Custom Profile Special Shaped Steel Tube is a customized steel tube manufactured according to specific profile designs and technical requirements, offering flexible solutions for complex structural and industrial applications. It is widely used in construction, machinery manufacturing, automotive components, and engineering projects.
Material Type :
Carbon Steel, Alloy Steel, Stainless Steel (Q235B, Q355B, 45#, 40Cr, 304, 316L)Wall Thickness Range :
1mm – 20mmLength Range :
500mm – 12000mm (Customized)Outer Size Range :
10mm – 400mm (Custom Profiles)Tolerance :
±0.05mm – ±0.1mm (High Precision)Customizable :
YesOrder(MOQ) :
2TSpecifications
Custom profile special shaped steel tubes are produced based on customer drawings, specifications, or application requirements, with various shapes including oval, elliptical, triangular, hexagonal, D-shaped, and other custom profiles. Advanced forming and processing technologies ensure precise dimensions and consistent quality.
These tubes offer excellent structural strength, dimensional accuracy, and material versatility, making them suitable for applications that require specialized designs and optimized performance. Various carbon steel, stainless steel, and alloy steel materials can be supplied according to project needs.
Custom profile special shaped steel tubes are widely used in architectural structures, mechanical equipment, transportation systems, furniture manufacturing, automotive components, and industrial fabrication projects, where unique shapes, customized dimensions, and reliable performance are essential.
Custom Profile 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, %) |
|---|---|---|---|---|
| Q235B Carbon Steel | GB Q235B
|
Tensile 370–500 MPa
|
Custom Shapes: Square, Rectangular, Oval, Triangular, Hexagonal, Octagonal, D-shaped, U-shaped, Custom Profile
|
C≤0.22, Si≤0.35
|
| Q355B Low Alloy High Strength | GB Q355B
|
Tensile ≥470 MPa
|
Custom Shapes: Square, Rectangular, Oval, Triangular, Hexagonal, Octagonal, D-shaped, U-shaped, Custom Profile
|
C≤0.24, Si≤0.55
|
| 45# High Quality Carbon Steel | GB 45#
|
Tensile ≥600 MPa
|
Custom Shapes: Square, Rectangular, Oval, Triangular, Hexagonal, Octagonal, D-shaped, U-shaped, Custom Profile
|
C 0.42–0.50, Si≤0.37
|
| 20# Precision Carbon Steel | GB 20#
|
Tensile 415–550 MPa
|
Custom Shapes: Square, Rectangular, Oval, Triangular, Hexagonal, Octagonal, D-shaped, U-shaped, Custom Profile
|
C 0.17–0.23, Si≤0.37
|
| 40Cr Alloy Steel | GB 40Cr
|
Tensile ≥980 MPa
|
Custom Shapes: Square, Rectangular, Oval, Triangular, Hexagonal, Octagonal, D-shaped, U-shaped, Custom Profile
|
C 0.37–0.44, Si≤0.37
|
| ASTM A500 Grade C Structural | ASTM A500 Gr.C
|
Tensile ≥400 MPa
|
Custom Shapes: Square, Rectangular, Oval, Triangular, Hexagonal, Octagonal, D-shaped, U-shaped, Custom Profile
|
C≤0.23, Si≤0.40
|
| ASTM A513 Grade 1020 Welded | ASTM A513 Gr.1020
|
Tensile 380–520 MPa
|
Custom Shapes: Square, Rectangular, Oval, Triangular, Hexagonal, Octagonal, D-shaped, U-shaped, Custom Profile
|
C 0.18–0.23, Si≤0.30
|
| 304 Stainless Steel | UNS S30400
|
Tensile ≥515 MPa
|
Custom Shapes: Square, Rectangular, Oval, Triangular, Hexagonal, Octagonal, D-shaped, U-shaped, Custom Profile
|
C≤0.08, Cr 18.0–20.0
|
| 316 Stainless Steel | UNS S31600
|
Tensile ≥515 MPa
|
Custom Shapes: Square, Rectangular, Oval, Triangular, Hexagonal, Octagonal, D-shaped, U-shaped, Custom Profile
|
C≤0.08, Cr 16.0–18.5
|
| 304L Low Carbon Stainless Steel | UNS S30403
|
Tensile ≥485 MPa
|
Custom Shapes: Square, Rectangular, Oval, Triangular, Hexagonal, Octagonal, D-shaped, U-shaped, Custom Profile
|
C≤0.03, Cr 18.0–20.0
|
| 316L Low Carbon Stainless Steel | UNS S31603
|
Tensile ≥485 MPa
|
Custom Shapes: Square, Rectangular, Oval, Triangular, Hexagonal, Octagonal, D-shaped, U-shaped, Custom Profile
|
C≤0.03, Cr 16.0–18.5
|
| Q420B High Strength Low Alloy | GB Q420B
|
Tensile ≥520 MPa
|
Custom Shapes: Square, Rectangular, Oval, Triangular, Hexagonal, Octagonal, D-shaped, U-shaped, Custom Profile
|
C≤0.20, Si≤0.55
|
|
Note: If you do not find a Custom Profile 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 Custom Profile 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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