Custom Roll-Formed Steel Channel Sections

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Basic Information

Model NO.

Special Shaped

Type

Seamless

Technique

Cold Drawn or Cold Rolled

Material

Carbon and Alloy

Surface Treatment

Oiled

Usage

Machinery Industry, Special Purpose

Section Shape

Special Section

Length

Customized

Delivery Terms

EXW/Fob/CIF/CFR

Standard

ASTM JIS GB

Delivery Time

20-35 days

MOQ

1 Ton

HS Code

7304900000

Capacity

50000 Ton/Year

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Product Description

Special-shaped tube (or special-section tube) refers to any steel or metal tubing with a cross-section other than standard round, such as square, rectangle, oval, hexagonal, D-shape, or custom profiles.

Common Shapes

Polygonal: Square, rectangular, triangular, hexagonal, octagonal.
Curved/Deformed: Oval, flat oval, D-shaped, semi-circular, fan-shaped.
Complex: Trapezoidal, lemon shaped, with splines, with fins.

Polygonal

Curved/Deformed

Complex

Key Benefits

Structural Efficiency: Larger moment of inertia and section modulus provide greater resistance to bending and torsion.
Functional Design: Integrated pathways for wiring or components.
Aesthetic Appeal: Unique visual elements for architectural and decorative use.
Material Saving: Reduces overall structural weight, lowering material costs.

Main Applications

Construction: Handrails, balustrades, door/window frames.
Machinery: Conveyor systems, agricultural equipment, tool components.
Automotive: Chassis, body structures, specialized vehicle parts.
Aerospace & Marine: High-strength, lightweight components.

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Technical Specifications

Parameter		Details
Type	Seamless/Welded	Technique	Cold drawn/rolled
Dimensional Deviation	Shaped:±0.2mm Round:±0.05mm	Curvature	≤3mm/m; ≤0.3%L
Allow Twist value	H=Sinα(A-2R)	A range	A≤30mm,H≤1.5mm/m; A>30~75mm,H≤2.0mm/m
Material	Carbon or Alloy	Processes	Cutting, punching, CNC turning, grinding

Mechanical Properties (Heat-Treated State)

Steel Grade	Tensile Strength (Rm/Mpa)	Yield Strength (Rel/Mpa)	Elongation (A/%)
10	≥ 335	≥ 205	≥ 24
20	≥ 410	≥ 245	≥ 20
45	≥ 590	≥ 335	≥ 14
Q235B	370~500	≥ 235	≥ 25
Q345B	470~630	≥ 345	≥ 20

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Production Capabilities

Specializing in the production of steel tubes/pipes for more than 30 years, our facilities cover advanced production lines for seamless steel pipes, cold-drawn pipes, precision welded pipes, and complex special-shaped profiles.

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Frequently Asked Questions

Are you a manufacturer or a trading company?

We are a professional manufacturer of steel pipes with over 30 years of experience. We also operate a technical trade division to provide a wide range of steel products to meet diverse customer requirements.

What is your typical delivery time?

Our standard delivery time is 20-35 days. We are committed to on-time delivery regardless of market price fluctuations.

Do you provide samples? Is there a cost?

Yes, we provide samples for free. However, the freight cost is covered by the customer. This freight amount is typically returned or credited once a formal cooperation begins.

How can I get a quotation quickly?

Please provide your detailed requirements including steel grade, size, quantity, and destination port. We monitor inquiries 24/7 via email and messaging platforms.

What certifications do your products hold?

We are certified under ISO9000, IATF16949, and ISO 14001. Our products undergo rigorous quality control by our professional engineering team.

What are your standard payment terms?

We typically accept 30% T/T in advance with the balance before shipment, or 100% irrevocable L/C at sight. For small orders under 1000 USD, 100% advance payment is required.