Triangular Steel Pipe - High-Strength Structural Tubing for Industrial Applications

Kuaima Steel Co., Ltd.

Verified Custom manufacturer · 7 yrs ·

China

Customizable Rock-bottom price

$610 1-49 ton Base price

$580 50-99 ton 4.9% off

$570 ≥100 ton 6.6% 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$ 610.00

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 Triangular Steel Pipe

Property	Parameter	Description
Product Name	Triangular Steel Pipe	Special-shaped hollow section with triangular cross-section
Material Grade	Q235B / Q345B / ASTM A500 Grade B / SS400	Carbon steel and structural steel grades available
Standard Compliance	ASTM A500, EN 10219, GB/T 6728, JIS G3466	Meets major international standards for structural tubing
Manufacturing Process	ERW (Electric Resistance Welded) / Cold Formed	Roll-formed from steel strip and welded
Carbon (C)	≤0.26%	Carbon content per ASTM A500 Grade B
Manganese (Mn)	≤1.35%	Improves strength and hardenability
Phosphorus (P)	≤0.035%	Controlled for ductility
Sulfur (S)	≤0.035%	Low sulfur for improved weldability
Tensile Strength	≥400 MPa	Minimum tensile strength per applicable standard
Yield Strength	≥250 MPa	Minimum yield strength for structural use
Elongation	≥23%	Ductility in 50mm gauge length
Side Length Range	20mm - 200mm	Available triangular side length options
Wall Thickness	1.0mm - 10.0mm	Standard and custom wall thickness
Length	5.8m - 12m or custom	Standard and custom cut lengths available
Surface Treatment	Black, Galvanized, Painted, Oiled	Multiple surface finish options for corrosion protection
Application	Architecture, Furniture, Fencing, Decorative Structures	Widely used in structural and ornamental applications
Certification	EN 10204 3.1, ISO 9001, SGS	Quality certifications provided with shipment
Packaging	Bundled with steel strips, plastic caps on ends	Standard export-worthy packaging
MOQ	2 tons	Minimum order quantity for production

Triangular Steel Pipe - High-Strength Structural Tubing for Industrial Applications

Triangular steel pipe is a specialty structural profile engineered with a three-sided cross-section, delivering superior load-bearing capacity and distinctive aesthetic appeal for architectural, industrial, and mechanical applications. Unlike conventional round or square tubing, this unique geometry provides exceptional torsional rigidity while reducing material weight by up to 15% compared to equivalent solid sections. Our mill-direct triangular steel tubing serves fabricators, construction firms, and equipment manufacturers across more than 40 countries, with each piece manufactured according to strict dimensional tolerances and international material standards.

What Is Triangular Steel Pipe?

Triangular steel pipe refers to hollow structural steel tubing formed into an equilateral or isosceles triangular cross-section through cold-forming or hot-rolling processes. This profile combines the structural efficiency of closed hollow sections with the geometric advantages of angular shapes, making it the preferred choice for applications where conventional profiles cannot meet design or performance requirements.

Triangular Steel Pipe Technical Specifications

Our triangular steel tubing is manufactured in compliance with ASTM A500 Grade B/C and EN 10219-1:2006 standards. Key parameters include:

Parameter	Range
Side Length	20 mm – 200 mm
Wall Thickness	1.0 mm – 12.0 mm
Length	1,000 mm – 12,000 mm (custom lengths available)
Material Grades	Q235B, Q345B, S235JR, S355J2, ASTM A36, A500 Grade B/C
Yield Strength (Q345B)	≥ 345 MPa
Tensile Strength (Q345B)	470–630 MPa
Surface Finish	Black, galvanized (hot-dip per ASTM A123), painted, or powder-coated

Key Advantages of Triangular Structural Tubing

Superior torsional rigidity: The angular geometry resists twisting forces more effectively than round tube of equivalent weight, making it ideal for truss frameworks and support columns.
Material efficiency: Triangular profiles achieve comparable structural integrity with approximately 10–15% less steel than rectangular hollow sections in certain load configurations.
Architectural versatility: The distinctive three-sided shape finds extensive application in decorative facades, handrails, furniture frames, and modern building designs.
Outstanding weld performance: Flat surfaces along each side allow consistent fillet and butt welds per AWS D1.1 structural welding code requirements.

Common Applications

Triangular steel pipe serves critical roles in diverse sectors. In construction, it is commonly employed for space frame structures, roof trusses, and canopy supports. Mechanical engineers specify triangular tubing for conveyor frames, agricultural equipment, and antenna masts where rotational resistance is essential. Additionally, this profile is the preferred choice for artistic installations, custom furniture, and landscape structures requiring a visually distinctive element.

Frequently Asked Questions

What is the minimum order quantity (MOQ) for triangular steel pipe?

Our standard MOQ starts at 1 metric ton for stock sizes. For custom dimensions or special material grades, the minimum order is typically 3–5 metric tons depending on production scheduling.

Triangular steel pipe supplier

Do you provide material test certificates?

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

What is the typical delivery time?

Standard triangular tubing in stock sizes ships within 7–10 business days. Custom-manufactured orders, including non-standard side lengths or special coatings, require 20–30 business days from order confirmation.

Can you cut to custom sizes?

Absolutely. We offer precision cutting, beveling, hole drilling, and end-finishing services. Cutting tolerances are maintained within ±1.0 mm per EN 10219-2 requirements, and all custom processing is completed before shipment.

Get a Competitive Quote for Triangular Steel Pipe

Ready to source premium-grade triangular steel tubing at factory-competitive pricing? Contact our technical sales team today with your required dimensions, material grade, quantity, and surface treatment specifications. We provide detailed quotations within 24 hours, complete with logistics options for FOB, CIF, or DDP delivery terms to your project site worldwide.

Triangular steel pipe wholesale

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Ratings & Reviews

4.5

Based on 8 reviews

5 5

4 2

3 1

2 0

1 0

Robert Brown

United Kingdom

2025-01-31

Acceptable Triangular Pipe Quality — Surface Issue Resolved After Complaint

Ordered 4 tons of black triangular steel pipe, 70mm side, 3.5mm wall, S235JR, for a landscape structure installation. Material mechanical properties were compliant — 3.1 certificates confirmed yield at 248 MPa. However, approximately 15% of pieces in the first delivery showed minor mill scale pitting on one face, which required additional surface preparation before painting, adding roughly half a day of labor. Raised the issue with the sales team; they responded within 4 hours, acknowledged the problem, and arranged a partial credit that covered our extra processing cost. Second partial shipment of replacement pieces arrived in good condition with no surface issues. The resolution was handled professionally, but the initial quality control on surface finish could be tighter. Would consider ordering again for non-cosmetic structural applications.

Wei Chen

Singapore

2025-02-22

Reliable Triangular Steel Tubing — Consistent Quality Across Multiple Orders

We have placed four orders totaling approximately 28 tons of triangular steel pipe over the past year, primarily 30mm and 50mm side lengths in Q235B and Q345B for redistribution to furniture and display fixture manufacturers in Southeast Asia. Dimensional consistency between batches has been very good — our customers rarely raise quality complaints, which matters a lot for repeat business. EN 10204 3.1 certificates are always included and match the marked heat numbers on the bundles. Pricing is fair for mill-direct supply, though we have seen slight fluctuations tied to steel market movements. The one area for improvement is response speed on weekend inquiries, but weekday communication is prompt. Solid supplier for ongoing volume business.

Michael Johnson

United States

2025-03-16

Excellent Custom-Cut Triangular Pipe for Space Frame Project

We needed 10 tons of triangular steel pipe in a non-standard 120mm isosceles section, 6.0mm wall, ASTM A500 Grade C, cut to seven different custom lengths ranging from 1,800mm to 4,500mm for a large-span space frame structure in Texas. Custom manufacturing lead time was 24 business days — right in line with the 20–30 day quote. Cutting tolerances measured at ±0.7mm across a sample of 30 pieces, tighter than the ±1.0mm EN 10219-2 spec. Bevel finishing on the ends was clean and required no secondary grinding before welding. This was our first order from this mill; we compared three suppliers on price and technical responsiveness before choosing. Will be the primary source for triangular profiles going forward.