Zhongji Metal
Diverse Product Range · Reliable Quality · Tailored Solutions
Covering various types of steel products such as steel pipes, steel plates, steel coils, steel bars, and structural steel
meeting the diverse needs of different industries.
Product Description
Technical & Material Properties
Base Steel: DX51D, SGCC, ASTM A653 CS Type B.
Coating Weight: Z40–Z275 g/m².
Width: 600–1250 mm; Thickness: 0.2–3.0 mm.
Surface Finish: Regular spangle, minimized spangle, zero spangle.
Corrosion Resistance: Neutral salt spray up to 720 hours for Z275.
Applications & Advantages
Applications: Roofing and cladding panels, ducts, steel furniture, automotive body parts, appliances.
Advantages:
Excellent rust protection at a lower cost than stainless steel
Easy to paint and form
Long service life in outdoor conditions
Example: Z275 galvanized coil used for agricultural barn roofing lasts 20+ years without major rust.
Manufacturing Process & Standards
Process:
Cold rolled coil cleaning and annealing
Hot-dip galvanizing in molten zinc at 460–480°C
Passivation/oiling
Tension leveling and coiling
Standards: ASTM A653, EN 10346, JIS G3302.
Inspection: Coating weight test, bend test, adhesion check.
Packaging: Steel straps, protective wrapping, coil eye protection.
Product Real Shot

Packaging and Shipping

FAQ
Q1: What product information must I provide before making a purchase?
A: Please provide the material, size, surface treatment requirements, and the quantities you need.
Q2: What about product pricing information?
A: Prices may vary due to fluctuations in raw material costs.
Q3: Is it possible to send samples?
A: Yes, we offer free samples with express shipping worldwide.
Q4: Do you offer a service for customized products?
A: Yes, we can supply according to your specific requirements.
Q5: Can I visit you in person?
A: Customers from all over the world are welcome to meet with us.
Q6: Can you assist me in importing steel products for the first time?
A: Yes, we can provide support through our experienced shipping agents.
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Reliable Quality – All products are made with premium raw materials, advanced equipment, and strict quality inspections before delivery.
Compliance Guarantee – Specifications strictly follow technical agreements, ensuring products are free from defects in design, materials, and workmanship.
After-sales Service – Dedicated teams provide timely response, technical consultation, and long-term support.
Global Commitment – We serve clients in over 50 countries with consistent quality and reliable service.

First class quality service and professional after-sales team.
*We respect your confidentiality and all information are protected.