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Premium Steel Solutions for Global Construction

High-quality roofing sheets, sandwich panels, steel coils, tubes, and structural components engineered for durability, efficiency, and performance.

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Factory Overview

About Shandong Certeg International

Shandong Certeg International Co., Ltd is a large professional enterprise engaged in the manufacturing, trading, warehousing, and machining of steel products. With years of expertise, we deliver high-performance steel solutions trusted across construction, infrastructure, and industrial sectors globally.

Our product range includes hot-rolled and cold-rolled coils, galvanized and pre-painted steel coils, corrugated roofing sheets, sandwich panels, cold room panels, structural steel (C/Z purlins, angles, beams), steel tubes, and custom machining fittings.

Serving clients in over 50 countries with precision-engineered steel systems.

Our Product Range

Comprehensive portfolio of high-strength, corrosion-resistant steel products designed for roofing, cladding, insulation, and structural integrity.

Galvanized Roofing Sheet

Galvanized Roofing Sheet

High-zinc-coated steel sheets for superior corrosion resistance. Ideal for industrial buildings, warehouses, and agricultural structures.

  • Zinc coating: 60–275 g/m²
  • Thickness: 0.18–2.0 mm
  • Standard: ASTM, JIS, EN
Prepainted Roofing Sheet

Prepainted Roofing Sheet

Color-coated steel sheets with excellent weather resistance and aesthetic finish. Available in multiple colors and textures.

  • Coating: Polyester, PVDF, SMP
  • Thickness: 0.2–1.5 mm
  • Custom colors available
EPS Sandwich Panel

EPS Sandwich Panel

Lightweight insulation panel with EPS core for walls and roofs. Excellent thermal and acoustic performance.

  • Core density: 12–40 kg/m³
  • Thickness: 50–200 mm
  • Fire rating: B2 (standard)
PU Sandwich Panel

PU Sandwich Panel

Polyurethane-core panel offering high insulation value and structural strength. Suitable for cold storage and clean rooms.

  • Thermal conductivity: 0.018–0.023 W/mK
  • Thickness: 50–200 mm
  • Fire rating: B1

Galvalume Steel Coil

Aluminum-zinc alloy-coated steel coil with exceptional durability and heat resistance. Ideal for roofing and cladding.

  • Coating: 55% Al-Zn
  • Thickness: 0.18–2.0 mm
  • Standards: ASTM A792, JIS G3321

Steel Structure Components

C/Z purlins, floor decks, angles, channels, and fittings for robust building frameworks.

  • Material: Q235, Q355
  • Custom lengths and sections
  • Galvanized or painted finish

Steel Tubes & Pipes

Square, rectangular, round, and special-section welded and seamless pipes for structural and mechanical use.

  • Sizes: 10x10 to 300x300 mm
  • Wall thickness: 0.5–12 mm
  • Galvanized or black finish

Machining & Fittings

Custom brackets, flanges, screws, and cold-formed components for precise assembly and integration.

  • CNC and laser cutting
  • Material: Carbon steel, stainless
  • OEM/ODM services available

Why Choose Certeg?

Engineered excellence backed by global standards and customer-first service.

Certified Quality

ISO 9001 certified manufacturing with strict quality control from raw material to delivery.

Global Reach

Exported to over 50 countries with reliable logistics and on-time delivery.

Integrated Supply

One-stop solution from raw steel to finished components and machining.

24/7 Support

Dedicated team for technical consultation, order tracking, and after-sales service.

15+
Years in Industry
50+
Countries Served
200K+
Tons Annual Output
99.8%
Customer Satisfaction

Frequently Asked Questions

What are the standard sizes for your roofing sheets?

Standard widths are 914mm and 1000mm, with thickness ranging from 0.18mm to 2.0mm. Custom lengths available up to 12 meters.

Do you offer OEM/ODM services?

Yes, we provide full OEM and ODM support including custom colors, profiles, packaging, and branding.

What certifications do your products have?

Our products comply with ASTM, JIS, EN, GB standards. Factory is ISO 9001 certified.

What is the delivery time?

Typically 15–30 days after order confirmation, depending on quantity and destination.

Get in Touch

Reach out for quotes, technical support, or partnership opportunities.

Contact Information

Spark Technology Concentrated Zone, High-Tech Area, Taian, Shandong Province, China

+86-538-6309687

+86 13305389010

+86-538-6309887

[email protected]

QQ: 1924485297

Visit Our Website

For detailed product catalogs, technical specifications, and company news.

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