Views: 0 Author: Site Editor Publish Time: 2026-09-22 Origin: Site
KEY word: DINGPRECISION, BPA-free coating, capability profile, zirconium, CNAS
DINGPRECISION BPA-free Coating Capability Profile — Certifications, Production Line, Testing & Cases Platforms: Website + Alibaba.com + LinkedIn ~2,200 words Keywords: DINGPRECISION, BPA-free coating, capability profile, zirconium, CNAS > Key takeaway: DINGPRECISION (Dingyi Industrial) provides full-chain BPA-free sheet metal coating capability: zirconium pretreatment line, two-spray two-bake coating line, CNAS/CMA-accredited testing, and a proven 30-day air fryer BPA-free switch case. All processes — laser cutting, bending, welding, coating — are in-house with no outsourcing.
DINGPRECISION (Dingyi Industrial) is a solution-focused manufacturer specializing in sheet metal fabrication and surface treatment. The company owns in-house production lines for laser cutting, CNC bending, welding, and coating — no outsourcing, full-chain quality control from steel plate to finished product. In the BPA-free coating transition field, DINGPRECISION is an industry pioneer, having completed mass production validation of waterborne acrylic BPA-free systems.
Item | Details |
Company | DINGPRECISION / Dingyi Industrial |
Core Business | Sheet metal fabrication, surface treatment (coating/powder), BPA-free coating solutions |
Production Lines | Laser cutting → bending → welding → pretreatment → coating → testing (all in-house) |
Pretreatment | Zirconium conversion coating — no P, no Cr, film weight 50–80 mg/m² |
Coating | Two-spray two-bake line (waterborne/solvent-compatible, electrostatic) |
Testing | CNAS/CMA-accredited lab partnership, BPA migration testing, LoD 1 μg/kg |
Certification | ISO 9001 Quality Management System |
DINGPRECISION has fully replaced zinc phosphating with zirconium conversion coating: - Bath: Zr concentration 0.5–1.0 g/L, pH 4.0–5.0, room temp–40°C - Film weight: 50–80 mg/m² (XRF online monitoring) - Process: Degrease (60°C/5min) → rinse → zirconium (room temp/2min) → rinse → DI rinse → dry - Phosphorus-free, chromium-free, simple waste treatment, environmentally compliant - Compatible substrates: cold-rolled steel, galvanized steel, aluminum and alloys
Parameter | Value |
Application | Electrostatic spray (waterborne/solvent-compatible) |
Primer spray | Voltage 60kV, pressure 0.15 MPa, flow 120 ml/min, distance 25 cm, 20–25 μm |
Primer cure | 180°C/20min (tunnel oven) |
Topcoat spray | Same parameters, 25–30 μm |
Topcoat cure | 200°C/15min (tunnel oven) |
Total thickness | 45–55 μm (primer + topcoat) |
Monthly capacity | 5,000+ units (air fryer inner pot equivalent) |
DINGPRECISION partners with CNAS/CMA-accredited labs for: - BPA migration testing (EN 13130 / GB 31604.5, LoD 1 μg/kg) - BPS/BPF/BPAF migration testing - Cross-cut adhesion test (GB/T 9286) - Salt spray test (GB/T 1771) - Boiling water resistance test - Film thickness measurement (XRF) CNAS report core data:
Test Item | Method | LoD | Result |
BPA migration | GB 31604.5 / EN 13130 | 1 μg/kg | Not Detected |
BPS migration | EN 13130 | 1 μg/kg | Not Detected |
BPF migration | EN 13130 | 1 μg/kg | Not Detected |
Adhesion (cross-cut) | GB/T 9286 | — | Grade 0 |
Salt spray | GB/T 1771 | — | 500h Pass |
Process | Equipment | Capability |
Laser cutting | Fiber laser cutter | Carbon steel 0.5–6mm, stainless 0.5–4mm, aluminum 0.5–3mm |
CNC bending | CNC press brake | Max 4000mm, precision ±0.1mm |
Welding | TIG/spot/laser welding | Stainless/carbon steel/aluminum |
Pretreatment | Zirconium line | No P, no Cr, continuous production |
Coating | Two-spray two-bake line | Waterborne/solvent-compatible |
Testing | In-house lab + CNAS partner | BPA/adhesion/salt spray/film thickness |
Full in-house process advantages: (1) stable quality control — no reliance on subcontractor quality; (2) controllable lead time — no dependency on subcontractor scheduling; (3) complete traceability — from steel batch to finished product shipment, full-chain traceable.
Case: Air Fryer Inner Pot BPA-free Transition - Client: An air fryer brand exporting to Europe - Background: Received EU buyer’s BPA compliance requirement; original epoxy coating contained BPA 15–30 mg/kg - Transition period: 30 days - Solution: Epoxy → waterborne acrylic + phosphating → zirconium - Result: BPA residue non-detectable (<1 μg/kg), adhesion Grade 0, yield 99.2% - Net cost change: +7% Full case study: See “How We Achieved BPA-free in 30 Days: Air Fryer Inner Coating Switch Case Study.”
DINGPRECISION provides the following templates for procurement reference: - DoC (Declaration of Compliance) Template — Per EU 2024/3190, ready to fill in - Audit Checklist PDF — 7-dimension scorecard, printable for on-site use - BPA-free Coating Supplier Declaration Template — Send to coating suppliers for signing DINGPRECISION (Dingyi Industrial) — Sheet metal fabrication and surface treatment solutions provider, BPA-free coating pioneer. Full in-house process chain (laser cutting → bending → welding → coating), zirconium pretreatment + two-spray two-bake + CNAS testing, BPA-free mass production achieved. For BPA-free coating solutions, audit arrangements, or document requests, contact DINGPRECISION.
