Project Overview
Project Name: Shanghai Mechanical & Electrical Engineering Design and Research Institute (SMEEDI) Hongsibu 100MW Photovoltaic (PV) Solar Power Generation Grid Connection Project
Project Scale: 100 Megawatt (100MW) Utility-Scale Solar PV Infrastructure
Structure Type: 4-Legged Galvanized Lattice Angle Steel Towers / Power Evacuation Towers
Surface Treatment: Heavy-Duty Hot-Dip Galvanization
Design & Engineering Institute: Shanghai Mechanical & Electrical Engineering Design and Research Institute Co., Ltd. (SMEEDI)
Fabricator & Supplier: Qingdao Best Steel Structure Co., Ltd. (QDBESTTOWER)
Project Background & Environmental Demands
Qingdao Best Steel Structure Co., Ltd. successfully manufactured and supplied the premium galvanized lattice angle steel towers for the 100MW Photovoltaic (PV) Solar Power Project in Hongsibu, Ningxia. The engineering and design detailing were managed by the prestigious Shanghai Mechanical & Electrical Engineering Design and Research Institute Co., Ltd. (SMEEDI).
As a signature 100MW utility-scale renewable energy initiative, the project required a robust and stable overhead transmission line to evacuate the massive solar-generated green electricity into the regional backbone grid. Located in a semi-arid desert fringe environment, the transmission towers are continuously exposed to intense solar UV radiation, frequent sandstorms, and dramatic diurnal temperature fluctuations, placing extreme demands on structural durability and anti-corrosion coating.
Engineering & Manufacturing Highlights
Optimized Lattice Design for Renewable Evacuation: To match the high-reliability parameters set by SMEEDI, our engineering team optimized the truss geometries of the 4-legged angle steel towers. The engineered lattice structures provide superior wind-load resistance against sudden desert gusts while maintaining a cost-effective steel-to-strength ratio.
Premium High-Tensile Structural Steel: To prevent structural fatigue caused by constant wind vibrations in open desert terrains, all main columns and stub angles were fabricated from certified high-strength structural steel (such as Q355B/Q420B, fully compliant with global standard equivalents like ASTM A572 or EN 10025).
Heavy-Duty Hot-Dip Galvanizing for Solar Environments: High UV exposure combined with sand abrasion can degrade inferior coatings rapidly. All tower components underwent our advanced automated hot-dip galvanization process, strictly complying with ISO 1461 / ASTM A123 standards. The thick, uniform zinc layer ensures a maintenance-free, rust-free lifespan of over 50 years under harsh desert weathering.
Certified Welding & NDT Quality Control: All critical structural joints were welded by AWS-certified welders in accordance with AWS D1.1 and GB 50205 standards. Every batch was backed by 100% Non-Destructive Testing (NDT/UT) to eliminate any micro-defects.
100% Full-Scale Factory Pre-Assembly: To ensure swift and zero-error field erection by the solar EPC team in remote terrain, a 100% full-scale prototype pre-assembly check was performed at our Qingdao plant, guaranteeing perfect hole alignment and accurate match-marking.
