Special Shape Steel Pipe Supplier - Custom Profiles for Industrial Applications

Kuaima Steel Co., Ltd.

Verified Custom manufacturer · 7 yrs ·

China

Customizable Rock-bottom price

$595 1-49 ton Base price

$570 50-99 ton 4.2% off

$555 ≥100 ton 6.7% off

Price validity: subject to market conditions

Supplier's customization ability

Drawing-based customization
Sample-based customization
Full customization

Quantity

Minimum order quantity: 1 ton

Shipping total: To be negotiated

Subtotal of goods US$ 595.00

Start order request

Payment and delivery

Payment:: by contract — deposit, balance after your inspection
Lead time:: confirmed with the quotation
Packaging:: standard export packing
Samples:: available on request

Product details

Technical Specifications of Special Shape Steel Pipe

Property	Parameter	Description
Product Name	Special Shape Steel Pipe	Non-standard cross-section steel tubing
Material Grade	Q235B / Q345B / ASTM A500 / SS400	Carbon steel and structural steel grades
Standard Compliance	ASTM A500, EN 10219, GB/T 6728, JIS G3466	Meets major international standards
Manufacturing Process	Cold Formed / Hot Formed / Welded	ERW and seamless options available
Available Shapes	Oval, D-shape, Hexagonal, Triangular, Flat-sided, Irregular	Custom profiles per drawing
Carbon (C)	≤0.26%	Carbon content for Q345B grade
Manganese (Mn)	≤1.60%	Enhances strength and hardness
Silicon (Si)	≤0.55%	Deoxidizer element
Phosphorus (P)	≤0.035%	Controlled for improved ductility
Sulfur (S)	≤0.035%	Low sulfur for better weldability
Tensile Strength	≥470 MPa	Minimum tensile strength for Q345B
Yield Strength	≥345 MPa	Minimum yield strength for Q345B
Elongation	≥21%	Ductility in 50mm gauge length
Wall Thickness	1.0mm - 30mm	Standard and custom thickness available
Length	5.8m - 12m or custom	Cut-to-length service available
Surface Treatment	Black, Galvanized, Painted, Powder Coated	Multiple finish options per requirement
Application	Architecture, Machinery, Furniture, Automotive, Guardrails	Structural and decorative applications
Certification	EN 10204 3.1, ISO 9001, SGS	Quality certifications provided
Packaging	Bundled with steel strips, plastic caps on ends	Standard seaworthy export packaging
MOQ	5 tons	Minimum order quantity per specification

Special Shape Steel Pipe Supplier - Custom Profiles for Industrial Applications

Choosing a reliable special shape steel pipe supplier is essential for projects that demand non-standard cross-sectional profiles engineered to precise dimensional tolerances. Special shape steel pipes—including hexagonal, oval, D-shaped, triangular, flat-sided, and other irregular profiles—serve critical roles in architectural frameworks, automotive components, agricultural machinery, and specialized industrial equipment. As a mill-direct manufacturer with over 15 years of production experience, we deliver custom-profiled steel tubing that meets stringent mechanical and dimensional requirements for buyers across more than 40 countries.

Special shape steel pipe manufacturer

What Is Special Shape Steel Pipe?

Special shape steel pipe refers to hollow steel tubing manufactured with non-circular, non-square cross sections. Unlike standard round or rectangular tubes, these profiles are cold-drawn or roll-formed into geometries such as elliptical, semi-circular, trapezoidal, P-shaped, or any customer-specified contour. They are produced from carbon steel (Q235B, Q345B, ASTM A500), stainless steel (304, 316L), or alloy steel depending on the intended service environment.

Special Shape Steel Pipe Technical Specifications

Our custom-profiled steel tubes are manufactured according to GB/T 3094-2012, ASTM A500/A500M-21, and EN 10219-2:2019 standards. Key parameters include:

Special shape steel pipe wholesale

Parameter	Range
Wall Thickness	0.5 mm – 20 mm
Outer Dimension	10 mm – 500 mm (max bounding dimension)
Length	Up to 12,000 mm, cut-to-length available
Material Grades	Q235B, Q345B, ASTM A500 Gr.B/C, SS304, SS316L
Yield Strength (Q345B)	≥ 345 MPa per GB/T 1591
Surface Finish	Black, galvanized, polished, or painted
Dimensional Tolerance	±0.1 mm on profile contour per drawing

Why Partner with Our Special Shape Steel Pipe Supply Team

Custom Die Development: In-house tooling workshop capable of producing new profile dies within 7–10 working days, reducing lead time for prototype orders.
Flexible Material Selection: Carbon steel, stainless steel, and low-alloy high-strength grades processed on the same production line for efficient multi-material orders.
Quality Assurance: ISO 9001:2015-certified facility with in-process ultrasonic testing, dimensional CMM inspection, and mill test certificates (MTC) compliant with EN 10204 Type 3.1.
Export-Ready Packaging: Bundles wrapped with anti-corrosion VCI paper, secured with steel straps, and loaded in seaworthy containers for damage-free global delivery.

Frequently Asked Questions

What is the minimum order quantity (MOQ) for special shape steel pipes?

Our standard MOQ starts at 2 metric tons per profile and grade. For new die development projects, we accept trial orders as low as 1 ton to validate dimensional accuracy before volume production.

Do you provide material test certificates?

Yes. Every shipment includes EN 10204 Type 3.1 mill test certificates covering chemical composition, mechanical properties, and dimensional inspection results traceable to the production heat number.

What is the typical delivery time?

Standard profiles in stock grades ship within 10–15 working days. Fully custom profiles requiring new die fabrication typically require 20–30 working days from drawing approval to dispatch.

Can you produce profiles based on our custom drawings?

Absolutely. Send us your DXF or DWG files with dimensional tolerances, and our engineering team will confirm feasibility, recommend optimal forming processes, and provide a detailed quotation within 48 hours.

Special shape steel pipe China

Get a Competitive Quote for Special Shape Steel Pipe

Whether you need elliptical tubes for architectural handrails, D-shaped profiles for conveyor systems, or entirely unique cross sections for OEM machinery, our technical sales team is prepared to deliver factory-competitive pricing with guaranteed quality. Contact us today with your profile drawings, material grade, quantity, and required delivery schedule to receive a tailored proposal.

Ratings & Reviews

4.5

Based on 8 reviews

5 5

4 2

3 1

2 0

1 0

Chris Martin

Canada

2024-12-08

Acceptable Quality Hexagonal Tubes — Communication Delay Resolved

Ordered 4 tons of hexagonal steel pipes in Q345B, 25mm across flats, 3mm wall, for a mining equipment application in Alberta. Material properties and dimensional tolerances on the finished product were correct and the MTC was compliant. Main issue was a 5-day delay in receiving the feasibility confirmation after submitting our DWG files — response came in on day 7 rather than the quoted 48 hours. After raising this with the sales team, they escalated internally and provided a revised production schedule with daily updates. Final delivery was only 3 days past the original target. Product quality itself met spec. Communication process has apparently been improved since; we are cautiously planning a repeat order.

Wei Chen

Singapore

2025-01-04

Excellent Multi-Profile Order — Carbon and Stainless on One PO

Placed a consolidated order covering three profile types: P-shaped Q235B tubes (4 tons), semi-circular SS304 tubes (2 tons), and flat-sided Q345B profiles (5 tons) — total 11 tons across two material grades on a single purchase order. The ability to process mixed-material orders on the same production line saved us significant logistics coordination. All three profiles shipped together in one 40HQ container with individual bundle labeling and separate MTCs per grade and heat number. Dimensional inspection reports for each profile were attached to the packing list. This is our fifth consolidated order and the consistency across batches has been reliable throughout.

William Taylor

Australia

2025-01-26

Reliable SS316L Oval Tubes for Marine Deck Fittings

Ordered 3 tons of SS316L oval tubes, 2mm wall thickness, 50×30mm section, 6000mm lengths, for deck fitting components on a commercial vessel refit in Fremantle. Carbon content on the MTC read 0.019%, well within the 0.03% limit for 316L. Surface finish was smooth and consistent. Delivery took 16 working days, slightly longer than the initial 12-day estimate due to port congestion — supplier communicated the delay proactively and updated the ETA within 24 hours. Packaging integrity was excellent; all tubes arrived without surface damage. Pricing was fair for stainless material with full 3.1 certification.