What Surface Treatments & Coatings Do You Offer for Flanges?
Comprehensive surface treatments: hot-dip galvanizing (ASTM A153), black epoxy, 3PE coating (DIN 30670), PTFE lining, anti-corrosion paint, rust-preventive oil. All coatings per NACE and ISO standards with specified color and DFT.
Surface Treatment Options
| Treatment | Standard | Thickness | Application |
|---|---|---|---|
| Hot-Dip Galvanizing | ASTM A153 / ISO 1461 | 85-200 um | Outdoor structures, water pipelines |
| Black Epoxy Coating | ISO 12944-5 | 250-500 um DFT | Buried pipelines, marine splash zone |
| Fusion Bonded Epoxy (FBE) | CSA Z245.20 / AWWA C213 | 350-450 um | Oil and gas transmission pipelines |
| 3-Layer PE (3PE) | DIN 30670 / ISO 21809-1 | 1.8-3.7 mm | Long-distance buried pipelines |
| PTFE Lining | ASTM D4894 | 3-5 mm | Chemical processing |
| Zinc-Rich Primer | ISO 12944 / SSPC Paint 20 | 60-80 um DFT | Shop primer for topcoat systems |
| Polyurethane Topcoat | ISO 12944-5 | 50-80 um DFT | Weather-resistant finish, RAL color |
| Anti-Rust Oil | Internal Spec | Thin film | Temporary transit protection (3-6 months) |
Surface Preparation Standards
- Sa 2.5 (Near-White Blast) —ISO 8501-1. Standard for epoxy and polyurethane systems.
- Sa 3 (White Metal Blast) —For critical service and zinc silicate primers.
- St 3 (Power Tool Cleaning) —For touch-up and maintenance.
Custom Coating Specifications
We apply coatings to your exact specification: RAL color (any), DFT per spec, number of coats (primer + intermediate + topcoat), holiday/spark testing (100% coverage), and adhesion testing per ASTM D4541.
Ready to Place an Order?
Send us your specifications and receive a quotation within 24 hours.
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