Standard Special Shaped Steel Tube is a steel tube manufactured with non-circular cross-sectional profiles such as square, rectangular, oval, or other standard structural shapes. It is widely used in construction structures, mechanical manufacturing, transportation equipment, and industrial fabrication.
Material Type :
Carbon Steel / Alloy Steel / Stainless SteelWall Thickness Range :
1.0mm – 20mmLength Range :
1m – 12mOuter Size Range :
10mm – 200mmProcess :
Cold drawn / Cold rolled / Hot finishedSection Shape :
Square, Rectangular, Oval, Triangular, Hexagonal, Octagonal, Custom Special ShapesCustomizable :
YesOrder(MOQ) :
2TSpecifications
Standard special shaped steel tubes are designed with non-round cross-sectional profiles, including square, rectangular, oval, and other structural shapes. These profiles provide better adaptability for structural and mechanical applications that require specific geometric designs.
The tubes are typically manufactured through hot rolling, cold drawing, or welding processes, ensuring consistent dimensions, reliable mechanical strength, and stable structural performance.
Compared with traditional round steel tubes, special shaped steel tubes offer improved structural efficiency, better load distribution, and optimized space utilization, making them suitable for a variety of engineering designs.
Standard special shaped steel tubes are widely used in construction frameworks, mechanical equipment structures, transportation systems, furniture manufacturing, and industrial fabrication projects where specific tube shapes are required for structural or functional purposes.
Standard Special Shaped Steel Tube 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, %) |
|---|---|---|---|---|
| 10# | AISI 1010 / EN 1.0301 | Tensile ≥335 MPa
|
Special-shaped (oval/triangle/hex/rectangle)
|
C 0.07–0.14
|
| 20# | AISI 1020 / EN 1.0402 | Tensile ≥390 MPa
|
Special-shaped (oval/triangle/hex/rectangle)
|
C 0.17–0.24
|
| 45# | AISI 1045 / EN 1.0503 | Tensile ≥600 MPa
|
Special-shaped (oval/triangle/hex/rectangle)
|
C 0.42–0.50
|
| Q235B | EN S235JR / A36 | Tensile 375–500 MPa
|
Special-shaped (oval/triangle/hex/rectangle)
|
C≤0.22
|
| Q355B | EN S355JR / 16Mn | Tensile 470–630 MPa
|
Special-shaped (oval/triangle/hex/rectangle)
|
C≤0.20
|
| 20Cr | AISI 5120 / EN 1.7015 | Tensile ≥685 MPa
|
Special-shaped (oval/triangle/hex/rectangle)
|
C 0.18–0.24
|
| 40Cr | AISI 5140 / EN 1.7035 | Tensile ≥980 MPa
|
Special-shaped (oval/triangle/hex/rectangle)
|
C 0.37–0.45
|
| 42CrMo | AISI 4140 / EN 1.7225 | Tensile ≥1080 MPa
|
Special-shaped (oval/triangle/hex/rectangle)
|
C 0.38–0.45
|
| 304 | UNS S30400 / EN 1.4301 | Tensile ≥515 MPa
|
Special-shaped (oval/triangle/hex/rectangle)
|
C≤0.08, Cr 18.0–20.0
|
| 316L | UNS S31603 / EN 1.4404 | Tensile ≥485 MPa
|
Special-shaped (oval/triangle/hex/rectangle)
|
C≤0.03, Cr 16.0–18.5
|
|
Note: If you do not find a Standard Special Shaped Steel Tube 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.
|
Note: If you do not find a Standard Special Shaped Steel Tube 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. |
Standard Special Shaped Steel Tube is a steel tube manufactured with non-circular cross-sectional profiles such as square, rectangular, oval, or other standard structural shapes. It is widely used in construction structures, mechanical manufacturing, transportation equipment, and industrial fabrication.
Details
Custom Special Shaped Steel Tube is a steel tube manufactured according to specific design requirements with non-standard cross-sectional shapes. It is widely used in construction structures, machinery manufacturing, transportation equipment, and specialized engineering applications that require customized tube profiles.
Details
Cold Drawn Precision Special Tube is a high-accuracy steel tube manufactured through advanced cold drawing processes with customized special cross-section shapes. It is widely used in precision machinery, automotive components, engineering structures, and industrial equipment requiring high dimensional accuracy and complex tube profiles.
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