High Strength Cold Rolled Galvanized Sigma Section Steel Purlin

Product Description

Product Description

High Strength Cold Rolled Galvanized Sigma Section Steel Purlin

Our high-performance Sigma section steel, widely known as "Ji-shaped" steel or Hat Channel, is a premium cold-formed structural component designed specifically for modern construction and solar mounting systems. Manufactured from high-quality Q235 or Q345 steel strips, this product undergoes a precise cold-rolling process to achieve a unique cross-section that resembles the Chinese character or the Greek letter Sigma ( 
Σ
Σ ). This distinctive geometry provides superior mechanical properties compared to traditional C-channel or Z-purlins.
Available in hot-dip galvanized or pre-galvanized finishes, our Sigma sections offer exceptional resistance to corrosion, making them ideal for harsh outdoor environments, industrial warehouses, and photovoltaic power stations. The precision manufacturing ensures consistent dimensions, facilitating easy assembly and reducing labor costs on-site. Whether used as roof purlins, wall girts, or solar panel support rails, this versatile steel profile delivers the strength and reliability required for demanding structural applications.

Key Features & Advantages

Key Features

1.Unique Cross-Section: The specific "Sigma" shape includes stiffening lips that significantly increase the moment of inertia and section modulus.
2.Premium Material: Made from high-tensile strength steel coils, ensuring durability and load-bearing capacity.
3.Surface Protection: Options include Hot-Dip Galvanizing (HDG) with zinc coating thickness up to 65 microns, or electro-galvanizing for indoor use.
4.Precision Forming: Produced via advanced cold-roll forming machines, guaranteeing straightness and accurate hole punching (if customized).
5.Versatile Compatibility: Designed to fit perfectly with standard M8/M10/M12 bolts and mid-clamps for solar installations.

Advantages

1.Superior Load Bearing: The reinforced edges allow the beam to span longer distances and support heavier loads (snow/wind) without bending, reducing the total amount of steel needed for a project.
2.Anti-Slip & Stability: The shape prevents rolling and offers better friction against mounting surfaces compared to flat bars, enhancing structural stability.
3.Cost-Efficiency: Due to its high strength-to-weight ratio, you can use lighter gauge steel to achieve the same strength as heavier traditional beams, saving on material and transport costs.
4.Easy Installation: The open design allows for easy cabling and piping integration within the structure, and simple bolted connections speed up construction time.
5.Corrosion Resistance: Especially with HDG treatment, the lifespan can exceed 25-30 years, minimizing maintenance requirements for solar farms and industrial buildings.

Specification

Standard	National Standard	Tolerance	± 1%
Lead Time	8-14 Days	Material	Q255
Origin	China

Why Choose Our Factory

Certifications

Company Profile

Tianjin Guitai New Energy Technology Co., Ltd. was established in 2014 and is located in Yangjiayuan Development Zone, Jinghai District, Tianjin. Since its inception, it has been committed to "empowering the world with sunshine and letting green illuminate the future". The company not only has a complete R&D system, but also is equipped with advanced production equipment and strict quality control processes. From raw material procurement to product delivery, every link has been tested layer by layer to ensure the reliability and stability of product quality. In addition, we have established a professional after-sales team to provide customers with a full range of technical support and after-sales services, so that customers have no worries. Team members use professional knowledge and professionalism to inject strong impetus into the company's development, and also provide customers with reliable support and guarantee.
With its excellent technical strength and high-quality services, it has won the trust of many customers. Its business covers many provinces and cities in China and has gradually expanded to the international market. In the future, the company will continue to uphold the development concept of green, innovation and win-win, and contribute to the development of the global energy industry.

FAQ

1.Are you a manufacturer?
Yes, we are a manufacturer, We have own factory.
2.Can we visit your factory ?
Warmly welcome once we have your schedule we will pick you up.
3.Do you have quality control?
Yes, we have gained ISO authentication.
4.Can you arrange the shipment?
Sure, we have permanent freight forwarder who can gain the best price from most ship company and offer professional serice.
5.How long is your delivery time?
Generally it is 7-14 days if the goods are in stock or itis 25-45 days if the goods are notin stock, itis according to quantity.