ASTM A36 Seamless Steel Pipe is a carbon structural steel pipe widely used in construction, mechanical engineering, and industrial structural applications. It offers reliable strength, good weldability, and stable mechanical performance, making it suitable for structural frameworks, supports, and general engineering projects.
Material Type :
A36 Carbon SteelOuter Diameter Range :
21.3mm – 630mmWall Thickness Range :
2.0mm – 60mmCustomizable :
YesOrder(MOQ) :
2TSpecifications
ASTM A36 Seamless Steel Pipe is manufactured from high-quality carbon steel and produced through advanced hot rolling or cold drawing processes to ensure uniform wall thickness, high strength, and reliable durability. The material conforms to ASTM A36 standards and is known for its excellent machinability, weldability, and cost-effectiveness.
This type of carbon steel pipe is commonly used in structural applications such as construction frameworks, industrial platforms, machinery components, and general engineering projects. Due to its stable mechanical properties and good formability, A36 steel pipes are also suitable for fabrication and welding operations.
ASTM A36 seamless pipes are available in a wide range of sizes and wall thicknesses to meet different structural and industrial requirements. Surface finishes such as black surface, pickled surface, or protective coatings can be provided according to project specifications.
ASTM A36 Seamless Steel Pipe is one of our core strength products. We maintain substantial inventory to ensure rapid delivery and can also customize extra-large diameter seamless pipes according to your specific requirements. Additionally, we provide comprehensive services including spectroscopic analysis, mechanical property testing, pressure testing, and non-destructive testing (NDT).
| Grade | Grade Equivalent | Mechanical Properties | Size Range | Chemical Composition (Typical, %) |
| A36 | ASTM A36 EN S235JR |
Tensile 400–550 MPa Yield ≥250 MPa Elongation ≥20% |
OD 10–610 mm WT 2–50 mm Length ≤12 m |
C≤0.25 Mn ≤1.20 P≤0.040 S≤0.050 Si≤0.40 |
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Note: If you do not find a A36 seamless steel pipe that meets your requirements or is suitable for your customer’s project, please contact our manager sales consultant (Email: stsalesman4@stmetal001.com) and send us your specifications and technical parameter files to obtain Customized quotation plan. |
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FAQs
Q: What types and standards of carbon steel do you mainly supply?
A: We mainly supply a wide range of carbon steel products including seamless and welded steel pipes, steel plates, coils, and bars. Common carbon steel grades include A36, A106, A53, API 5L, and S355, which are widely used in construction, machinery, and pipeline engineering. All carbon steel products comply with international standards such as ASTM, API, EN, and JIS. We can also provide corresponding material test certificates (MTC) and support customized specifications according to customer project requirements.
Q: Can you provide special specifications or non-standard customization? For example, extra-wide plates or pipes with specific wall thicknesses?
A: Of course. One of our advantages is our flexible customization capabilities. We can provide customized size cutting, special thicknesses, and special surface treatments (such as 2B, BA, No.4 brushed finish, mirror finish) based on your drawings or requirements. Whether it's a small trial order or a large-volume purchase, we can meet your needs.
Q: How do you guarantee the quality and consistency of materials? Do you have quality certifications?
A: Quality is our lifeline. We use direct supply from large steel mills to ensure material traceability. Each shipment comes with a Material Quality Certificate (MTC). We have our own quality control team that conducts random checks on material composition, dimensional tolerances, surface finish, and mechanical properties. Our factory is also ISO 9001:2015 quality management system certified.
Q: What are your delivery times and logistics solutions for overseas customers?
A: For standard-specification in-stock products, we can complete preparation and shipment within 7-14 days. Delivery times for customized products will be determined through negotiation based on the specific process. We have established international logistics partners who can arrange full container load (FCL), less-than-container load (LCL), or air freight according to your needs, and provide various trade terms such as EXW, FOB, CIF, and DDP, with door-to-door service.
Q: As a new customer, how do I begin cooperation? Can you provide samples for testing?
A: The cooperation process is very smooth: 1) You provide specific requirements (brand, specifications, quantity, standards); 2) We provide a quotation and technical advice; 3) After confirmation, we arrange the contract and payment; 4) Production/pickup and quality inspection; 5) Shipment and provision of documentation. We encourage sample testing. For serious customers, we can provide small-size samples to ensure that the materials fully meet your processing and application requirements.
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Note: If you do not find a A36 seamless steel pipe that meets your requirements or is suitable for your customer’s project, please contact our manager sales consultant (Email: stsalesman4@stmetal001.com) and send us your specifications and technical parameter files to obtain Customized quotation plan. |
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