Thick Coating Galvanized Steel Sheet is a high-performance galvanized steel sheet featuring an enhanced zinc coating for superior corrosion protection and extended service life. It is widely used in construction, infrastructure, industrial equipment, and outdoor engineering applications.
Material Type :
Heavy zinc coating hot-dip galvanized steel (DX51D+Z, DX53D+Z, SGHC)Width Range :
800mm – 1550mmThickness Range :
0.2mm – 6.0mmCustomizable :
YesOrder(MOQ) :
2TSpecifications
Thick coating galvanized steel sheets are manufactured through advanced hot-dip galvanizing processes, applying a heavier zinc layer to the steel surface. The increased coating thickness provides stronger protection against moisture, oxidation, and harsh environmental conditions.
These steel sheets offer excellent corrosion resistance, durability, and weather performance, making them ideal for long-term outdoor use and demanding industrial environments. The robust zinc coating helps reduce maintenance requirements while extending the lifespan of the material.
Thick coating galvanized steel sheets are widely used in roofing systems, wall cladding, agricultural facilities, industrial structures, power transmission projects, and infrastructure construction, where long-term corrosion protection, durability, and reliable performance are essential.
Thick Coating Galvanized Steel Sheet is one of our core strength products. We maintain substantial inventory to ensure rapid delivery and can also customize extra-large diameter seamless pipes according to your specific requirements. Additionally, we provide comprehensive services including spectroscopic analysis, mechanical property testing, pressure testing, and non-destructive testing (NDT).
| Grade | Grade Equivalent | Mechanical Properties | Size Range | Chemical Composition (Typical, %) |
|---|---|---|---|---|
| DC01+Z Commercial Grade Thick Coating | GB/T 2518 DC01+Z
|
Tensile 270–410 MPa
|
Thickness 0.3–12.0 mm
|
C≤0.12, Si≤0.30
|
| DC03+Z Stamping Grade Thick Coating | GB/T 2518 DC03+Z
|
Tensile 270–370 MPa
|
Thickness 0.4–10.0 mm
|
C≤0.10, Si≤0.30
|
| DC04+Z Deep Drawing Grade Thick Coating | GB/T 2518 DC04+Z
|
Tensile 270–350 MPa
|
Thickness 0.5–8.0 mm
|
C≤0.08, Si≤0.30
|
| DC05+Z Extra Deep Drawing Grade Thick Coating | GB/T 2518 DC05+Z
|
Tensile 250–330 MPa
|
Thickness 0.6–6.0 mm
|
C≤0.06, Si≤0.30
|
| DC06+Z Super Extra Deep Drawing Grade Thick Coating | GB/T 2518 DC06+Z
|
Tensile 240–320 MPa
|
Thickness 0.7–6.0 mm
|
C≤0.04, Si≤0.30
|
| Q195 Commercial Structural Grade Thick Coating | GB/T 2518 Q195+Z
|
Tensile 315–430 MPa
|
Thickness 0.3–12.0 mm
|
C≤0.12, Si≤0.30
|
| Q235B Structural Grade Thick Coating | GB/T 2518 Q235B+Z
|
Tensile 370–500 MPa
|
Thickness 0.5–12.0 mm
|
C≤0.22, Si≤0.35
|
| Q355B High Strength Low Alloy Thick Coating | GB/T 2518 Q355B+Z
|
Tensile ≥470 MPa
|
Thickness 1.0–12.0 mm
|
C≤0.24, Si≤0.55
|
| Q420B Ultra High Strength Low Alloy Thick Coating | GB/T 2518 Q420B+Z
|
Tensile ≥520 MPa
|
Thickness 1.0–10.0 mm
|
C≤0.20, Si≤0.55
|
| Q460C Extra High Strength Low Alloy Thick Coating | GB/T 2518 Q460C+Z
|
Tensile ≥550 MPa
|
Thickness 2.0–10.0 mm
|
C≤0.20, Si≤0.60
|
| ASTM A653 Grade 33 Thick Coating | ASTM A653 CS Type 33
|
Tensile 340–420 MPa
|
Thickness 0.3–12.0 mm
|
C≤0.15, Si≤0.30
|
| ASTM A653 Grade 50 High Strength Thick Coating | ASTM A653 HSLA Grade 50
|
Tensile 485–620 MPa
|
Thickness 0.8–10.0 mm
|
C≤0.23, Si≤0.40
|
| ASTM A653 Grade 60 Ultra High Strength Thick Coating | ASTM A653 HSLA Grade 60
|
Tensile ≥520 MPa
|
Thickness 1.0–10.0 mm
|
C≤0.20, Si≤0.40
|
| ASTM A653 Grade 65 Extra High Strength Thick Coating | ASTM A653 HSLA Grade 65
|
Tensile ≥550 MPa
|
Thickness 2.0–10.0 mm
|
C≤0.20, Si≤0.40
|
| EN 10152 DX51D+Z Thick Coating | EN 10152 DX51D+Z
|
Tensile 270–410 MPa
|
Thickness 0.3–12.0 mm
|
C≤0.12, Si≤0.30
|
| EN 10152 DX52D+Z Stamping Grade Thick Coating | EN 10152 DX52D+Z
|
Tensile 270–370 MPa
|
Thickness 0.4–10.0 mm
|
C≤0.10, Si≤0.30
|
| EN 10152 DX53D+Z Deep Drawing Grade Thick Coating | EN 10152 DX53D+Z
|
Tensile 270–350 MPa
|
Thickness 0.5–8.0 mm
|
C≤0.08, Si≤0.30
|
| EN 10152 S355GD+Z High Strength Thick Coating | EN 10152 S355GD+Z
|
Tensile ≥470 MPa
|
Thickness 1.0–12.0 mm
|
C≤0.24, Si≤0.55
|
| EN 10152 S420GD+Z Ultra High Strength Thick Coating | EN 10152 S420GD+Z
|
Tensile ≥520 MPa
|
Thickness 1.0–10.0 mm
|
C≤0.20, Si≤0.55
|
| EN 10152 S460GD+Z Extra High Strength Thick Coating | EN 10152 S460GD+Z
|
Tensile ≥550 MPa
|
Thickness 2.0–10.0 mm
|
C≤0.20, Si≤0.60
|
| JIS G3302 SGCC Thick Coating | JIS G3302 SGCC
|
Tensile 270–410 MPa
|
Thickness 0.3–12.0 mm
|
C≤0.12, Si≤0.30
|
| JIS G3302 SGCD1 Stamping Grade Thick Coating | JIS G3302 SGCD1
|
Tensile 270–370 MPa
|
Thickness 0.4–10.0 mm
|
C≤0.10, Si≤0.30
|
| JIS G3302 SGCD2 Deep Drawing Grade Thick Coating | JIS G3302 SGCD2
|
Tensile 270–350 MPa
|
Thickness 0.5–8.0 mm
|
C≤0.08, Si≤0.30
|
| JIS G3302 SGHC440 High Strength Thick Coating | JIS G3302 SGHC440
|
Tensile ≥440 MPa
|
Thickness 0.8–10.0 mm
|
C≤0.23, Si≤0.40
|
| JIS G3302 SGHC490 Ultra High Strength Thick Coating | JIS G3302 SGHC490
|
Tensile ≥490 MPa
|
Thickness 1.0–10.0 mm
|
C≤0.20, Si≤0.40
|
| JIS G3302 SGHC540 Extra High Strength Thick Coating | JIS G3302 SGHC540
|
Tensile ≥540 MPa
|
Thickness 2.0–10.0 mm
|
C≤0.20, Si≤0.40
|
|
Note: If you do not find a Thick Coating Galvanized Steel Sheet that meets your requirements or is suitable for your customer’s project, please contact our manager sales consultant (Email: stsalesman4@stmetal001.com) and send us your specifications and technical parameter files to obtain Customized quotation plan. |
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FAQs
Q: What types and standards of galvanized steel do you mainly supply?
A: We mainly supply hot-dip galvanized steel products including galvanized steel sheets, coils, strips, and pipes. Common base steel grades include DX51D+Z, DX52D+Z, DX53D+Z, and DX54D+Z. The zinc coating thickness typically ranges from Z20 to Z275 to meet different corrosion protection requirements. All galvanized steel products comply with international standards such as ASTM, JIS, and EN. We can also provide material test certificates (MTC) and support customized specifications according to customer requirements.
Q: Can you provide special specifications or non-standard customization? For example, extra-wide plates or pipes with specific wall thicknesses?
A: Of course. One of our advantages is our flexible customization capabilities. We can provide customized size cutting, special thicknesses, and special surface treatments (such as 2B, BA, No.4 brushed finish, mirror finish) based on your drawings or requirements. Whether it's a small trial order or a large-volume purchase, we can meet your needs.
Q: How do you guarantee the quality and consistency of materials? Do you have quality certifications?
A: Quality is our lifeline. We use direct supply from large steel mills to ensure material traceability. Each shipment comes with a Material Quality Certificate (MTC). We have our own quality control team that conducts random checks on material composition, dimensional tolerances, surface finish, and mechanical properties. Our factory is also ISO 9001:2015 quality management system certified.
Q: What are your delivery times and logistics solutions for overseas customers?
A: For standard-specification in-stock products, we can complete preparation and shipment within 7-14 days. Delivery times for customized products will be determined through negotiation based on the specific process. We have established international logistics partners who can arrange full container load (FCL), less-than-container load (LCL), or air freight according to your needs, and provide various trade terms such as EXW, FOB, CIF, and DDP, with door-to-door service.
Q: As a new customer, how do I begin cooperation? Can you provide samples for testing?
A: The cooperation process is very smooth: 1) You provide specific requirements (brand, specifications, quantity, standards); 2) We provide a quotation and technical advice; 3) After confirmation, we arrange the contract and payment; 4) Production/pickup and quality inspection; 5) Shipment and provision of documentation. We encourage sample testing. For serious customers, we can provide small-size samples to ensure that the materials fully meet your processing and application requirements.
|
Note: If you do not find a Thick Coating Galvanized Steel Sheet that meets your requirements or is suitable for your customer’s project, please contact our manager sales consultant (Email: stsalesman4@stmetal001.com) and send us your specifications and technical parameter files to obtain Customized quotation plan. |
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