1. Product Overview

In recent years, with the rapid development of highway construction, the demand for safety guardrails has continued to grow. In response to this market demand, our company has successfully developed a PE powder coating specifically for highway guardrails by utilizing industry-leading technology and advanced production equipment.

This coating combines excellent protective performance with outstanding decorative properties. The cured coating features a smooth and even surface, rich and soft color, excellent weather resistance, outstanding environmental stress cracking resistance (ESCR), and superior low-temperature performance.

It is widely used for highway guardrails, railway fencing, municipal engineering projects, and landscaping applications.

2. Main Technical Specifications

Application Conditions

Process	Temperature	Time
Preheating	350℃	8–10 min
Dip Coating	300 ± 10℃	5–10 s
Plasticization	240 ± 10℃	3–5 min
Cooling	Water or air cooling	—

Powder Properties

Test Item	Test Method	Technical Specification
Powder Particle Size	GB/T 6554	Residue on 60-mesh sieve < 5%
Flowability	—	Floating rate > 20%
Non-volatile Content	GB/T 6554	> 99.5%

Coating Performance

Test Item	Test Method	Technical Specification
Adhesion	Peel Test	Grade 1
Impact Strength	GB/T 0040	> 21.6 J
Impact Brittleness Temperature	GB/T 5470	< -65℃
Bending Performance	GB/T 6742	1 mm
Tensile Strength	GB/T 1040	> 12 MPa
Elongation at Break	GB/T 1040	≥ 500%
Flame Retardancy	—	Qualified
Weather Resistance (1200 h)	GB/T 9344	No visible change in coating appearance
Chemical Immersion Resistance (30% HCl, 40% NaOH, 5% NaCl, 720 h)	GB/T 11547	No visible change in coating appearance

Surface Pretreatment

Recommended pretreatment methods:

Acid pickling and phosphating

Shot blasting or sand blasting (recommended for optimum performance)

Application Method

Fluidized bed dip coating (blowing and suction process)

3. Application Range

Suitable for coating applications in:

Highway guardrails

Railway fencing

Municipal engineering projects

Landscaping and urban greening projects

4. Safety and Hygiene

This product is non-toxic and environmentally friendly.

Not intended for consumption.

Ensure adequate ventilation during application and processing.

5. Packaging, Storage and Transportation

Packaging: 25 kg kraft paper bags.

Shelf life: 12 months.

Protect from direct sunlight and rain. When the ambient temperature exceeds 35℃, appropriate insulation measures should be taken during storage and transportation.