Hebei Huafeng supplies anti-corrosion transformer parts for 1 GW offshore wind project

Hebei Huafeng Industrial Group says it supplied specialized transformer components for CGN Yangjiang Fanshi II, a deep-offshore wind project off Guangdong with 58 turbines and a 500 kV offshore booster station. The work highlights the corrosion and maintenance challenges of equipment operating 70 kilometers offshore in high-salt, high-humidity conditions.

Why it matters: - Deep-offshore wind projects put transformer components in one of the harshest operating environments in energy infrastructure. - Corrosion, vibration, and difficult maintenance access can drive shutdown risk and raise lifecycle costs. - Component reliability matters because failures offshore can be expensive and slow to fix.

What happened: - Hebei Huafeng Industrial Group Co., Ltd. engineered and supplied offshore wind transformer components for the CGN Yangjiang Fanshi II offshore wind project. - The project has a planned capacity of 1 GW. - The project uses a 500 kV offshore booster station to collect and transmit electricity. - The wind farm is located about 70 kilometers off the coast of Yangjiang in Guangdong Province. - The site operates in water depths ranging from 46 to 53 meters. - The project includes 58 turbines, with 25 rated at 16.2 MW and 33 rated at 18 MW.

The details: - The offshore environment exposes transformer equipment to salt spray, high humidity, ultraviolet radiation, wave action, and typhoon-related vibration. - Huafeng says its radiator design uses a dual longitudinal-seam structure to reduce leakage risk caused by thermal cycling and platform vibration. - Radiators can be made from cold-rolled steel, 304 or 316L stainless steel, or marine-grade aluminum alloys. - Steel surfaces receive shot blasting to Sa 2.5 cleanliness before coating. - The coating system includes a zinc-rich epoxy primer, an epoxy micaceous iron oxide barrier, and an aliphatic polyurethane or polysiloxane topcoat. - Total dry film thickness exceeds 300 micrometers. - Radiators can also be hot-dip galvanized to ISO 1461 for added abrasion and impact resistance. - Huafeng supplies wafer butterfly valves from the BDY series, flanged ball valves, and vacuum valves for transformer oil circuits. - The valve seats and flange gaskets use fluororubber (FKM) or hydrogenated nitrile butadiene rubber (HNBR). - The company also makes air-sealed and capsule-type corrugated oil conservators. - Fasteners, hinge pins, and indicator linkages use grade 316 stainless steel or marine-coated hardware.

Between the lines: - Huafeng is positioning its offshore work as proof that its products and manufacturing processes can handle demanding marine use, not just lab testing. - The release also signals that corrosion terminology matters in procurement, since older “C5-M” language appears in legacy specs while current ISO 12944 categories use C5 or CX. - The company is trying to align its engineering support with those updated standards, which can help buyers avoid mismatched specifications.

What's next: - Huafeng says it provides technical dossiers, coating test reports, and engineering evaluations for offshore wind transformer components. - The company also says it supports project-specific reviews of drawings, corrosivity ratings, service-life targets, flange drillings, torque requirements, and sealing compatibility. - The release directs interested buyers to more information.