As a professional Substation Steel Structure manufacturer in China, Maotong would like to provide you high quality 220kV Electrical Substation Gantry Equipment Support Structures. Constructing a substation requires absolute precision. Unlike standard transmission towers, Substation Gantries (A-frames/Pi-frames) and Equipment Supports must perfectly align with heavy electrical equipment like disconnectors, CTs, and PTs. Our support structure has an accuracy control of ±0.03mm, effectively solving the problem of mismatch.
At Qingdao Maotong, we don't just manufacture steel; we ensure structural compatibility. Our high quality 220kV Electrical Substation Gantry Equipment Support Structures ensure that your heavy equipment such as disconnectors, transformers, circuit breakers, etc. can be accurately and stably installed, eliminating the trouble of field installation mismatch, and making your substation construction a success. Our engineering team can detail your primary design drawings into shop drawings, ensuring that every bolt hole matches your electrical equipment layout, eliminating on-site modification risks.
Incoming/Outgoing Gantries: H-Beam or Lattice type structures for high-tension line termination.
Busbar Supports: Rigid structures to support tubular or flexible busbars.
Equipment Stands: Customized supports for Lightning Arresters, Circuit Breakers, and Isolators.
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Parameter |
Specification Details |
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Structure Type |
Lattice Column / H-Beam Column / Steel Pipe Column |
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Voltage Class |
33kV up to 500kV |
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Material Standard |
Q355B (Tensile Strength ≥ 470 MPa) / ASTM A572 Gr.50 |
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Galvanization |
Extra-Heavy Coating (Avg. 100μm) for chemical/industrial zones |
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Welding Standard |
AWS D1.1 / CWB (Full Penetration Welding for critical joints) |
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Pre-assembly |
100% Ground Trial Assembly before delivery (Essential!) |
Accuracy of ±0.3mm: We use CNC plasma cutting center to process the connecting plate, and the accuracy of key bolt holes is controlled within ±0.3mm.This way expensive insulator equipment can be installed smoothly, directly saving you valuable construction time, eliminating additional costs and delays due to modifications.
100% pre-assembly: Every complex structure is 100% ground trial assembled in our factory before shipment. We'll put all the pieces together and verify all the connections. This way you receive a complete 220kV Electrical Substation Gantry Equipment Support Structures that has been verified and guaranteed to be assembled, greatly reducing the uncertainty of field installation and lifting risks.
High adaptability: we use an average of 100μm or more thick hot dip galvanized layer, which is far beyond the ordinary standard.In corrosive environments, our structures provide corrosion protection for years, reducing your life-cycle maintenance costs and ensuring long-term grid stability.