Author: Site Editor Publish Time: 2026-05-22 Origin: Site
In May 2026, a three-member technical delegation from Sinopec Maoming Petrochemical Company, led by Procurement Manager Mr. Yuan, completed a two-day on-site supplier audit at Yangzhou Hengchun Electronics Co., Ltd. in Yangzhou, Jiangsu Province. The audit covered production capacity, quality management systems, electric actuator testing facilities, and nuclear-grade product manufacturing capabilities.
As one of China's largest refining and petrochemical complexes, Sinopec Maoming operates extensive valve automation systems across its refining, ethylene, and storage facilities. Electric actuators are critical components for pipeline isolation, flow regulation, and emergency shutdown (ESD) systems. To qualify new suppliers and evaluate existing ones, Sinopec Maoming conducts rigorous on-site audits covering manufacturing capability, quality control, and after-sales support.
Yangzhou Hengchun Electronics, with over 30 years of experience in industrial actuator manufacturing and an established track record in the petrochemical sector, was selected for this comprehensive evaluation.
The two-day audit was structured around four core assessment areas:
Accompanied by Hengchun's senior leadership, the delegation toured the company exhibition hall, where they reviewed the full product lineup including:
Part-turn electric actuators (CKDJII Series) — for ball valves and butterfly valves
Multi-turn electric actuators — for gate valves and globe valves
Electro-hydraulic actuators (CKQY Series) — for high-torque and fast-acting applications
Nuclear-grade special actuators — certified for nuclear power plant safety systems
The delegation reviewed technical specifications, torque ranges, and certification documents for each product line, with particular interest in explosion-proof (ATEX/IECEx) configurations suitable for petrochemical hazardous areas.
The audit team then visited Hengchun's manufacturing base, inspecting the complete production chain:
Raw material warehouse — incoming material inspection and traceability systems
Die-casting workshop — aluminum alloy housing production
Precision machining workshop — CNC machining of worm gears, shafts, and flanges
Electronics workshop — control board assembly, programming, and calibration
Final assembly workshop — actuator assembly, testing, and packaging
The team visited Hengchun's in-house testing laboratory, where the following quality verification procedures were demonstrated:
Torque output verification and calibration
IP68 waterproof and dust ingress testingIP68
High and low temperature chamber testing (-50°C to +150°C)
Explosion-proof enclosure pressure testing
Electrical safety and dielectric strength testing
Life cycle / endurance testing (30,000+ cycles)
In the closing review meeting, the delegation examined Hengchun's quality management documentation, including ISO 9001 certification records, production process control documents, material traceability records, and after-sales service protocols. The team verified compliance with standardized production procedures and operational management systems.
Key outcome: The Sinopec Maoming delegation expressed recognition of Hengchun Electronics' manufacturing capabilities, quality control systems, and product certification portfolio. Both parties agreed to advance technical discussions for potential actuator supply in upcoming Sinopec Maoming maintenance and expansion projects.
Following the audit, Yangzhou Hengchun Electronics will submit a detailed technical proposal covering actuator specifications for Sinopec Maoming's identified project requirements. The two companies plan to hold a follow-up technical exchange meeting within 30 days to discuss specific model selection, delivery timelines, and after-sales support arrangements.
"This audit reflects the trust that major petrochemical enterprises place in Hengchun's actuator technology," said a Hengchun spokesperson. "We will continue to invest in quality improvement and new product development to serve the evolving needs of the oil & gas and petrochemical industries."
About Yangzhou Hengchun Electronics
Founded in 1994 and headquartered in Yangzhou, Jiangsu Province, Yangzhou Hengchun Electronics Co., Ltd. is a professional manufacturer of industrial electric actuators and fluid control equipment. The company serves customers across petrochemical, power generation, water treatment, metallurgy, and municipal engineering sectors, with products exported to over 50 countries. Hengchun holds ISO 9001, CE, ATEX, and nuclear-grade certifications, and provides OEM/ODM services for global valve manufacturers and system integrators.
