As a globally leading supplier of composite insulator components, we operate a complete in-house insulator fitting production line. We supply various types of fittings complying with mainstream international standards including GB/T 21421.1-2021, IEC 61466-1:2016 and ANSI C29.12-2020. Meanwhile, we possess strong customized development capability to deliver precise design and mass production according to your special engineering requirements.

Insulator Fittings | Professional Manufacturer of Composite Insulator Components

Core Competitive Advantages

Our factories in Wenzhou and Lishui are equipped with advanced forging workshops and precision machining workshops. We independently forge all kinds of fitting blanks. Full-process production management covering raw material inspection to precision machining ensures outstanding mechanical strength and high dimensional accuracy of finished products.

Click the links below to visit our production sites via 360° digital panoramic workshop and witness our manufacturing capacity.

Production Process of Insulator Fittings

• High-Strength Material: Manufactured from premium forged steel or ductile cast iron. The forging process achieves dense internal metal structure free of pores and sand holes, capable of enduring heavy tensile loads ranging from 40kN to 550kN for long-term operation.

• Superior Anti-Corrosion Performance: All products undergo strict hot-dip galvanizing treatment. The galvanized coating is uniform and meets standard requirements (average thickness over 86μm), delivering outstanding corrosion resistance in salt spray, humid and industrially polluted harsh environments, with a designed service life of over 30 years.

• Precision Matching Dimensions: Interface design of ball, socket, clevis and tongue fittings strictly complies with GB/T 21421.1-2021, IEC 61466-1:2016 and ANSI C29.12-2020. Nominal connection markings including 11, 16, 20, 24 feature high dimensional precision to ensure seamless interchangeability and flexible connection with various insulators and hardware strings.

• Electrical Reliability: Rounded structural edges effectively suppress partial corona discharge and guarantee electromagnetic compatibility for power lines under high voltage operation.

Main Application Fields

Widely used on 10kV to 1000kV AC and DC transmission & distribution lines, serving as critical end fittings for composite suspension insulators, tension insulators and station post insulators.