I. Project Overview: A Customer’s Third Order in 2026
In July 2026, a Beirut-based steel distributor placed their third order with Wanzhi Steel: 297 tons of RAL 9002 PPGI color coated steel coil, specified at 0.6 mm thickness, 600 mm width, JIS G3312 SGCC grade.
We’d already shipped this customer twice in 2026. First a 255-ton RAL 9003 PPGI coil batch, then a 320-ton mixed order of RAL 9003 PPGI coil and galvanized steel pipe. So this third order wasn’t a trial run. It was a returning buyer coming back for more, and asking for a different color this time.
The color switch is the interesting part. Moving from RAL 9003 (Signal White) to RAL 9002 (Grey White) usually means the distributor is serving a new kind of project or a new end customer. They could have spread those orders across several mills. They kept coming back to us instead.
What follows is the full spec, why each parameter was chosen, and how our QC held up across three separate orders.
II. Order Specifications at a Glance
| Parameter | Value |
| Product | RAL 9002 PPGI Color Coated Steel Coil |
| معيار | JIS G3312 |
| درجة | 0.12 – 1.2 mm |
| سماكة | 0.6 mm |
| عرض | 600 mm |
| لون | RAL 9002 (Grey White) |
| وزن لفائف الصلب | 4.5 tons |
| Coil Inner Diameter | 508 mm (20″) |
| Customer | Lebanese Machinery Factory (Beirut-based) |
| Order Sequence | 3rd order in 2026 |
| Loading Port | Qingdao Port |
| Destination Port | Beirut Port, Lebanon |
| طَرد | Standard seaworthy export package |
Explore the full RAL 9002 PPGI steel coil product page for detailed specifications, or browse Wanzhi Steel’s complete PPGI steel sheet catalog for other thickness, width, and color options.


III. RAL 9002 Grey White: Why This Color, Not Just How It Looks
3.1 What Is RAL 9002?
RAL 9002 is listed as Grey White in the RAL Classic system. RAL 9003 (Signal White) is the bright, crisp one; RAL 9002 leans slightly grey, closer to what people call off-white. That grey tint isn’t a flaw. On a building facade it hides dust and weathering better than pure white, which is why distributors in dusty climates tend to prefer it.
3.2 Why a Lebanese Distributor Chose RAL 9002 Over RAL 9003
The customer’s previous two orders were both RAL 9003. On the third order, they switched to RAL 9002. The engineering logic behind this switch includes:
| Factor | RAL 9003 (Signal White) | RAL 9002 (Grey White) |
|---|---|---|
| Visual character | Bright, high-contrast white | Soft, muted off-white |
| Glare reduction | High reflectivity, can cause glare | Lower reflectivity, reduced glare |
| Dirt concealment | Shows dust and stains easily | Hides surface dust and minor stains |
| UV performance | Good, but bright whites show fading sooner | Grey undertone masks early color shift |
| Aesthetic versatility | Cleanroom, modern architecture | Industrial, residential, appliance |
| Typical application | Commercial facades, clean panels | Roofing, wall cladding, appliance shells |
In the Lebanese market, a fine mineral dust settles on exterior surfaces and never really goes away. RAL 9002 keeps buildings looking clean longer between washes, which matters for residential roofing and warehouse wall panels around Beirut and Mount Lebanon.
3.3 RAL 9002 in Appliance Manufacturing
RAL 9002 is also a common pick for home appliance steel shells — refrigerator and washing machine bodies, air conditioner housings, microwave panels. That this customer switched to it suggests they may be moving into appliance-grade steel, which pays better than standard construction PPGI.
For more RAL color options and custom color matching (ΔE ≤ 1.0), visit the Steel Coil RAL Color page.
IV. 0.6 mm × 600 mm: Why These Numbers
4.1 Why 0.6 mm Thickness?
The previous two orders ran at 0.45 mm and 0.48 mm. This one steps up to 0.6 mm, roughly a third thicker. That change tracks directly to what the coil gets used for:
| سماكة | Typical Application | Why |
|---|---|---|
| 0.3 – 0.4 mm | Interior ceiling panels, decorative | Minimal structural load |
| 0.45 – 0.5 mm | Standard roofing, wall cladding | Balance of cost and wind resistance |
| 0.6 mm | Industrial roofing, structural decking, appliance shells | Higher load-bearing, impact resistance |
| 0.8 – 1.0 mm | Heavy-duty structural panels, ducting | Maximum rigidity |
At 0.6 mm, the coil is thick enough for roll-forming into load-bearing roofing profiles — such as trapezoidal sheets with 35–45 mm rib height — without oil-canning or deflection under foot traffic during installation. It also provides sufficient rigidity for appliance panel stamping, where the steel must hold flatness through die-cutting and bending without edge waviness.
4.2 Why 600 mm Width?
Standard PPGI widths run from 600 mm to 1250 mm. This customer’s earlier orders were 730, 810, and 1145 mm. Going down to 600 mm, the narrowest standard width, was a deliberate move, not a leftover spec.
600 mm width is optimized for:
- Narrow-profile roll-forming lines: Many Middle Eastern roll-forming machines are designed for 1000 mm or narrower coil feed. A 600 mm coil fits directly without slitting, reducing processing waste and setup time.
- Appliance panel production: Home appliance steel shells often require narrow coil feed to match die widths. A 600 mm coil can be fed directly into stamping lines for refrigerator side panels or washing machine top covers.
- Logistics efficiency: Narrower coils are easier to handle in warehouses with limited forklift clearance. A 600 mm wide coil at 0.6 mm thickness weighs approximately 2.83 kg per linear meter — manageable for manual positioning at smaller fabrication shops.
- Container loading optimization: 600 mm coils nest more compactly in 20-foot or 40-foot containers, allowing higher tonnage per shipment and reducing per-ton freight cost.
4.3 Thickness Tolerance per JIS G3312
JIS G3312 sets the thickness tolerance for prepainted galvanized steel sheet. At 0.6 mm SGCC grade, the standard allows ±0.04 mm (for widths ≤ 600 mm). Our internal QC target is ±0.02 mm — half of that — because the customer’s downstream roll-forming lines need consistent feed to avoid jams.
V. JIS G3312 SGCC: The Standard Behind the Steel


5.1 JIS G3312 Standard Overview
JIS G3312 is the Japanese Industrial Standard for Pre-coated Hot-Dip Galvanized Steel Sheet and Strip. It sits alongside ASTM A755 (US) and EN 10169 (European) as one of the three main standards for prepainted steel. In Middle East and Southeast Asian trade, it’s the one buyers actually ask for, partly because Japanese mills set the early quality benchmarks across the region.
The standard covers:
- Base steel quality and grade classification
- Metallic coating (zinc layer) quality requirements
- Paint coating system: thickness, hardness, adhesion
- Dimensional tolerances and surface appearance
- Durability testing: salt spray resistance, UV resistance
5.2 SGCC Grade: What It Means
SGCC stands for Steel Galvanized Cold Commercial — a commercial-grade hot-dip galvanized cold-rolled steel sheet. It is the most common substrate grade for color-coated coils used in construction and general fabrication.
| Property | SGCC Typical Value |
|---|---|
| Base metal | SPCC (cold-rolled low-carbon steel) |
| Tensile strength | ≥ 270 MPa |
| Yield strength | ≥ 205 MPa |
| Elongation | ≥ 20% (for 0.4–0.6 mm range) |
| Galvanizing method | Hot-dip galvanizing |
| Typical applications | Roofing, wall panels, general-purpose formed parts, appliance shells |
SGCC is a commercial grade — moderate formability, good cost. If a job needs deeper drawing or more structural strength, we step up to SGCD (drawing grade) or SGC340–570 (structural grade). For this customer’s roofing and appliance work, SGCC was the right call on formability, strength, and price.
For a deeper technical breakdown of JIS G3312 and the SGCC grade, see the 320-ton Lebanon repurchase order case study, which includes a full comparison of zinc coating levels Z60 through Z275.
5.3 Coating System Requirements
JIS G3312 mandates the following minimum coating thickness for prepainted steel:
| Layer | Minimum Thickness | Function |
|---|---|---|
| Primer | 5 – 10 μm | Corrosion inhibition, paint adhesion |
| Topcoat | ≥ 15 μm | Color, UV protection, weather resistance |
| Back coat | ≥ 5 μm | Corrosion protection, process compatibility |
Wanzhi Steel’s standard PPGI coating system for Middle East-bound orders typically applies a topcoat of 20 μm + primer of 5 μm (exceeding the JIS minimum) with a 7 μm back coat. For the Lebanese Mediterranean climate, the customer can also select PVDF (fluorocarbon) coating for maximum UV resistance — a recommendation detailed in the 255-ton Lebanon loyal customer case.
VI. Lebanon’s Mediterranean Climate: Why RAL 9002 PPGI Coil Performs
6.1 Three Climate Challenges for Exterior Steel in Lebanon
Coated steel faces three specific stresses in Lebanon:
Challenge 1: Coastal Salt Spray (Beirut, Tripoli)
The Mediterranean coastline has a high salt spray deposition rate — annual average ≥ 800 mg/m²·d in coastal urban areas. This accelerates red-rust formation on inadequately protected steel. JIS G3312 SGCC with a zinc coating of Z120 or higher provides the sacrificial cathodic protection needed for coastal exposure.
Challenge 2: High UV Exposure (2,800+ sunshine hours/year)
Lebanon receives over 2,800 hours of annual sunshine. Standard PE (polyester) coatings begin to show gloss loss and color shift after 5–7 years under this UV load. RAL 9002’s grey-white undertone provides a natural advantage: the muted tone masks early-stage color fade more effectively than bright whites or saturated colors, extending the visual service life between repaint cycles.
Challenge 3: Thermal Cycling (Coastal to Mountain)
Lebanon’s temperature runs from 35°C summer peaks on the coast to sub-zero winter nights in Mount Lebanon at 1,500+ m. That swing expands and contracts the coating repeatedly. JIS G3312 requires the coating to pass a flexibility test (2T–3T bend, no cracking), so it bends with the steel instead of flaking off.
6.2 Recommended Coating System for Lebanon-Bound PPGI
| Coating Layer | PE (Standard) | PVDF (Recommended for Coastal) |
|---|---|---|
| Topcoat | 20 μm polyester | 20–25 μm fluorocarbon |
| Primer | 5 μm | 5 μm |
| Back coat | 7 μm | 7–10 μm |
| UV resistance | 1,000 hours QUV-B | 3,000+ hours QUV-B |
| Color retention life | 7–10 years | 15–25 years |
| Salt spray resistance | ≥ 500 hours | ≥ 1,000 hours |
| Cost premium | Base | +30–40% |
The steel grade sets the baseline; the coating system decides how long the coil actually lasts on a Lebanese rooftop. Our sales team sits down with each customer shipping to the region and matches the coating to where the steel will end up.


VII. Three Orders, One Supplier
7.1 What Three Orders Prove
One order shows you can make the product. Two shows it held up. A third, with a different spec each time, shows the customer trusts your engineering, not just your factory floor.
Here is what changed between orders:
- Color change (RAL 9003 → RAL 9002): The customer is widening their product range. They trust us to hold the same consistency in a new color.
- Thickness increase (0.45 mm → 0.6 mm): A move into heavier-duty roofing or appliance panels.
- Width reduction (730–1145 mm → 600 mm): Tuned for a specific processing line, and they trust us to hold tight tolerances on the narrow width.
- Product simplification (mixed PPGI + GI pipe → single PPGI line): A focused production run this time.
Any one of those changes is a risk on its own. A new color can expose weak matching. A thicker gauge pushes the rolling mill harder. A narrower width tests the slitter. The customer stacked all three into one order without a trial batch. That tells you what they think of our consistency.
7.2 The Cost of Switching Suppliers
A common question in steel procurement is: “Why doesn’t the customer just get three quotes and pick the cheapest?” The answer is that supplier switching costs are real and hidden:
- Material consistency risk: Different mills produce steel with different texture, gloss, and color — even for the same RAL code. A ΔE color difference of 1.5–2.0 between suppliers is common and visible to the naked eye on adjacent building panels.
- Tolerance variance: Different mills have different thickness tolerance control. A switch from ±0.02 mm to ±0.05 mm can cause roll-forming jams and die damage.
- Logistics re-setup: A new supplier means new customs documentation, new port relationships, new payment terms — each adding 5–15 days to the procurement cycle.
- Quality dispute exposure: With a new supplier, the first quality issue becomes a blame game. With an established supplier, there is a pre-existing quality baseline and a resolution process.
When a customer reorders a third time, they’re telling you the hidden costs of switching beat any price gap a new mill might offer. Trust like that gets built one shipment at a time.
VIII. Quality Control & Inspection Standards
8.1 Production Line QC Checkpoints
| Inspection Stage | Test Item | Method | معيار |
|---|---|---|---|
| Substrate inspection | Zinc coating weight | Stripping method | JIS G3302 |
| Coating thickness | Top + back coat | Magnetic gauge | GB/T 13448 |
| Color consistency | ΔE vs. RAL standard | Spectrophotometer | ΔE ≤ 1.0 |
| Paint adhesion | Cross-cut test | Tape pull | ISO 2409, Class 0–1 |
| Bend flexibility | T-bend test | 2T–3T bend | No cracking |
| Impact resistance | Reverse impact | 9J drop test | No paint peeling |
| Salt spray | Corrosion resistance | ASTM B117 | ≥ 500 hours (PE); ≥ 1000 hours (PVDF) |
| Thickness verification | Micrometer | 5-point measurement | ±0.02 mm target |
8.2 Third-Party Inspection Support
Wanzhi Steel supports customer-designated third-party inspections by SGS, BV, and TÜV. The Lebanese customer has previously requested SGS inspection on a 2,000-ton HDP PPGL order, where the inspection covered ISO 9001 and GCC certification verification, production-line sampling, thickness testing, coating adhesion, and salt spray testing — all results meeting customer requirements.
For this third order, every coil ships with a Mill Test Certificate (MTC) recording:
- Chemical composition (C, Si, Mn, P, S)
- Mechanical properties (yield strength, tensile strength, elongation)
- Zinc coating weight (g/m², both sides)
- Paint coating thickness (top + back, μm)
- Color verification (RAL code + ΔE value)
IX. Packaging & Shipping to Beirut Port
9.1 Export Packaging Standard
Each coil is packaged in Wanzhi Steel’s standard seaworthy export configuration:
- Inner layer: Waterproof kraft paper — moisture barrier
- Middle layer: High-density polyethylene (HDPE) film — salt spray barrier
- Edge protection: Galvanized steel corner protectors — impact distribution
- Outer securing: Steel strapping (6 bands per coil) — coil integrity during handling
- Optional: Wooden pallet or cradle for floor-loaded container shipments
This packaging is verified to withstand 15+ days of sea freight from Chinese ports (Qingdao, Tianjin) to Beirut Port, including temperature and humidity variations through the Indian Ocean and Suez Canal transit.
9.2 Beirut Port Customs & Clearance
Wanzhi Steel’s Middle East trade team is experienced with Beirut Port customs procedures:
- HS Code: 7210.70.10 (painted, coated, or varnished flat-rolled products of iron or non-alloy steel)
- Required documents: Commercial invoice, packing list, bill of lading, MTC, certificate of origin (FORM A for GSP preference where applicable)
- Typical clearance time: 3–7 working days after vessel arrival
- Payment terms supported: T/T (30% deposit + 70% against B/L copy)


X. Why Choose Wanzhi Steel for PPGI Coil Supply
10.1 Complete Product Matrix — One-Stop Sourcing
Wanzhi Steel’s product line covers the full spectrum of coated steel products. A customer can source PPGI coil, PPGL coil, galvanized steel coil (GI/GL), galvanized steel pipe, corrugated steel sheet, and printed color-coated steel from a single supplier — reducing procurement communication overhead and ensuring material consistency across product categories.
That one-stop range shows up in this customer’s own buying: PPGI coil in one order, PPGI plus galvanized pipe in another, then a single-product PPGI run on the third. Same supplier each time.
10.2 RAL Color Expertise
Wanzhi Steel runs a full RAL color chart matching system, checked by spectrophotometer to ΔE ≤ 1.0 against RAL standards. We send customers color comparison photos and videos before and after production. Middle East distributors ask for this because some have been burned by suppliers shipping the wrong shade.
Dedicated RAL color product pages include:
- RAL 9002 PPGI Steel Coil — Grey White
- RAL 1015 PPGI/PPGL Coil — Light ivory color
- RAL 9003 PPGI Steel Coil — Signal White
Custom colors beyond the RAL standard are supported with sample matching.
10.3 Middle East Market Specialization
Wanzhi Steel’s foreign trade team has served customers across multiple Middle East project cases, including:
- Lebanon: PPGI coil, GI sheet, galvanized pipe (1,300+ tons cumulative since 2022)
- Iraq: 1,200-ton color-coated coil order delivered in 10 days
- Iraq: 330 tons RAL 9003/RAL 5015 color-coated GI coil
- UAE/GCC: RAL 9002 PPGI for roofing construction (SASO/ESMA compliant)
The team knows the region’s salt-spray and UV exposure, handles Beirut Port and Gulf customs paperwork, works in T/T and L/C like everyone else there, and replies to inquiries within a day, in Arabic or English.
10.4 Customization Capability
Every parameter in this order — 0.6 mm thickness, 600 mm width, RAL 9002 color, JIS G3312 SGCC grade — represents a custom specification. Wanzhi Steel’s production lines support:
- سماكة: 0.12 – 4.0 mm (tolerance ±0.02 mm)
- عرض: 600 – 1500 mm (tolerance ±5 mm, slitting available)
- طلاء الزنك: Z30 – Z275 g/m² (GI substrate); AZ30 – AZ150 g/m² (GL substrate)
- Paint type: PE, SMP, HDP, PVDF, PU
- Surface texture: Glossy, matte, fine sand, orange peel, embossed
- لفة الوزن: 3 – 8 tons per coil (customizable)
- Coil ID: 508 mm (20″) or 610 mm (24″)
10.5 Let the Repurchase Rate Speak
Wanzhi Steel’s Middle East repurchase rate runs above 90%. This one Lebanese customer placed three orders totaling 872 tons in 2026, and over 1,300 tons since 2022. You don’t hit numbers like that by being the cheapest quote. You get there by shipping the same quality every time, answering emails, and not missing deliveries.
For RAL color charts, product catalogs, or specification quotations, contact Wanzhi Steel’s Middle East sales team.
Contact Information:
- Email: info@wanzhisteel.com
- WhatsApp: +86-18736065220
- Website: www.wanzhisteels.com
XI. FAQ — Common Questions About RAL 9002 PPGI Coil
XII. Conclusion
Marketing pages love to claim “trusted by customers in 100+ countries.” The number I care about is smaller and harder to fake: how many come back and order again.
One order is a transaction. Two is a satisfied buyer. Three, each with a different color, thickness, and width, is trust.
This 297-ton RAL 9002 order isn’t just another shipment out the door. It’s a distributor who ran our line twice, liked what they got, then widened their own product range and handed us the bigger, more varied order. That’s the bar we hold ourselves to. Not “can we ship one coil,” but “will they call us for the next one.”
If you’re a distributor, contractor, or developer who needs a PPGI supplier that holds the same quality across repeat orders, with real RAL color control and Middle East experience, we should talk.
Browse the full Wanzhi Steel project portfolio for more cases from Lebanon, Singapore, Iraq, and the GCC.



