SMP Coated Color Steel Sheet - Mill Direct Supplier

Xinpeng Color Coating Co., Ltd.

Verified Custom manufacturer · 2 yrs ·

China

Customizable Rock-bottom price

$720 1-49 ton Base price

$688 50-99 ton 4.4% off

$673 ≥100 ton 6.5% off

Price validity: subject to market conditions

Supplier's customization ability

Drawing-based customization
Sample-based customization
Full customization

Quantity

Minimum order quantity: 1 ton

Shipping total: To be negotiated

Subtotal of goods US$ 720.00

Start order request

Payment and delivery

Payment:: by contract — deposit, balance after your inspection
Lead time:: confirmed with the quotation
Packaging:: standard export packing
Samples:: available on request

Product details

Technical Specifications of SMP Coated Color Coated Steel Sheet

Property	Parameter	Description
Product Name	SMP Coated Color Coated Steel Sheet	Silicon Modified Polyester (SMP) pre-painted galvanized/galvalume steel sheet
Material Grade	DX51D, DX52D, DX53D / SGCC, SGCD / G550, G300	Equivalent to ASTM A755, EN 10169, JIS G3312 substrate grades
Standard Compliance	ASTM A755 / EN 10169 / JIS G3312 / GB/T 12754	Meets international pre-painted steel coil and sheet standards
Chemical Composition (Substrate)	C ≤ 0.12%, Mn ≤ 0.60%, P ≤ 0.10%, S ≤ 0.045%, Si ≤ 0.50%	Typical low-carbon steel substrate composition for forming and coating adhesion
Coating Type	Silicon Modified Polyester (SMP)	Enhanced UV resistance and heat resistance vs. standard polyester; silicone content 5–30%
Tensile Strength	270–560 MPa	Per ASTM A755 / EN 10169; varies by substrate grade and temper
Yield Strength	140–500 MPa	Minimum yield per applicable substrate standard; grade-dependent
Elongation	≥ 16–30%	A80 elongation per EN 10169; higher elongation for deep-drawing grades
Base Metal Thickness	0.20–1.50 mm	Total thickness including coating; substrate thickness tolerance per EN 10143
Width	600–1,500 mm	Standard coil width; custom slit widths available upon request
Coating Thickness	Top coat: 15–25 µm; Back coat: 5–15 µm	Dry film thickness (DFT); primer + finish coat system; measured per ASTM D1400
Zinc / Zinc-Aluminum Coating	Z60–Z275 g/m² / AZ50–AZ150 g/m²	Hot-dip galvanized (GI) or Galvalume (GL) substrate per ASTM A653 / A792
Surface Finish	Smooth, embossed, matte, high-gloss	RAL / custom color matching available; gloss level 10–80 GU (60° angle)
Pencil Hardness	≥ 2H	Per ASTM D3363; SMP coating offers superior hardness vs. standard polyester
Application	Roofing, wall cladding, roller shutters, home appliances, HVAC panels	Suitable for outdoor architectural and industrial applications requiring UV durability
Certification	ISO 9001, SGS, BV, CE, RoHS	Third-party inspection and quality management system certification available
Packaging	Coils on steel mandrel, eye-to-sky or eye-to-wall; sheets in wooden pallet bundles	Waterproof paper + steel strip strapping; inner diameter 508 mm or 610 mm
MOQ	25 MT per order	Mixed colors and specifications accepted; lead time 15–30 days

SMP Coated Color Steel Sheet - Mill Direct Supplier

SMP coated color coated steel sheet is a premium-grade building material engineered for superior outdoor performance, combining a silicone-modified polyester (SMP) resin coating with high-strength galvanized or galvalume steel substrate. As a mill direct supplier, we deliver consistent quality across every coil and sheet, meeting the stringent demands of roofing, wall cladding, and architectural facade applications worldwide. SMP coating technology offers a balanced combination of UV resistance, flexibility, and cost-effectiveness that surpasses standard polyester coatings while remaining more economical than PVDF alternatives. Our SMP coated color coated steel sheet products are manufactured under rigorous quality control protocols, conforming to international standards including ASTM A755, EN 10169, and JIS G3322. With a service life of up to 15–20 years in moderate industrial environments, this material finds extensive application in commercial construction, agricultural buildings, and prefabricated steel structures across Asia, Europe, and North America.

SMP coated color coated steel sheet supplier

What is SMP Coated Color Coated Steel Sheet?

SMP coated color coated steel sheet refers to a cold-rolled or hot-dip galvanized steel strip coated with a silicone-modified polyester paint system through a continuous coil coating process. The SMP topcoat typically contains 30%–50% silicone modification, which significantly enhances heat resistance up to 120°C and chalk resistance compared to standard polyester coatings. The finished product features a dry film thickness (DFT) of 20–25 µm on the topcoat and 5–7 µm on the primer layer, available in a broad RAL and custom color palette.

SMP coated color coated steel sheet manufacturer

SMP Coated Color Coated Steel Sheet Manufacturing Process

Production begins with a cold-rolled steel substrate (thickness range: 0.20–1.20 mm) or hot-dip galvanized base (zinc coating: Z60–Z275 g/m²). The coil passes through a continuous coil coating line where it undergoes chemical pre-treatment, primer application, and oven curing at 220–240°C PMT (peak metal temperature). The SMP topcoat is then applied via precision roll coaters and cured at 230–245°C PMT, ensuring uniform adhesion rated at Grade 0 per ISO 2409 cross-cut test. A protective back coat of 7–10 µm is applied simultaneously to prevent reverse-side corrosion during storage and installation.

SMP Coated Color Coated Steel Sheet Technical Specifications

Our SMP coated color coated steel sheet is available in the following standard parameters:

Parameter	Specification
Base Material	Cold-rolled / Hot-dip Galvanized / Galvalume Steel
Thickness	0.20 mm – 1.20 mm (±0.02 mm tolerance)
Width	600 mm – 1,250 mm
Zinc Coating Weight	Z60 – Z275 g/m² (per ASTM A653)
Topcoat DFT	20 – 25 µm (SMP resin)
Primer DFT	5 – 7 µm (epoxy primer)
Back Coat DFT	7 – 10 µm
Tensile Strength	270 – 550 MPa (substrate grade dependent)
Gloss Level	30 – 70 GU (60° geometry, ASTM D523)
Salt Spray Resistance	≥ 500 hours (ASTM B117)
T-Bend Test	0T – 2T (no cracking, ISO 1519)
Color Options	Full RAL range + custom colors
Coil Inner Diameter	508 mm / 610 mm
Coil Weight	3 – 8 MT per coil

All products are tested for pencil hardness (≥ HB per ASTM D3363), impact resistance (≥ 9J per ASTM D2794), and MEK double rubs (≥ 100 cycles) before shipment, ensuring mill-certified quality documentation accompanies every order.

Get a Competitive Quote for SMP Coated Color Coated Steel Sheet

Partner with our mill direct supply chain to access cost-effective pricing on SMP coated color coated steel sheet with no intermediary markups. Whether you require standard stock dimensions or custom-slit coils, our technical team is ready to match your project specifications with the optimal product grade and coating system.

24/7 customer support available
Free samples for quality evaluation
Competitive pricing for bulk orders
Professional technical consultation

Contact us today to get your free quote within 24 hours!

SMP coated color coated steel sheet factory

Ratings & Reviews

4.5

Based on 8 reviews

5 5

4 2

3 1

2 0

1 0

Linda M.

United States

2025-02-02

Initial color batch inconsistency — resolved professionally

Our first order of 20 MT of 0.50 mm SMP coated sheets in a custom green shade showed slight gloss variation between two coils — one measured 38 GU and the other 52 GU at 60° geometry per ASTM D523, against our agreed 40–50 GU target. We flagged this immediately. The supplier acknowledged the issue, provided a full root-cause analysis within 48 hours, and arranged a replacement coil at no additional cost within 15 days. Subsequent batches have been consistent at 44–47 GU. Appreciated the transparent handling — confidence restored for future orders.

Ahmed R.

UAE

2025-02-24

Competitive pricing and good technical support for regional projects

We procured 50 MT of 0.60 mm SMP coated steel (Z200 zinc, RAL 9002) for warehouse cladding projects across Dubai and Abu Dhabi. The heat resistance up to 120°C is well-suited to Gulf climate conditions. Topcoat DFT averaged 21 µm — within spec but toward the lower end. Raised this with the technical team who confirmed it's within ASTM A755 tolerance and adjusted parameters for our next batch. Price was 8–10% below what we were paying through regional intermediaries. Overall a reliable supplier; technical consultation was genuinely helpful.

Ryan O.

Australia

2025-03-18

Good value SMP product — minor lead time variance on first order

Sourced 30 MT of 0.45 mm SMP coated galvalume in RAL 5010 for Queensland commercial roofing contractors. Product quality is solid — coating adhesion Grade 0 per ISO 2409, salt spray ≥500 hours per ASTM B117, and coil weights accurate at 5–6 MT each. First shipment arrived 4 days later than initially quoted, though the team communicated proactively. Pricing is noticeably better than Australian domestic distributors for equivalent spec. Free samples helped us qualify the product before committing to volume. Would order again.

Know your supplier

Xinpeng Color Coating Co., Ltd.

2 yrs on Sinoali.com

Located in China

Company information More goods

Company Profile

Xinpeng Color Coating Co., Ltd. is a specialized industrial enterprise focusing on high-performance Color Coated Steel Sheet production and global export business. We integrate independent research, production and trade, supplying standard and custom color coated steel sheets with complete material grades and color options.

Equipped with international-level production equipment and sophisticated testing instruments, we implement full-process quality inspection to guarantee corrosion resistance, surface flatness and coating durability. With abundant spot inventory, professional export packaging and efficient logistics scheduling, we support bulk orders and short lead times. Our products serve construction engineering, automotive industry, household appliances, shipbuilding and energy sectors. We uphold integrity and innovation, commit to tailored solutions and stable supply for worldwide B2B customers.