Heat Resistant SMP PPGL Steel Coil – Industrial High-Temperature Grade
Product Overview
Silicon Modified Polyester (SMP) coated PPGL steel coil is a high-temperature industrial color coated product designed for heat-exposed industrial environments. Built on heat-resistant galvalume steel substrate with SMP paint system, this DX51D grade delivers excellent high-temperature stability, oxidation resistance and weather durability. It is the preferred solution for industrial furnace cladding, chimney exteriors, high-temperature ductwork and power plant buildings where standard PE and HDP coatings cannot withstand sustained heat.
Why Choose CNB Heat-Resistant PPGL?
Our SMP PPGL products use high-performance silicon-modified polyester resins specially formulated for high-temperature service. We adopt optimized curing processes and galvalume substrate pretreatment to ensure paint adhesion and thermal stability at elevated temperatures. Every batch undergoes thermal cycling testing and heat aging testing to verify coating integrity and color stability under high-temperature conditions, making it reliable for continuous industrial heat exposure.
Key Specifications
| Item | Specification |
|---|---|
| Product Name | Heat Resistant SMP Pre-painted Galvalume Steel Coil |
| Base Substrate | Hot-dip Galvalume Steel (GL), minimized spangle |
| Paint System | Silicon Modified Polyester (SMP) – Topcoat + Primer + Backcoat |
| Paint Film Thickness | Top 18–22μm / Primer 5–7μm / Back 5–7μm |
| Al-Zn Coating Mass | AZ80 – AZ150g/m² (double side) |
| Steel Grade | DX51D |
| Thickness Range | 0.4mm – 1.5mm |
| Standard Widths | 1000mm, 1200mm, 1250mm, 1500mm |
| Coil Inner Diameter | 508mm / 610mm |
| Coil Weight | 4MT – 8MT per coil |
| Surface Finish | Semi-gloss / heat-stable matte |
| Color System | Standard industrial heat-stable colors |
| Applicable Standards | ASTM A792M, high-temperature industrial coating standards |
| Continuous Service Temp | Up to 200°C |
Core Advantages
- Excellent heat resistance: SMP paint + galvalume substrate withstands continuous temperatures up to 200°C.
- High-temperature oxidation resistance: Galvalume base forms stable alumina layer at high temperatures.
- Good weather stability: Maintains coating integrity and color under thermal cycling and outdoor exposure.
- Good formability: Supports roll forming, bending and flanging for chimney and duct fabrication.
- Industrial durability: Resists industrial fumes, soot and high-temperature aging.
Applications
This heat-resistant SMP PPGL coil is widely used for industrial furnace cladding, chimney exteriors, boiler buildings, high-temperature ductwork, power plant envelopes, kiln housings, steel mill buildings and high-temperature industrial roofing.
Get a Quotation
We supply heat-resistant PPGL in various coating weights and heat-stable colors for high-temperature industrial projects. Thermal cycling test reports and application-specific material recommendations are available upon request. Contact our industrial materials team for a detailed quotation and technical support.
