Z-Section Steel for Purlin Support to ANSI Standards
| Place of Origin: | Zhengzhou,China |
|---|---|
| Brand Name: | RUIISTEEL |
| Materials: | Q235, Q355, etc |
| Surface Treatment: | Galvanizing |
| Thickness: | 1.6-3.0mm |
| Section Height: | 120-350mm |
| Certification: | CE, ISO, GB, AISC, SGS, BV |
| Service Life: | Over 50 Years |
| Delivery Time: | 20 Days After Receiving the Deposit |
| Payment: | T/T, L/C |
Product Details
Z-section steel is a type of continuously hot-dip galvanized or weather-resistant structural steel component produced through a cold-forming process. It gets its name from its Z-shaped cross-section. It is widely used in steel structure buildings for purlins, wall beams, enclosure systems, and load-bearing connectors, and is particularly suitable for large-span, lightweight steel structure industrial and civil buildings.

Features of Z-section steel
Optimized Cross-Section, High Load-Bearing Capacity
The unique asymmetrical cross-section of Z-section steel allows for a reasonable stress distribution across the continuous span when used in lap joints. Its bending stiffness is superior to C-section steel of the same thickness, making it especially suitable for large-span roof and wall systems.
Overlapping Joints, Adaptable to Slopes and Loads
Continuous overlaps can be achieved by rotating 180°, effectively transferring bending moments and reducing the number of connectors required. It can also adapt to changes in roof slope and uneven loads, resulting in better overall structural integrity.
Diverse Materials and Coatings, Meeting Global Standards
Available with Q235B, Q355B, S280GD, S350GD, and S450GD steels (compliant with international standards such as EN 10346 and ASTM A653), with galvanized layer thicknesses ranging from Z100 to Z275. Aluminum-zinc (AZ) coatings or anti-corrosion coatings are also available to meet service life requirements in various corrosive environments (C3–C5).
Flexible Processing and Strong Compatibility
Pre-fabrication of openings, corners, and stiffening ribs can be done in the factory according to design drawings, allowing for rapid installation with self-tapping screws and bolts. A complete set of accessories, including tie rods, struts, and connecting plates, simplifies on-site construction.
Lightweight, Cost Reduction and Efficiency Improvement
Cold bending forming process fully utilizes material strength, resulting in lower steel consumption under the same load conditions compared to traditional hot-rolled steel sections. The lightweight nature reduces foundation and transportation costs, and convenient installation significantly shortens the construction period.

Applications of Z-shaped steel
- Roof purlins and wall purlins for steel structure factories, warehouses, and logistics centers;
- Lateral bracing for large-span light steel buildings, prefabricated houses, and frame infill walls;
- Enclosure structures for agricultural greenhouses, farms, exhibition halls, and sports stadiums;
- Load-bearing components for solar photovoltaic support systems.
Quality Control and Certification
Z-section steel is manufactured and inspected according to international standards such as JIS, ASTM, EN, and GB, ensuring globally recognized dimensional accuracy, straightness, and surface quality.
We earn the long-term trust of global clients through unparalleled efficiency and relentless pursuit of quality excellence.
Production Workshop Display
The company has a modern production base of over 8,000 square meters, equipped with a steel structure welding workshop, two Italian‑imported sandwich panel production lines, three complete house production lines and an intelligent assembly system. The annual steel structure capacity reaches 150,000 tons, with a daily output of 3,000 square meters of high‑end sandwich panels and 200 sets of modular houses.
Product Packaging & Shipping
Our packing and shipping services offer customized, robust transportation solutions for every product category, ensuring your goods arrive safely worldwide. Steel structural components are packed with sturdy steel frames, forming stable transport units that effectively withstand the bumps and pressure of long-distance sea and land transport. Sandwich panels and container houses are fully wrapped with high-quality protective films, providing moisture, dust, and scratch protection while fully preserving the coating and appearance of the panels. We have deep expertise in export logistics; from packing methods to container loading, every step is professionally optimized to provide you with a worry-free and reliable delivery experience.
Why Choose Us?
- Compliance guaranteed: Complete international certifications, compatible with national standards, reducing application and acceptance risks.
- Cost controllable: Chinese supply and prefabricated construction result in overall cost savings of 15%-25%.
- Schedule guaranteed: BIM collaboration and factory prefabrication enable rapid production and a competitive market advantage.
- Reliable quality: Export-grade processes and rigorous testing ensure both structural safety and durability meet standards.
Frequently Ask Questions
Design drawings → Quotation → Confirmed drawings → Purchase order → Purchase order confirmation → 30% deposit payment → Production → Quality inspection → Balance payment → Shipment.
This depends on the order quantity and the complexity of the customization. Generally, for regular order quantities, delivery time is within 30 days after receiving the deposit.
Yes, samples can be provided, but customers need to pay for the sample fee and international express shipping.
You are welcome to send inspectors at any time. Inspections can be arranged not only during container loading but also at any time during the production process.
We are a manufacturing plant with over 120 employees and a factory area of over 10,000 square meters, where you can enjoy the best prices and competitive costs.
Yes, we have over 10 design engineers. They can create complete solution drawings based on your needs. Software they use includes: AutoCAD, PKPM, MTS, 3D3S, Tarch, Tekla Structures (Xsteel) V12.0, etc.
RuiSteel is a company that highly values quality. We hold ISO9001, BV, SGS, and FM certifications.
Yes, we will send you relevant information and photos at different stages of your order's production so you can get the latest updates in a timely manner.

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