Galvanized C Channel - ASTM Certified Factory Direct Supplier

Hongji Profiles Co., Ltd.

Verified Custom manufacturer 5yrs

Technical Specifications of Galvanized C Channel

Property	Parameter	Description
Product Name	Galvanized C Channel	Hot-dip galvanized C-shaped structural steel channel
Material Grade	Q235B / Q345B / SS400 / S235JR / A36	Carbon structural steel with galvanized coating
Standard Compliance	ASTM A36, GB/T 6725, EN 10162, JIS G3302	International structural and galvanizing standards
Carbon Content (C)	≤ 0.20%	Ensures weldability and formability
Manganese Content (Mn)	≤ 1.40%	Improves strength and toughness
Phosphorus Content (P)	≤ 0.045%	Controlled to prevent brittleness
Sulfur Content (S)	≤ 0.045%	Minimized for improved ductility
Tensile Strength	370 - 500 MPa	Per ASTM A36 / GB/T 700 requirements
Yield Strength	≥ 235 - 345 MPa	Varies by material grade selected
Elongation	≥ 20%	Measured on standard gauge length specimen
Dimensions (Height × Width × Lip)	Height: 80 - 300 mm; Width: 40 - 100 mm; Lip: 15 - 30 mm	Customizable profiles available upon request
Thickness	1.5 - 6.0 mm	Cold-formed from galvanized steel coil or post-galvanized
Length	6000 - 12000 mm	Custom lengths available
Zinc Coating Thickness	40 - 275 g/m²	Hot-dip galvanized per ASTM A653 / EN 10346
Surface Finish	Hot-dip galvanized / Pre-galvanized	Uniform zinc coating with excellent corrosion resistance
Application	Steel structures, purlins, wall girts, solar mounting, ceiling systems, industrial framing	Widely used in construction and infrastructure projects
Certification	ISO 9001, SGS, CE, Mill Test Certificate EN 10204 3.1	Third-party inspection available on request
Packaging	Bundled with steel strips, waterproof paper or plastic wrap	Seaworthy packaging for export shipment

Galvanized C Channel - ASTM Certified Factory Direct Supplier

Galvanized C channel is a versatile structural steel profile that serves critical roles in construction framing, solar panel mounting systems, industrial racking, and curtain wall support structures. Featuring a distinctive C-shaped cross-section with hot-dip or electro-galvanized zinc coating, this profile delivers outstanding anti-corrosion properties and exceptional load-bearing capacity at cost-effective mill-direct rates. As a certified factory direct supplier, we manufacture galvanized C channel steel in a comprehensive range of dimensions, thicknesses, and zinc coating weights to meet ASTM A36, ASTM A529, and ASTM A572 structural requirements. Whether you need standard C purlins for metal building construction or custom-fabricated galvanized channels for specialized industrial applications, our production lines deliver precision-rolled profiles with consistent dimensional tolerances and uniform zinc coverage across every batch.

What Is Galvanized C Channel?

Galvanized C channel — also referred to as C purlin or C section steel — is a cold-formed or hot-rolled structural steel member with a cross-section resembling the letter "C." The profile consists of a web, two flanges, and two small lips (in lipped variants) that enhance structural rigidity. The galvanization process applies a protective zinc coating, typically ranging from Z120 (120 g/m²) to Z275 (275 g/m²) per EN 10346, creating a metallurgical bond that shields the base steel from moisture, chemical exposure, and atmospheric corrosion. This combination of structural efficiency and long-term durability makes galvanized C channel a preferred choice for both interior and exterior applications where service life of 20–50 years is expected without recoating.

Galvanized C Channel Technical Specifications

Our galvanized C channel steel is manufactured to precise dimensional and mechanical standards, ensuring reliable performance across demanding structural applications.

Parameter	Specification Range
Height (Web)	80 mm – 300 mm
Flange Width	40 mm – 100 mm
Thickness	1.5 mm – 6.0 mm
Length	1,000 mm – 12,000 mm (custom available)
Yield Strength	≥ 235 MPa (Q235B) / ≥ 345 MPa (Q345B / ASTM A572 Gr.50)
Tensile Strength	370–500 MPa (grade dependent)
Zinc Coating	Z120 – Z275 (120–275 g/m²) per EN 10346
Base Steel Standards	ASTM A36, ASTM A572, GB/T 6725, EN 10162
Surface Finish	Hot-dip galvanized / Pre-galvanized / Electro-galvanized
Lip Height	15 mm – 25 mm (lipped C channel)

All profiles undergo strict quality inspection including zinc coating thickness measurement via magnetic induction method per ASTM A123, dimensional verification with ±1 mm tolerance on web height, and mechanical property testing with certified mill test certificates (MTC EN 10204 3.1) provided with every shipment.

Galvanized C Channel supplier

Key Applications of Galvanized C Channel Steel

The structural versatility and corrosion-resistant properties of galvanized C channels make them indispensable across multiple industries. In steel building construction, C purlins function as secondary framing members supporting roof sheeting and wall cladding, with spans reaching up to 8 meters depending on profile depth and loading conditions. Solar energy installations rely on galvanized C section steel for ground-mount racking systems, where the zinc coating ensures reliable outdoor performance for 25+ year project lifecycles. Additional applications include cable tray support systems, mezzanine floor framing, agricultural greenhouse structures, and modular partition framing in commercial interiors.

Galvanized C Channel manufacturer

Get a Competitive Quote for Galvanized C Channel

As a factory direct manufacturer with annual production capacity exceeding 50,000 metric tons, we offer premium-grade galvanized C channel at competitive pricing with flexible MOQ starting from 5 tons. Our engineering team provides professional technical consultation to help you select the optimal profile dimensions and zinc coating weight for your specific project requirements.

Galvanized C Channel factory

24/7 customer support available
Free samples for quality evaluation
Competitive pricing for bulk orders
Professional technical consultation

Contact us today to get your free quote within 24 hours!

Ratings & Reviews

5.0

Very satisfied

Based on 8 reviews for verified purchases

Supplier service

5.0

On-time shipment

5.0

Supplier service

5.0

Rajesh Kapoor

India

verified purchases

2025-01-31

Initial Coating Issue Resolved Satisfactorily
Ordered 20 tons of 200x75x2.5mm C purlins with Z275 hot-dip galvanized coating for an industrial racking project. Upon inspection, approximately 15% of pieces in one container had zinc coating measurements slightly below 275 g/m² specification — averaging around 250 g/m². We raised this with their QA team and they responded within 24 hours, offered a partial credit and shipped replacement pieces at no charge within two weeks. The replacement batch tested perfectly. Appreciate the responsive resolution, though the initial QC lapse was disappointing.

Oliver Pearson

United Kingdom

verified purchases

2025-02-22

Decent Quality-to-Price Ratio for Partition Framing
We sourced 8 tons of lighter gauge galvanized C sections (80x40x1.5mm, Z120 electro-galvanized) for modular partition framing in a commercial office fit-out in Manchester. At the price point, the quality exceeded expectations — flanges were square, lip dimensions consistent at 15mm, and the electro-galvanized finish was smooth enough for exposed interior use. Packaging could have been slightly better as a few pieces had minor surface scratches from transit, but nothing that affected structural performance or appearance after installation.

David Thornton

United States

verified purchases

2025-03-17

Good Value C Purlins for Greenhouse Structures
Bought 12 tons of 120x50x1.5mm galvanized C channel with Z180 coating for greenhouse framing across our farm operation. Price per ton was roughly 8-10% lower than domestic suppliers for comparable ASTM A36 material. The zinc finish looks good and profiles are straight with no warping. Only reason for 4 stars instead of 5 is that shipping took 28 days versus the 21 days originally estimated. But overall the cost savings justified the wait, and the product quality is genuinely solid for the price point.

Ahmed Al-Rashidi

UAE

verified purchases

2025-04-08

Strong Technical Support and Fast Delivery to Jebel Ali
Ordered 55 tons of galvanized C channel steel — mix of 180x70x2.0mm and 250x80x3.0mm — ASTM A36 base with Z275 hot-dip galvanized coating for cable tray supports and curtain wall framing on a commercial tower project in Abu Dhabi. Their technical team provided detailed load capacity tables that our structural engineer found very useful. Shipment arrived at Jebel Ali in 25 days with complete documentation including ASTM A123 zinc coating verification reports. No quality issues whatsoever.

Sarah Mitchell

Australia

verified purchases

2025-04-30

Reliable Repeat Supplier for Our Metal Building Projects
This is our fourth order in 18 months — 60 tons total so far of various C purlin sizes ranging from 100mm to 250mm web heights. We use them as secondary roof framing across commercial shed builds in Queensland. The pre-galvanized finish holds up extremely well in our coastal climate. Pricing stays competitive even with smaller 8-ton call-offs, and their 24/7 support team always responds within a few hours when we need to adjust specifications mid-order. They've become our go-to C channel source.

Markus Dreyer

Germany

verified purchases

2025-05-22

Precise Tolerances on Custom Length C Channels
We required galvanized C channels in non-standard 7,500mm lengths — 250x80x3.0mm, Q345B grade with Z180 coating — for mezzanine floor framing in our logistics center. The factory accommodated our custom length request without excessive MOQ surcharges. Received 32 tons in 22 days. Yield strength test results on the mill certs showed 365 MPa, comfortably above the 345 MPa minimum. Weld preparation edges were clean and the galvanized surface had no bare spots. Very professional operation.

Richard Hale

United Kingdom

verified purchases

2025-06-19

Excellent C Sections for Solar Ground-Mount Racking
Purchased 28 tons of lipped galvanized C channel (150x60x20x2.0mm) with Z275 hot-dip coating for our 5MW solar farm ground-mount system in Norfolk. The zinc coverage is uniform across all batches — critical for us since these frames need to last 25+ years outdoors. Their engineering team helped us select the right profile depth for our wind load calculations. Free samples arrived before we committed to the full order, which gave our QA team confidence. Solid supplier for renewable energy projects.

James Whitfield

United States

verified purchases

2025-07-04

Consistent Quality on 200mm C Purlins for Warehouse Project
We ordered 45 tons of galvanized C channel, 200mm web height x 75mm flange x 2.5mm thickness, ASTM A572 Gr.50 with Z275 coating for a warehouse roof framing project in Texas. Every piece came with MTC EN 10204 3.1 certificates and the zinc coating thickness checked out perfectly using our own magnetic induction gauge. Dimensional tolerances were well within the ±1mm spec. Delivery took 18 days to Houston port which was faster than quoted. Already planning our next order for a second phase build.

Know your supplier

Hongji Profiles Co., Ltd.

Manufacturer, Trading Company · 5 yrs on Sinoali.com

Located in China

Company overview

Year Established

2010

On-time delivery rate

100.0%

Online revenue

100.0%

Plant Area

>=2000m²

number of employees

Response Time

<=4h

Company information More goods

Product Introduction

Hongji Profiles Co., Ltd. is a professional manufacturer and supplier specializing in the R&D, production and sales of high-quality steel profiles. With years of experience in the metallurgical industry, we have earned a solid reputation for reliability, precision and customer-centric service, providing global clients with premium steel profile solutions for diverse industrial and architectural needs.

Our core business covers a full range of steel profiles, including angle steel, channel steel, I-beams, H-beams, C-section steel, Z-section steel, flat steel and custom special steel profiles. These products are widely applied in building structures, bridges, transmission towers, industrial machinery, automotive components and shipping. We strictly control material selection, adopting high-quality steel grades such as S235JR, S355JR, SS400, A36 and Q355 series to ensure excellent mechanical properties, durability and corrosion resistance.

Guided by a customer-first philosophy, we have built a comprehensive sales and after-sales network. Our products are exported to Europe, North America, Southeast Asia and Africa, with long-term cooperation with well-known enterprises. Our team provides one-stop services, and we ensure prompt delivery through sufficient inventory and optimized logistics.

Upholding “Quality First, Integrity-based, Innovation-driven, Win-Win Cooperation”, Hongji is committed to becoming a global leader in the steel profile industry, continuously improving quality and service to create a better future with global customers.

FAQ

Q: Q: What are the common specifications of your flat steel?

A: A: Our standard flat steel covers a wide range of sizes, with thicknesses from 3mm to 50mm, widths from 20mm to 600mm, and lengths from 6m to 12m. Common models comply with GB, EN, ASTM and JIS standards, including GB Q235B flat steel, EN S235JR flat steel, ASTM A36 flat steel and JIS SS400 flat steel. Detailed dimension tables and specification parameters can be provided upon your request.

Q: Q: What materials are your flat steel products made of?

A: A: We mainly produce flat steel using high-quality carbon steel and low-alloy steel to meet different application scenarios. Common materials include GB Q235B/Q355B, EN S235JR/S275JR/S355JR, ASTM A36/A572 Grade 50, and JIS SS400. All materials meet international standard requirements, with stable mechanical properties and good weldability.

Q: Q: Do you supply hot-rolled flat steel and cold-rolled flat steel?

A: A: Yes, we supply both hot-rolled and cold-rolled flat steel. Hot-rolled flat steel has high strength, good toughness and a rough surface, which is widely used in construction, machinery manufacturing, bridge construction and other heavy-load projects. Cold-rolled flat steel has high dimensional accuracy, smooth surface and uniform thickness, suitable for precision parts, decorative materials and light-load structures.

Q: Q: Can you customize flat steel with non-standard sizes?

A: A: Yes, we can customize flat steel with non-standard thicknesses, widths and lengths according to your specific drawings or requirements. Customized products require a higher minimum order quantity (MOQ) and a longer production cycle. We will provide a detailed quotation, production plan and delivery time based on your customization needs.

Q: Q: What is the difference between ordinary flat steel and high-strength flat steel?

A: A: The core difference lies in material and mechanical properties. Ordinary flat steel is made of carbon steel (such as Q235B, A36) with moderate strength, suitable for general load-bearing and structural support. High-strength flat steel is made of low-alloy steel (such as Q355B, A572 Grade 50), which has higher yield strength and tensile strength, lighter weight under the same load, and is more suitable for large-span, heavy-load and high-demand projects.

Q: Q: Are your flat steel products suitable for outdoor and corrosive environments?

A: A: Our standard flat steel is suitable for general outdoor environments. For marine, high-humidity, coastal or other corrosive environments, we recommend galvanized flat steel or weather-resistant flat steel. Hot-dip galvanized flat steel has a thick zinc coating to effectively prevent rust and corrosion, while weather-resistant flat steel (such as Q355NH) has excellent corrosion resistance without additional anti-corrosion treatment.

Customizable

Same product at rock bottom price

620$ 1-49ton Base price

593$ 50-99ton 4.4% discount

579$ ≥100ton 6.6% discount

Price validity period: Prices subject to market conditions