% | 0.05% |
| Weldability | Excellent | Excellent |
| Pressure Performance | Suitable for general pressure applications | Suitable for higher pressure and demanding applications |
| Common Usage | Construction, low-pressure piping, general industrial use | Oil & gas, mechanical, structural, industrial pipelines |
| Element | ASTM A53 Grade A | ASTM A53 Grade B |
| Carbon (C) | ≤ 0.25% | ≤ 0.30% |
| Manganese (Mn) | ≤ 0.95% | ≤ 1.20% |
| Phosphorus (P) | ≤ 0.05% | ≤ 0.05% |
| Sulfur (S) | ≤ 0.045% | ≤ 0.045% |
| Copper (Cu) (when specified) | ≤ 0.40% | ≤ 0.40% |
| Nickel (Ni) (when specified) | ≤ 0.40% | ≤ 0.40% |
| Chromium (Cr) (when specified) | ≤ 0.40% | ≤ 0.40% |
| Molybdenum (Mo) (when specified) | ≤ 0.15% | ≤ 0.15% |
| Mechanical Property | ASTM A53 Grade A | ASTM A53 Grade B |
| Yield Strength (Min.) | ≥ 205 MPa (30,000 psi) | ≥ 240 MPa (35,000 psi) |
| Tensile Strength (Min.) | ≥ 330 MPa (48,000 psi) | ≥ 415 MPa (60,000 psi) |
| Elongation (Min.) | ≥ 35% | ≥ 30% |
| Hardness | According to ASTM A53 requirements | According to ASTM A53 requirements |
| Flattening Test | Required | Required |
| Bending Test | Required | Required |
| Hydrostatic Test | Required | Required |
Performance Comparison
| Item | Grade A | Grade B |
| Strength Level | Standard strength | Higher strength |
| Pressure Resistance | Suitable for normal pressure applications | Better pressure-bearing capacity |
| Weldability | Excellent | Excellent |
| Durability | Reliable service performance | Higher load-bearing performance |
| Typical Use | General construction, low-pressure systems | Oil & gas, industrial pipelines, mechanical applications |
| ASTM A53 Seamless Pipe Size Table | |||
| NPS (Inch) | Outside Diameter (OD, mm) | SCH 40 Wall Thickness (mm) | SCH 80 Wall Thickness (mm) |
| 1/2" | 21.3 | 2.77 | 3.73 |
| 3/4" | 26.7 | 2.87 | 3.91 |
| 1" | 33.4 | 3.38 | 4.55 |
| 1-1/4" | 42.2 | 3.56 | 4.85 |
| 1-1/2" | 48.3 | 3.68 | 5.08 |
| 2" | 60.3 | 3.91 | 5.54 |
| 2-1/2" | 73 | 5.16 | 7.01 |
| 3" | 88.9 | 5.49 | 7.62 |
| 4" | 114.3 | 6.02 | 8.56 |
| 5" | 141.3 | 6.55 | 9.53 |
| 6" | 168.3 | 7.11 | 10.97 |
| 8" | 219.1 | 8.18 | 12.7 |
| 10" | 273 | 9.27 | 15.09 |
| 12" | 323.9 | 10.31 | 17.48 |
| 14" | 355.6 | 11.13 | 19.05 |
| 16" | 406.4 | 12.7 | 21.44 |
| 18" | 457.2 | 14.27 | 23.83 |
| 20" | 508 | 15.09 | 26.19 |
| 24" | 609.6 | 17.48 | 30.96 |
Contact Us
| Surface Finish | Description | Applications |
| Black Surface (Black Steel Finish) | Natural finish after manufacturing with a dark oxide layer. Provides basic protection during storage and transportation. | Construction, structural projects, general industrial piping |
| Oiled Surface | Applied with a light oil coating to prevent rust and improve storage protection. | Export transportation, mechanical and industrial applications |
| Varnished Surface | Coated with protective varnish to enhance corrosion resistance and surface appearance. | Building projects, infrastructure, general piping systems |
| Galvanized Surface (Hot-Dip Galvanized) | Zinc coating provides excellent corrosion resistance and longer service life. | Water pipelines, outdoor structures, fire protection systems |
| 3PE Anti-Corrosion Coating | Three-layer polyethylene coating offering strong protection against corrosion and moisture. | Oil & gas pipelines, underground transmission systems |
| FBE Coating (Fusion Bonded Epoxy) | Epoxy coating with strong adhesion and chemical resistance. | Oil, gas, water, and industrial pipeline projects |
| Painted Surface | Customized paint coating for improved protection and identification. | Industrial facilities, steel structures, engineering projects |
| Customized Finish | Surface treatment can be customized according to project requirements. | Special engineering and infrastructure applications |
| No. | Application Field | Core Features | Applicable Scenarios |
| 1 | Oil Gas Pipe Transmission | Transport oil, gas and petrochemical fluids | On-site oil and gas pipeline conveyance systems |
| 2 | Water Supply & Distribution | Safe water delivery with steady pressure tolerance | Urban water supply, water treatment, agricultural irrigation |
| 3 | Structural Construction | Superior strength and load-bearing capacity | Building frameworks, steel pillars, structural supporting components |
| 4 | Mechanical Engineering | Easy to cut, weld and machine | Mechanical fabrication, customized mechanical parts |
| 5 | Industrial Piping | Anti-corrosion for common industrial media | Fluid pipelines of chemical and processing plants |
| 6 | Power Generation | Fit for high-temperature and regular pipeline operation | Thermal power stations, public energy infrastructure |
| 7 | Fire Protection | Meet fire pipeline pressure and safety specifications | Building fire sprinkler and fire-fighting pipe networks |
| 8 | Civil Infrastructure | Outdoor wear resistance for civil projects | Bridges, traffic facilities, municipal public engineering |
| 9 | HVAC Systems | Stable circulation of heating and cooling water | Building heating, ventilation and air conditioning pipelines |
| 10 | Marine & Offshore Engineering | Resist coastal humidity and salt fog corrosion | Ports, docks, coastal and offshore construction projects |
Professional Supplier of ASTM A53 Seamless Steel Pipes
Royal Steel Group(Seamless Pipe Supplier): We are a leading supplier of ASTM A53 Grade A and B carbon steel Construction Pipe, widely used in construction, oil and gas, machinery, and general engineering.
Reliable Factory Supply Chain
Working closely with reputable steel mills ensures stable production capacity, consistent quality, reasonable prices, and on-time delivery.
Strict Quality Control
Each batch of products undergoes chemical composition testing, mechanical property testing, dimensional inspection, hydrostatic testing, and non-destructive testing (depending on the specific requirements).
Comprehensive Product Range
We offer steel pipes in various diameters, wall thicknesses, specifications, lengths, and surface treatments to meet diverse project needs.
Custom Processing Services
We support custom cutting, threading, beveling, hot-dip galvanizing, painting, and rust-resistant coating services.
International Standard Certifications
We provide complete documentation, including Material Testing Certificate (MTC), EN10204 3.1 certificate, SGS/BV IC reports, and quality documents.
Professional Export Experience
We are an experienced global steel supplier with industry-leading shipping expertise and customer service, dedicated to helping your business succeed.
Global Project Support
We serve clients in the construction, energy, infrastructure, pipeline, and industrial sectors worldwide.
1) Branch Office - Spanish-speaking support, customs clearance assistance, etc.
2) Over 5,000 tons of stock in stock, with a wide variety of sizes
3) Inspected by authoritative organizations such as CCIC, SGS, BV, and TUV, with standard seaworthy packaging
Royal Steel provides professional packaging and shipping solutions for ASTM A53 Grade A and B Carbon Steel Pipe, ensuring safe and reliable transport for projects worldwide.
Packaging:
High-strength steel strapping is used for easy handling and loading.
Plastic caps protect the pipe ends from damage and contamination.
Moisture-proof and rust-proof packaging is used for long-haul sea freight.
Each bundle of pipes is marked with dimensions, grade, quantity, heat number, and customer-specific requirements.
We can also provide customized packaging solutions based on your container loading and project needs.
Delivery:
We offer flexible shipping options, such as container shipping, bulk carrier shipping, and general cargo shipping.
Cargo is stacked using professional methods to prevent deformation and surface damage to the pipes.
We provide complete export documentation, including the Factory Inspection Certificate (MTC), inspection report, commercial invoice, packing list, and shipping documents. Read more
Streamlined logistics coordination ensures timely delivery of products to construction, oil and gas, machinery, and infrastructure project sites worldwide.
1. Are you a manufacturer of ASTM A53 seamless steel pipe?
Royal Steel Group is a global leader in ASTM A53 Grade A& Grade B seamless steel pipes for the construction, oil & gas, mechanical, and industrial applications across the world.
2. What are the grades and sizes of the ASTM A53 pipes you can sell?
We many sizes of Grade A / B pipe with different diameters, wall thickness, schedules and customized lengths.
3. Which quality documents can I obtain?
We offer EN10204 3.1 certificate, MTC, inspeaction report and TPI report if needed.
4. Can you custom make ASTM A53 pipes?
Yes,We provide customized cutting, threading, beveling, galvanizing, painting, anti-rust coating services etc.
5. How to control product quality and delivery time?
Tight quality control, professional export packing and global logistics support make the quality and delivery stable.
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