Helicopters are widely in construction of overhead transmission Lines now. Most of western countries have used helicopters for assembly of steel towers, transmission line stringing, and transmission line inspection and maintenance.

As the leading manufacture of power line stringing equipment and tools in China, Ningbo Dongfang started design and manufacture helicopter stringing tools from 1998. Cooperated with National Power Company and institute, we carried first helicopter stringing operation (test) in the west of China in 2001. We designed and manufactured single sheave, three sheaves and five sheaves helicopter stringing blocks with different structures. Our helicopter stringing blocks have been exported to more than 10 countries in the world.

1. Single Sheave Helicopter (Conductor) Stringing Blocks with fly attachment

Single Sheave Helicopter Stringing Blocks are used for overhead line single conductor or OPGW stringing operation with pilot fly arms. All the helicopter blocks are incorporated with a helicopter arm and specially designed pilot rope slide in system. Normally it is spring controlled or wheel controlled mechanical system. The helicopter blocks can be used for modern helicopter installation of conductor or Optic fiber cables.

Single sheave Helicopter Stringing Block

Application: It is suitable to string stranded aluminum and ACSR conductors on tangent structures. Compression sleeves, swivel connectors, and pulling rope connectors can pass through the groove. The sheave is made in aluminum alloy or high strength nylon. The big size 508mm, 660mm aluminum alloy sheave can be lined with neoprene. The big size 660mm, 822mm, 916mm, 1040mm nylon sheave can be lined with neoprene.

2. Three Sheaves Helicopter (Conductor) Stringing Pulleys

Three sheaves Helicopter Stringing Blocks

Application: It is suitable to string two or three stranded aluminum and ACSR conductors on tangent structures. Compression sleeves, swivel connectors, and pulling rope connectors can pass through the groove. The sheave is made in aluminum alloy or high strength nylon. The big size 508mm, 660mm aluminum alloy sheave can be lined with neoprene. The big size 660mm, 822mm, 916mm, 1040mm nylon sheave can be lined with neoprene.

3. Five Sheaves Helicopter (Conductor) Stringing Pulleys for 500KV transmission lines

Five sheaves Helicopter Stringing Blocks

Application: It is suitable to string FOUR or FIVE stranded aluminum and ACSR conductors on tangent structures. Compression sleeves, swivel connectors, and pulling rope connectors can pass through the groove. The sheave is made in aluminum alloy or high strength nylon. The big size 508mm, 660mm aluminum alloy sheave can be lined with neoprene. The big size 660mm, 822mm, 916mm, 1040mm nylon sheave can be lined with neoprene.

The central sheave is specially strengthened for passage of pilot wire rope.

Shipment

1. The blocks will be shipped in container

2. We will ship the products within one month normally after receiving the payment.

3. Stock is available for standard product.

Package

1. The blocks will be loaded in container.

2. It also can be packed in plywood case or steel frame case.

Payment

1. We accept T/T and L/C.

2. Please send swift copy of T/T if you arrange payment by T/T

3. Please send us the L/C draft to us before issue L/C.

Why choose us:

1. High quality and competitive price

2. Leading and biggest manufacture for stringing equipment and tools in China.

3. We have 25 years of production experience, and more than 1000 customers in the country and abroad market. The stringing blocks have been sold to more than 40 countries.

4. Customer specially ordered products are available, such as helicopter stringing blocks.

4. Big stock condition for fast shipment.

5. Detailed pre-sales service and fast active after-sales service. Response within 12 hours after-sales service