220kvhot DIP Galvanized Combined Steel Pipe Tower for Belt Road Power Grid Construction

Product Description

Product Description

(1) We excel in steel structures for 10kV-1000kV projects. Our products utilize premium, temperature-resistant steel like Q235B to Q460C. Precision CNC machining, welding, and hot-dip galvanizing ensure superior corrosion resistance, stability, load capacity, wind, and seismic resilience. We offer tailored manufacturing, trial assembly, third-party inspection, and quality checks for reliable global projects.

(2) We use high-strength angle steel for high-voltage towers. Materials undergo strict re-inspection for properties and composition. CNC hydraulic straightening ensures perfect straightness, free from twisting or deformation.

(3) Our Technical Research Center uses advanced 3D software like TWSOild and Tekla for 3D modeling and lofting, creating a 1:1 digital model and automatically disassembling it into components.

(4) System auto-generates precise drilling, punching, cutting, trimming programs, ensuring a 100% match in hole positioning, eliminating on-site adjustments, and guaranteeing zero processing errors.

(5) Using automatic manipulators, we ensure optimal welding posture, continuous double-sided welding, and precision with a weld seam tolerance of ±0.1 mm. Achieving highly stable welds with a qualification rate of ≥99%.

(6) Automated galvanizing ensures uniform zinc coating (≥86 μm) for 40-70 years. Options for composite galvanizing or post-passivation enhance durability.

Certifications

Product Name	Transmission Line Angle Steel Tower, Lattice Angle Steel Tower, Truss-type Angle Steel Tower	Base Spread	Per Design Drawings
Model/Specification	Per Drawings / Per Voltage Level	Tower Taper	Per Design Drawings
Applicable Voltage	10kV / 35kV / 110kV / 220kV / 500kV / 750kV / 1000kV, etc.	Component Precision	Hole Position Accuracy within ±0.5mm
Tower Height	Customizable (e.g., 15m – 80m)	Overall Verticality	≤1/1000

Raw Material Incoming Inspection
Angle Steel Receipt → Material Certificate Verification → Properties/Composition Re-test → Straightening
Lofting and CNC Programming

Drawing Review → 3D Modeling & Lofting → CNC Program Generation → Process Briefing
Cutting, Punching, Drilling

CNC Angle Steel Production Line → Punching/Drilling → Stamping → Cutting → Corner Notching → Opening/Closing
Bending & Straightening
Component Bending → Hydraulic Straightening → Full Dimensional Inspection

Welding & Fabrication
Welding of Flanges, Plates, etc. → Automated Welding → Weld Grinding → Non-Destructive Testing
Hot-Dip Galvanizing (Anti-Corrosion)

Steel Plate Cutting Equipment (Laser Cutting)

Raw Material Cutting Equipment

Raw Material Photos

Raw Material Photos

Trial Assembly (Critical Process)

1:1 Ground Trial Assembly → Hole Alignment → Dimensional Verification → Documentation → Report Issuance
Cleaning, Numbering, Packaging
Component Cleaning → Numbering → Steel Band Strapping → Packaging → Labeling
Factory Inspection & Shipment
Final Inspection → Documentation (Certificates, Reports) → Loading & Shipment

Company Profile

We integrate R&D, design, production, sales, and services of power transmission towers. As a major player in China's power tower industry, we manufacture a diverse range of towers.

Located in Qingdao, our base features CNC machinery, welding robots, galvanizing lines, and testing apparatus for high capacity and efficient bulk order fulfillment.

Our quality control ensures precision within ±0.5mm, a weld pass rate of ≥99%, and a zinc coating life of 40-70 years. Compatible with 10kV to 1000kV projects.

Our team excels in custom design and R&D, offering tailored towers with comprehensive services from consultation to support.

With exceptional quality, competitive pricing, and superior service, our products are key in domestic projects and global exports, known for reliability and efficiency. We aim to enhance quality and introduce new technologies for global infrastructure support.

International Power Tower Projects Completed in 2025 (Name + Region)
No.	Project Name	Country/Region
1	Maharani Bagh to Narela 400kV Multi-circuit Transmission Line Project	Delhi and National Capital Region (NCR), India
2	Swiebodzice Overhead Transmission Line 400kV	Lower Silesian Voivodeship, Poland
3	Fontefria to Ponte de Lima Interconnection 400kV	Spain
4	Mexico City 2025-01 Transmission Tower Project	Mexico City, Mexico
5	South Sumatra No.1 Project 275kV Supporting Power Transmission Project	Musi Banyuasin Regency, South Sumatra Province, Indonesia
6	Dubai 132kV Substation and Supporting Transmission Line Project	Multiple Areas, Dubai, UAE
7	Simandou Mine 35KV Power Transmission Tower Construction Project	Simandou Mine Area, Guinea

Packing & Delivery

FAQ

1,What types of steel poles do you produce? Do you have conical steel poles, polygonal steel poles and flange steel poles?
A:We manufacture various types of structural tubular steel poles, including tapered, polygonal, and flanged poles, as well as various types of slip-joint structural poles.
 
2,What voltage levels are your steel poles suitable for? Can they be used for 110kV, 220kV power transmission lines?
A:Our company manufactures tubular steel poles covering the entire range of voltage levels: 10kV, 35kV, 66kV, 110kV, 220kV, 330kV, and 500kV. Currently, we are capable of producing tubular steel poles for every transmission voltage level utilized globally.
 
3, What is the material of your steel poles? Is Q355B steel available? Does it meet international standards?
A:The steel tubular poles manufactured by our company are typically fabricated using steel grades such as Q235, Q355, Q420, and Q460; specifically, the Q355B grade steel meets both domestic and international standards.
 
4, Can you customize steel poles according to our drawings, height requirements and on-site environment?
A:We can design and manufacture customized tubular steel poles in accordance with client drawings and requirements regarding height, site environment, and various other specifications.

5, What is the maximum height and thickness of your steel poles?
A:Our company is capable of manufacturing steel tubular poles reaching a maximum height of 120 meters, with a maximum wall thickness of 40 mm and a diameter of 3.6 meters.
 
6, What is the difference between conical steel poles and polygonal steel poles? Which one is more suitable for our project?
A:Both tapered and polygonal tubular steel poles are fabricated by rolling steel plates; however, tapered poles involve more extensive welding processes, whereas polygonal poles feature a simpler manufacturing process and lower production costs. Generally, for voltage levels below 220 kV, the polygonal design is well-suited for current projects, offering a simple manufacturing process, low costs, and a short production lead time.
 
7, Can your steel poles be used in coastal areas with high salt spray?
A:The tubular steel poles manufactured by our company are suitable for use in coastal regions characterized by high salt-spray concentrations. We are able to provide customized designs—specifically regarding material selection and hot-dip galvanizing anti-corrosion processes—to meet the unique requirements of such environments.