Description

Product Introduction

◎Pole material and anti-corrosion: Adopting Q355B low-alloy high-strength steel and a four-layer composite anti-corrosion process (hot-dip galvanizing + epoxy zinc-rich primer + polyester powder intermediate layer + fluorocarbon topcoat), achieving an ultra-long anti-corrosion life of 20 years. Customized solutions such as silanization and glass flake coatings are used to adapt to extreme environments like coastal areas and chemical industrial zones.

◎Highly flexible design: Through a segmented tapered pole, chute lifting system, and quick plug-in structure, it achieves full height coverage from 3 to 20 meters, supports dynamic adjustment and "one pole with multiple uses", and ensures stability through finite element analysis and wind load resistance optimization.

◎Full life-cycle economy: Calculated over a 10-year cycle, the adjustable height and anti-corrosion design reduce replacement and maintenance costs by 70%, and the comprehensive net income is 78% higher than that of traditional street lights, achieving a sustainable "high input - high return" model.

Pole Material and Anti-Corrosion Process

Main pole material: Q355B low-alloy high-strength steel

Material properties:

◎Strength advantage: Yield strength ≥355MPa (ordinary Q235 steel is only 235MPa), wind resistance rating up to level 12 (wind speed 32.7m/s), and the anti-deformation ability is 40% higher than that of traditional poles.

◎Toughness optimization: Adding trace niobium (Nb) and vanadium (V) elements to form a fine-grain strengthened structure, maintaining good impact toughness in a low-temperature environment of -20℃, avoiding the risk of freezing cracking in northern regions.

◎Corrosion-resistant base: Carbon equivalent (CEV) ≤0.42%, sulfur (S) and phosphorus (P) contents are controlled below 0.035%, reducing cracks in the welding heat-affected zone and intergranular corrosion tendency.

Comparative data (taking an 8-meter pole as an example):

Parameter	Q355B Steel	Q235 Steel
Weight (kg)	185	210 (needs thicker wall to meet standards)
Wind pressure deformation	≤5mm (level 12 wind)	≥12mm
Service life	20 years (when anti-corrosion layer is intact)	8 years (prone to rust and fracture)

Four-layer composite anti-corrosion system

◎Hot-dip galvanized base layer:

Using 85μm thick hot-dip galvanizing (GB/T 13912 standard), the zinc layer and steel form an Fe-Zn alloy layer. In a coastal high-salt spray environment (Cl⁻ concentration 5000mg/L), the neutral salt spray test (NSS) can reach 2000 hours without red rust (traditional cold galvanizing is only 200 hours).

◎Epoxy zinc-rich primer layer:

Spraying 60μm dry film thickness epoxy zinc-rich paint (zinc powder content ≥80%), through the sacrificial anode protection effect, delaying the zinc layer consumption rate. After UV accelerated aging test (QUV-B, 500 hours), the adhesion still reaches 5MPa (national standard ≥3MPa).

◎Polyester powder intermediate layer:

Electrostatic spraying 120μm thick outdoor polyester powder, with weather resistance up to ISO 12944 C5-M level (industrial corrosion environment). It has no chalking after 5 years of actual measurement in the humid and hot climate of Wanning, Hainan (annual humidity >85%).

◎Fluorocarbon topcoat protective layer:

Rolling 20μm thick PVDF fluorocarbon coating (containing 70% fluororesin), with a contact angle >95° (superhydrophobicity), which can self-clean and remove more than 90% of dust and bird droppings, reducing the frequency of manual cleaning.

Anti-corrosion performance comparison:

Test Item	This Product (Four-Layer Composite)	Traditional Two-Layer Galvanizing + Painting
Neutral salt spray test	5000 hours without red rust	Pitting corrosion occurs after 800 hours
UV aging (QUV-B)	3000 hours color difference ΔE < 3	800 hours ΔE > 5 (obvious fading)
Artificial accelerated corrosion (CYCLIC)	2000 cycles without blistering	Blistering occurs after 500 cycles

Highly Flexible Design

Height (m)	Applicable Scenarios	Lamp Power	Pole Spacing (m)	Average Illuminance (lx)
3-4	Rural branch roads/residential roads	30W	15-20	15-20
6-8	Urban secondary roads/industrial parks	60W	25-30	25-30
10-12	Urban main roads/expressways	100W	35-40	30-35
15-20	Ports/ large squares	150W	50-60	20-25

Modular adjustable height structure design

◎Segmented pole:

Using 2-3 sections of tapered poles (upper diameter 76mm, lower diameter 165mm), connected by M20 high-strength bolts, each section is 3-6 meters long, which can be freely combined to the target height.

◎Chute lifting system:

Integrating stainless steel guide rails + pulley blocks inside the pole, combined with a manual winch or electric lift, realizing the overall lifting of the lamp (maximum load 50kg), facilitating later maintenance.

◎Quick plug-in structure:

Developed a patented snap-on connector (Patent No.: ZL2023XXXXXXX), the installation efficiency is 3 times higher than that of traditional flange connections (the installation time of a single pole is shortened from 2 hours to 40 minutes).