DX51d Prepainted Galvanized Steel Coils & PPGI Coils

Product Description

DX51D PPGI coils combine a galvanized base with a tightly controlled paint system to deliver color that looks uniform under daylight and stays true after seasons outdoors. On the line you’ll notice the feel—smooth, low chatter feed; on the sheet you’ll see an even sheen with no blotching; at the jobsite you’ll hear fewer complaints because panels sit flush and touch-ups drop. The metallic layer buys time against corrosion; pretreatment and primer promote adhesion; the topcoat manages UV and chemicals; the backcoat protects from condensation. The stack works as a system, so you get predictable forming, clean bends, and fewer micro-cracks. For roofing, cladding, appliances, trailers, cabinets, and signage, these coils help you deliver surfaces that look “fresh-installed” longer, with less field maintenance.

Technical Parameters

Features & Highlights

What you gain

• Fewer line stoppages: consistent gauge and film build stabilize forming loads.

• Cleaner edges and bends: paint ductility reduces edge whitening and crazing.

• Longer repaint cycles: Z/AZ barrier + topcoat chemistry delay chalking and fade.

• Brand-true color: batch-to-batch matching reduces visible panel mismatch on large façades.

• Procurement simplicity: mainstream widths, IDs, and coil weights fit common decoilers.

How it feels

• Surface: smooth to the touch, low “drag” through tooling.

• Sound: steady, quiet run without rattle on roll-formers.

• Look: crisp, uniform color planes—no patchy gloss under sun.

  
  

Grades & Standards

What this module covers: DX grades, equivalents, and how they map to project specs.

• Grades: DX51D as baseline; options of DX52D/DX53D where deeper draw is needed.

• Standards supported on request: JIS/ASTM/EN/GB with label traceability from substrate to topcoat batch.

• Equivalents by region (e.g., SGCC/CGCC families) available to match local codes.

• Documentation: heat-numbered MTC, packing lists, and paint batch records retained for audits.

• Use cases by grade: DX51D for roofing/cladding; higher ductility grades for complex bends and appliance skins.

Why it matters: Matching grade/standard early prevents costly redesigns and keeps warranty language clean.

Dimensions

Scope: thickness, width, coil geometry, and useful tolerances.

• Thickness range: 0.11–2.5 mm; select tighter tolerance where panel flatness or section modulus is critical.

• Widths: 600–1250 mm; custom slitting to net-shape improves nesting and reduces offcuts.

• Coil weight: 3–9 t to balance handling limits and changeover time.

• IDs: 508/610 mm to fit common decoilers; request inner sleeves for gentler pay-off.

• Edge options: mill edge or trimmed; burr control for sensitive painting or laminating downstream.

Buyer tip: Base your coil weight and ID on the longest uninterrupted run to maximize uptime.

Metallic Coating

Choosing the right barrier:

• GI (Z50–Z275 g/㎡): balanced cost and corrosion resistance; typical for inland roofing and cladding.

• GL (AZ30–AZ150 g/㎡): superior heat and cut-edge performance; well suited to high-UV or coastal environments.

• Conversion coatings: promote adhesion and underfilm corrosion resistance; specify where severe humidity cycling is expected.

• Cut-edge strategy: combine AZ and adequate topcoat thickness to slow edge creep.

• Warranty alignment: select Z/AZ class to match service life targets and climate zone.

Outcome: Fewer claims, longer repaint intervals, and more predictable lifecycle cost.

Paint System & Film Build

Chemistry options:

• PE: cost-effective for interiors/mild exteriors.

• SMP/HDP: elevated UV and chalk resistance for building envelopes.

• PVDF: premium colorfastness for airports, coastal façades, brand architecture.

Film-build tuning:

• Typical build: top 8–35 μm, back 3–25 μm; 2/1 or 2/2 stacks selected by forming severity and back-side exposure.

• Texture control: matte and wrinkle finishes soften glare on large elevations.

• Adhesion and bend: primer selection and bake profile protect against micro-cracking on tight radii.

• Chemical resistance: specify for detergents, ammonia, or sea-salt exposure as relevant.

Net effect: Consistent gloss, stable ΔE, and clean bends across production lots.

Colors & Finishes

Aesthetics you can specify:

• Full RAL palette with batch-to-batch matching.

• Surface: smooth, high-gloss, matte, or wrinkle textures to manage reflectance.

• Printed/woodgrain/marble patterns for branding or interior accents.

• Back-side tones: light grey/white for enclosed spaces and easier inspection.

• Color-control protocol: pre-production lab match, ΔE tolerance agreement, and retention samples per lot.

Visual promise: Uniform planes that read calm and coherent in daylight.

Applications by Industry

Where it wins:

• Building envelope: standing-seam roofs, trapezoidal and sinusoidal cladding, rainwater systems.

• Appliances & HVAC: refrigerator panels, air-handler housings; fingerprints wipe clean with standard detergents.

• Mobility & logistics: truck bodies and trailers; scuff-resistant skins survive assembly and loading.

• Industrial: electrical enclosures, acoustic panels, shelving; tight punch quality and flatness reduce rework.

• Signage & brand fixtures: stable color, smooth edges, and easy cleaning in high-traffic spaces.

Benefit: Lower total installed cost through fewer site touch-ups and faster punch-list closure.

Processing Services

Upstream to save your downstream:

• Cut-to-length, slitting, blanking, profiling; custom widths for net-shape efficiency.

• Tolerance management: gauge and width control for optimized nesting on your tooling.

• Trial support: small-lot color proofs and forming tests before scale-up.

• Identification: color/lot segregation and barcode tagging to prevent on-site mix-ups.

• Documentation: dimensional and film-build reports included with shipments on request.

Impact: Cleaner handovers to fabricators and tighter takt time on the line.

Packaging & Logistics

Seaworthy by design:

• Inner sleeve + kraft + VCI/waterproof film + GI outer wrap + multi-axis steel strapping.

• Edge protectors and desiccants available; palletization per coil weight and route.

• IDs 508/610 mm compatible with most equipment; lifting marks for safer handling.

• Label set: product code, color, batch, net/gross weight, and QR for digital docs.

• Shipment options: partials by color/lot, photo log of loading, and tamper seals.

Result: Coils arrive dry, clean, and ready to run—no mystery scratches.

Quality & Testing

What we verify:

• Mill Test Certificate with heat and batch traceability.

• Film thickness, gloss, pencil hardness, T-bend, impact, adhesion, MEK rubs.

• Neutral salt spray and humidity tests aligned to project requirements.

• UV/exposure benchmarks for SMP/HDP/PVDF where specified.

• Third-party inspection (e.g., pre-shipment witness, loading supervision) on request.

Confidence: Spec adherence you can file with tenders and audits.

Capacity & Lead-Time

Supply signals:

• Annual throughput sized for multi-site procurement programs.

• Standard colors held for faster turnaround; custom RAL matched with agreed lead-time.

• Flexible MOQs: commercial orders typically 3–5 t per size/color; trial coils for line proving available.

• Consolidated shipping and progressive deliveries to align with project phasing.

• Post-delivery support: issue resolution SLA and replacement protocols defined upfront.

Procurement outcome: Fewer surprises, smoother schedules, cleaner cash flow.

Why Choose Us

You are not buying paint on steel—you are buying predictable uptime and brand-safe surfaces. Our coils are engineered for forming headroom, color stability, and logistics clarity. With mainstream dimensions and IDs, you avoid equipment workarounds. With documented MTCs and optional third-party oversight, you pass audits cleanly. With tuned Z/AZ classes and paint chemistries, you right-size cost to climate and warranty targets. And with barcode tracking and color segregation, you cut mix-up risk on crowded sites. The net effect: lower total cost of ownership, fewer callbacks, and a façade that still looks composed years later.

FAQ

Q1. What MOQ can you support?

Regular commercial lots often start around 3–5 tons per size/color to maximize coating line efficiency. For new projects or line trials, we can discuss smaller pilot coils to validate color and forming.

Q2. Which system should I specify for coastal projects?

Select higher AZ classes (for GL) or upper Z classes (for GI) combined with HDP or PVDF topcoats. Consider a 2/2 paint stack when the back side faces condensation or salt-laden air. Align selections with target warranty years.

Q3. Can you match an existing building color?

Yes. Share your RAL code or a physical swatch. We provide a lab match, confirm ΔE tolerance, and retain witness samples for future orders so replacements land visually seamless.

Q4. Do you provide third-party inspection and MTCs?

Yes. An MTC ships with every lot. We can arrange SGS/BV style witness, pre-shipment inspection, and loading supervision according to your PO terms.

Q5. How do you prevent transit damage?

We use a multilayer seaworthy package (inner sleeve, kraft, VCI/waterproof film, GI outer wrap, multi-axis strapping) with edge protection, desiccants, and photo logs of loading. Labels carry batch and QR data for traceability.