Important Attributes

Application	Road	Material	Stainless steel
Types	Square, Taper, Polygonal, Dual-Arm, Single-Arm, Round, Octagon	Origin	Jiangsu, China
Thickness	3M-12M	Product weight (kg)	90
Characteristics	Waterproof, high brightness, durable, easy to install, and environmentally friendly	Surface treatment	Hot-dip galvanizing, powder coating
Lighting solution services	Lighting distribution and circuit design, auto CAD design drawings, engineering installation services	Wind-resistant	180 km/h, 200 km/h
Warranty period (years)	5 years	Product name	Lamp Pole
Keyword	Street light pole	Size	custom size
Color	Customer's Request	Material	Q235, Q345, Iron, Steel
Surface treatment	Hot Hip Galvanization	Application	Highway, Road
Style	Morden	OEM/ODM	Accepted
Design	OEM ODM

Product Introduction

1. Steel Slitting and Tapered Cutting

The Raw Material: We start with high-grade carbon steel coils (typically Q235 or Q345).

The Process: The steel is unrolled and cut into a long trapezoid shape using a heavy-duty longitudinal shear. The top of the trapezoid determines the "Top Diameter," and the bottom determines the "Base Diameter" of the tapered pole.

2. Large-Scale Hydraulic Bending

This is the core of the shaping process.

The Equipment: A 12-meter to 14-meter long hydraulic press brake.

The Formation: The trapezoidal steel sheet is placed into a V-shaped die. Under immense pressure, the machine folds the flat sheet. Depending on the tool used, the pole is shaped into a Conical (round), Octagonal, or Hexagonal profile.

3. Automatic Longitudinal Welding

The Seam: After bending, the pole has a long vertical gap.

The Welding: The pole is fed into an automatic welding machine (often using Submerged Arc Welding). It squeezes the gap shut while simultaneously welding it. This ensures a deep-penetration, uniform seam that can withstand high wind pressure without cracking.

4. Mechanical Straightening

The Correction: Heat from welding can cause slight warping. The pole is placed in a straightening machine that uses sensors to detect deviations and mechanical rams to press the pole back into a perfectly straight line within strict tolerance levels.

5. Component Integration

Base Flange: The bottom mounting plate is welded to the shaft.

Service Door: A CNC plasma cutter cuts the maintenance hole, and a reinforced frame and door are welded in place.

Top Tenon: The top interface (for the lamp arm) is welded onto the narrow end.

6. Hot-Dip Galvanizing (The Anti-Corrosion Stage)

The Bath: The completed steel pole is submerged into a tank of molten zinc at 450°C.

The Result: The zinc reacts with the steel to form a series of zinc-iron alloy layers on both the interior and exterior walls. This is the only industry-standard method to guarantee a 20-30 year rust-free lifespan.

7. Electrostatic Powder Coating

The Finish: For aesthetic purposes, the galvanized pole is cleaned and sprayed with outdoor-grade polyester powder. It is then baked in a high-temperature oven. This provides the final color (Black, Grey, etc.) and adds an extra layer of UV protection.

Summary: Why Bending vs. Die-Casting?

Feature	Die-Casting (Aluminum)	Sheet Metal Bending (Steel)
Primary Use	Lamp Housing, Small Brackets	3–12m Street Light Poles
Material	Aluminum Alloy (ADC12)	Carbon Steel (Q235/Q345)
Length Limit	Usually < 1.5 meters	Up to 30+ meters
Structural Property	Brittle; low bending strength	Ductile; high wind resistance

Specification

Product Name	Lamp Pole
Size	Customized size
Pole height	Street lamp poles range from 3 meters to 20 meters, Solar street lamp poles range from 4 meters to 16 meters
Shape	Circular, octagonal, straight, square, single-arm, double-arm, polygon
Material	Q235, Q345, iron, steel
Powder coating	Pure polyester powder coating, and the color can be selected according to the RAL color card standard.