Ningbo Changshi Electric Power Machinery Manufacturing Limited is a prominent Chinese manufacturer and exporter specializing in tools and equipment for power lines, substations, electrical construction, and maintenance. The company offers comprehensive one-stop supply and services for both overhead transmission line (OHTL) wire cable conductor tension stringing equipment and underground cable laying equipment.

Location and Facilities:
Changshi is located in the Ningbo Fenghua Industrial Zone, covering 100,000 square meters with a total building area of 48,000 square meters. It employs over 300 staff, including experts with special allowances from the State Council and many senior engineers and technicians. The company possesses 320 production equipment pieces and advanced testing facilities, such as a 40-meter high, 40-ton testing tower and a 4,000 square meter outdoor testing field suitable for simulated tests of stringing equipment and power fittings. Other testing equipment includes a 1000 kN horizontal tensile tester and a 600 kN multifunctional vertical tester, capable of testing tools and machines for transmission lines up to 1000 kV.

Product Range:
Changshi manufactures a wide array of equipment for overhead and underground power line projects:

Overhead Transmission Line Stringing Equipment:
Includes hydraulic pullers, tensioners, and puller-tensioners designed for stringing power lines with capacities ranging from 10 kN to 360 kN. Their equipment supports one to six conductors per phase and allows simultaneous or independent control of conductors or ropes. The product line also includes reel stands, trailers, reels, ropes (steel pilot, nylon, polypropylene, Dyneema/polyester), pulley blocks, lifting tackles, clamps, hydraulic presses, earthing devices, chain lever hoists, inspection bicycles, gin poles, suspension platforms and ladders, electronic dynamometers, sag-scopes, and more.

Overhead Stringing Tools and Accessories:
Products such as ACSR conductor jointing compressors, cable winch machines, aerial rollers (single, double, rubberized), hydraulic crimping machines and cutters, conductor clamps, cable rollers, grounding pulley blocks, stringing tools, cable drum lifting jacks, come-along clamps, running blocks, OPGW wire mesh socks, spacer trolleys for various conductor types, drum elevators, reel winders, and conductor cars.

Underground Cable Laying Equipment:
Changshi offers hydraulic cable pullers with pulling capacities from 8 kN to 600 kN, designed for laying low, medium, and high voltage underground cables, fiber optic cables, and pipe renewals. Their underground cable equipment includes recovering cable hydraulic pullers, cable pushers, hydraulic cable winches, cable reel stands, winding cable drums, reel trailers, hydraulic power units, cable rollers, fixed joints, stocking grips, underground machines, drum elevators, trailers, and related tools and accessories.

Applications:
Their products are widely used for power line construction, tower erection, helicopter stringing, power line refurbishment, large crossings, OPGW installation, and cable laying projects.

Commitment:
Changshi is dedicated to providing integrated solutions for both overhead and underground line tension stringing, aiming to develop and share success with their clients.

Our detailed profile highlights Changshi’s comprehensive capabilities in manufacturing and supplying specialized equipment for power transmission and distribution projects in China and internationally.