Hengfengshuai Electric Factory Showcase｜In‑house Production Base & Full‑Cycle Manufacturing Capabilities

Hengfengshuai Electric operates a large‑scale modern production base in Qingdao, China, supplying a complete range of power equipment for global energy and power grid projects. Main product portfolio includes distribution transformers, dry‑type transformers, box‑type transformers, pole‑mounted transformers, amorphous alloy transformers, special‑purpose transformers, low‑voltage switchgears, medium‑voltage switchgears, switch cabinets, distribution panels, compact substations, transmission steel towers, power transformers and mobile substations.
 

Integrating raw‑material processing, coil winding, core assembly, finished‑product assembly, high‑voltage testing and finished‑goods warehousing within one site, the facility achieves fully independent end‑to‑end production and enforces rigorous process control for every piece of electrical equipment.
 

The workshops are equipped with advanced automated production lines. Automatic silicon‑steel slitting and cross‑cutting production lines deliver precise cutting of core materials to reduce magnetic loss and improve transformer operational efficiency. Epoxy resin vacuum casting tanks ensure high‑quality winding manufacturing for dry‑type transformers, delivering outstanding insulation performance for indoor and urban power‑distribution scenarios. Heavy‑duty high‑torque vertical winding machines fabricate coils for large‑capacity transformers. Skilled technicians perform winding and assembly in clean‑room conditions to guarantee consistent winding quality. Core stacking equipment adopts precision positioning and clamping structures to minimise internal air gaps in iron cores and lower operating noise.
 

Upon completion of component processing, all products move to the assembly and finished‑product display area. The workshop exhibits diverse finished equipment, including extra‑high‑voltage large power transformers, medium‑sized oil‑immersed transformers, pole‑mounted distribution transformers, containerised compact substations and complete sets of switchgears. All finished goods receive professional protective packaging prior to dispatch.
 

A 500 kV extra‑high‑voltage test hall carries out full type‑tests and factory acceptance tests, performing critical tests such as lightning impulse, temperature rise and short‑circuit withstand capability. Customers and third‑party inspection teams are welcome to witness factory acceptance tests on‑site.
 

All core production procedures are kept in‑house. Iron cores, transformer windings and oil tanks are self‑manufactured to avoid quality fluctuations caused by outsourced core processes. Key raw materials are managed with batch traceability, with complete incoming‑inspection records retained for backward traceability. Both oxygen‑free copper winding and aluminium winding options are available according to project requirements; material commitments can be incorporated into formal technical agreements and sales contracts.
 

The production system complies with ISO integrated management‑system standards, and product designs conform to the IEC 60076 series standards. Customised designs can be executed to meet regional grid specifications including Chinese GB standards, American ANSI/IEEE standards, Russian GOST standards, Australian‑New‑Zealand AS/NZS standards, Brazilian INMETRO standards, South‑African SABS standards, Kenyan KEBS standards and Saudi SASO standards.
 

Enhanced custom‑engineered solutions are offered for projects in high‑altitude, hot‑tropical, salt‑spray coastal and seismic zones, featuring C5‑M anti‑corrosion coatings, seismic reinforcement and anti‑harmonic designs tailored for new‑energy wind‑solar projects. Low‑noise optimisation is available for municipal and residential‑area power‑distribution projects.
 

Every unit undergoes stringent factory acceptance testing before shipment; products failing performance indicators are barred from release. Witness‑based factory tests are supported for large‑scale grid projects. Standard delivery documentation comprises drawings, test reports, operation manuals and a full set of English‑language technical documents. Multilingual document versions are available for large‑scale overseas EPC projects.
 

Differentiated protective‑packaging solutions are adopted for export cargo. Small‑size distribution transformers are shipped fully filled with oil. Large power transformers for long‑distance ocean transportation are shipped with oil drained and nitrogen filled, fitted with shock recorders. Export wooden packages undergo IPPC heat treatment to satisfy quarantine requirements at destination ports. The logistics team evaluates over‑size‑cargo transportation and hoisting schemes for heavy‑duty equipment, enabling global delivery via sea freight, bulk carriers, China‑Europe Railway Express and overland transport.
 

The factory has established a closed‑loop SQA (Supplier Quality Assurance) quality‑management system covering supplier assessment, incoming‑material inspection, in‑process monitoring, finished‑product testing, warehousing and after‑sales traceability. Customer audits as well as third‑party inspections by organisations such as SGS and BV are accepted to satisfy strict supply‑chain access requirements of international engineering projects.
 

Products carry a standard‑1‑year warranty; extended warranty periods may be negotiated for large‑scale projects. Original‑equipment spare‑part supply is guaranteed throughout the full equipment life‑cycle. Global customers have access to 24‑hour online technical support, with on‑site overseas commissioning and acceptance‑guidance services deployable on demand.
 

Hengfengshuai Electric welcomes global partners to schedule factory visits and on‑site audits. Our integrated manufacturing capability, in‑house high‑voltage testing capacity and mature custom‑engineering services deliver stable and compliant power equipment for worldwide power‑grid, new‑energy, industrial and infrastructure projects.