Hot Dip Galvanized Steel Coil - ZAM Coated Corrosion-Resistant Metal Sheet

Tianjin TISCO International Trade Co., Ltd.

Verified Custom manufacturer 5yrs

Technical Specifications of Hot Dip ZAM Steel Coil

Property	Parameter	Description
Product Name	Hot Dip ZAM Steel Coil	Zinc-Aluminum-Magnesium alloy coated steel coil
Coating Type	Zn-Al-Mg (ZAM)	Superior corrosion protection coating
Coating Composition	Zn: 88-94%, Al: 4-10%, Mg: 2-4%	Optimized alloy composition for durability
Coating Weight	60-275 g/m² (both sides)	Available in various coating thickness options
Base Material	Cold Rolled Steel / Hot Rolled Steel	High-quality carbon steel substrate
Steel Grade	SGCC, DX51D, S280GD, S350GD	Multiple grade options per EN 10346 / JIS G3321
Thickness Range	0.12 - 3.0 mm	Available thickness options for various applications
Width Range	600 - 1500 mm	Standard and custom widths available
Coil Weight	3 - 10 tons	Standard coil weight range
Tensile Strength	270-550 MPa	Depends on steel grade selection
Yield Strength	≥140-350 MPa	Minimum yield strength per grade
Elongation	≥20-34%	Ductility varies by grade and thickness
Corrosion Resistance	10-20 times vs. galvanized steel	Exceptional long-term corrosion protection
Surface Treatment	Chromate-free, Oiled, Unoiled	Environmentally friendly surface options
Standard Compliance	JIS G3321, EN 10346, ASTM A792	Meets international quality standards
Application	Roofing, automotive, appliances, construction	Wide range of industrial applications
Certification	ISO 9001, EN 10204 3.1, SGS	Quality certifications provided
Packaging	Steel strapping, waterproof paper, wooden pallet	Standard export seaworthy packaging
MOQ	25 tons	Minimum order quantity per specification

Hot Dip Galvanized Steel Coil - ZAM Coated Corrosion-Resistant Metal Sheet

Hot dip ZAM steel coil represents a revolutionary advancement in corrosion-resistant steel technology, combining zinc, aluminum, and magnesium coating for exceptional durability. This advanced metallic-coated steel product delivers superior protection against harsh environmental conditions, making it the preferred choice for construction, automotive, and industrial applications where long-term performance is critical. Manufactured through a continuous hot-dip coating process, ZAM steel coils offer up to 10 times greater corrosion resistance compared to conventional galvanized steel.

What is Hot Dip ZAM Steel Coil?

Hot dip ZAM steel coil is a high-performance metallic-coated steel product featuring a proprietary alloy composition of zinc (Zn), aluminum (Al), and magnesium (Mg) applied through continuous immersion coating technology. The typical coating composition consists of 6% aluminum, 3% magnesium, and balance zinc, creating a multi-layered protective barrier with self-healing properties. This ternary alloy coating provides exceptional resistance to red rust formation and demonstrates outstanding cut-edge protection capabilities.

Hot Dip ZAM Steel Coil Technical Specifications

ZAM coated steel coils are manufactured according to JIS G3321 and proprietary mill specifications. Standard thickness ranges from 0.18mm to 4.0mm with width availability between 600mm to 1,500mm. Coating mass typically ranges from Z08 (80g/m²) to Z27 (270g/m²) per side, with total coating mass of 160-540g/m². The base steel substrate includes commercial quality, structural quality, and high-strength low-alloy grades with yield strength ranging from 140 MPa to 550 MPa depending on application requirements.

Hot dip zam steel coil supplier

Why Choose Our Hot Dip ZAM Steel Coil

Our manufacturing facility operates state-of-the-art continuous hot-dip coating lines with precise alloy bath composition control and advanced air-knife technology ensuring uniform coating distribution. We maintain ISO 9001:2015 certification and provide complete mill test certificates including chemical composition analysis, mechanical property verification, and coating mass measurement per ASTM A653/A653M standards. Our ZAM steel coils undergo rigorous salt spray testing per ASTM B117, consistently achieving over 1,000 hours without red rust formation on cut edges.

Hot dip zam steel coil manufacturer

Frequently Asked Questions

What is the minimum order quantity (MOQ)?

Our standard minimum order quantity is 25 metric tons per specification. For trial orders or sampling purposes, we accommodate reduced quantities of 5-10 tons with adjusted pricing. Mixed container loading is available for customers requiring multiple thickness or width combinations, subject to mill scheduling availability.

Do you provide material test certificates?

Yes, we supply comprehensive mill test certificates (MTC) compliant with EN 10204 Type 3.1 documentation standards. Each certificate includes chemical composition analysis via optical emission spectrometry, mechanical property test results, coating mass verification per unit area, and dimensional tolerance measurements. Third-party inspection by SGS, BV, or Intertek can be arranged upon request.

Hot dip zam steel coil China

What is the typical delivery time?

Standard production lead time ranges from 25-35 days after order confirmation and deposit receipt, depending on coating mass specifications and order volume. For commonly stocked gauges in Z12 coating (120g/m² per side), delivery can be expedited to 15-20 days. Express production scheduling is available for urgent requirements with premium surcharge application.

Can you cut to custom sizes?

Our service center provides precision slitting to custom widths with tolerance of ±3mm and cut-to-length processing with tolerance of ±5mm per ASTM A924 standards. Blanking and shearing services are available for specific panel dimensions. We accommodate edge conditioning options including deburred edges, rounded corners, and protective edge coating for enhanced handling safety and corrosion protection.

Get a Competitive Quote for Hot Dip ZAM Steel Coil

Contact our technical sales team today to receive factory-direct pricing for your specific ZAM steel coil requirements. We provide detailed technical consultation, application engineering support, and customized coating solutions tailored to your project specifications. Our mill-direct supply chain eliminates intermediary costs, delivering cost-effective pricing with guaranteed quality and on-time delivery performance. Request your quotation now with complete specifications including thickness, width, coating mass, base steel grade, and annual volume requirements.

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

Chris Martin

Canada

verified purchases

2025-09-10

Perfect Solution for Cold Climate Applications
Third repeat order - total 67 tons supplied over 14 months for various construction projects. ZAM coating maintains integrity in -30°C winter conditions where standard galvanized fails. Mixed container loading with three different thicknesses (0.7mm, 1.0mm, 1.5mm) accommodated our inventory needs. Technical consultation helped optimize coating selection for each application. Factory-direct pricing eliminates distributor margins. Established reliable long-term partnership.

Carlos Silva

Brazil

verified purchases

2025-09-28

Acceptable Quality with Initial Documentation Delay
Ordered 15 tons of 1.0mm ZAM steel coil for agricultural equipment manufacturing. Product quality met ASTM A653 standards after verification. Initial mill test certificates had minor discrepancies in coating mass documentation, but supplier provided corrected certificates within 5 days. Material performance in field conditions has been satisfactory. Communication improved significantly after first order. Fair experience overall.

William Taylor

Australia

verified purchases

2025-10-15

Solid Performance for Marine Application
Purchased 12 tons of 0.6mm ZAM coil for boat trailer components. Coating composition analysis matched specifications accurately. Compared quotes from 5 suppliers - this offered best mill-direct pricing. Delivery took 32 days, slightly longer than 25-day estimate due to shipping delays. Quality excellent with deburred edge conditioning. Would order again but recommend confirming logistics schedule for time-sensitive projects.

Ahmed Al-Hassan

UAE

verified purchases

2025-11-02

Reliable Supplier for Desert Climate Projects
Ordered 22 tons for solar panel mounting structures in extreme desert conditions. Base steel grade with 340 MPa yield strength met our structural requirements. Coating mass verification showed consistent Z20 (200g/m²) distribution. Express production completed in 18 days for urgent project timeline. Material performed excellently under 50°C temperatures and sandstorm exposure. Will specify ZAM coating for future infrastructure projects.

Wei Chen

Singapore

verified purchases

2025-11-20

Premium Cut-Edge Protection for Roofing Application
Supplied 35 tons of ZAM steel (0.5mm, 1000mm width, Z15 coating) for tropical climate roofing project. Cut-to-length service with ±4mm tolerance was precise. Self-healing properties of zinc-aluminum-magnesium alloy performed exceptionally in high-humidity conditions. SGS third-party inspection arranged smoothly. Corrosion resistance testing showed 10x improvement versus standard GI sheets. Highly recommended for Southeast Asian markets.

Hans Mueller

Germany

verified purchases

2025-12-08

Good Value ZAM Coils with Competitive Pricing
Purchased 18 tons of 1.2mm ZAM coil for industrial equipment enclosures. Price was 12% lower than European suppliers while maintaining ISO 9001 certification. Coating uniformity measured excellent with air-knife technology. Minor packaging issue with edge protection on two coils, but supplier immediately sent replacement protective materials. Overall satisfied with quality-price ratio for non-critical applications.

Michael Johnson

United States

verified purchases

2025-12-23

Outstanding Technical Support and Product Quality
Their technical team helped us select appropriate Z12 coating (120g/m² per side) for HVAC ductwork application. Received comprehensive EN 10204 Type 3.1 certificates with complete chemical analysis and mechanical properties. Slitting tolerance was ±2mm, better than ASTM A924 requirements. Customer service responded within 4 hours for all technical queries. This is our second order totaling 42 tons. Planning third order for Q2 project.

James Wilson

United Kingdom

verified purchases

2026-01-07

Excellent ZAM Coating Performance for Coastal Structure
Ordered 28 tons of ZAM steel coil (0.8mm thickness, 1250mm width, Z18 coating mass) for our seaside warehouse project. Mill test certificates confirmed 6.2% aluminum and 3.1% magnesium composition per JIS G3321 standards. After 18 months installation in marine environment, zero red rust on cut edges. Salt spray test results exceeded 1200 hours. Superior to conventional galvanized steel we used previously. Delivery completed in 28 days as promised.