Ningbo Marshine Power Technology Co., Ltd.
Ningbo Marshine Power Technology Co., Ltd.
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What Is MARSHINE Stringing Block?

What Is Stringing Block


MARSHINE Stringing Blocks are mechanical devices designed for overhead power line construction to guide and support conductors, OPGW (Optical Ground Wire) or fiber optic cables during the stringing process. These blocks prevent the conductors from contacting the ground or other objects, ensuring smooth and safe installation of the transmission line.


MARSHINE Stringing Blocks are available in a variety of sizes and configurations – single, double and multi-pulley – to suit different types of conductors and transmission structures, including towers, poles and gantries.


How to Use


Proper use of MARSHINE Stringing Blocks ensures safe and efficient line installation:


Installation: Secure the stringing block to the crossarm, tower or pole using a suitable mounting bracket or attachment point.


Threading: Thread the lead rope through the groove of the stringing block manually or using a small winch system.


Pulling: Secure the wire to the stringing block using a swivel or pull-out clamp, then thread the wire through the block using a tensioner or capstan.


Monitor: Continuously observe the movement of the wire to avoid tangling, excessive vibration or dragging.


Finish: When the wire is paid out, lift the wire and secure it on the insulator, then remove the stringing block.


Maintenance Guide


To ensure the long-term performance and safety of the MARSHINE stringing block, it is essential to regularly maintain the MARSHINE stringing block:


Clean the block: Regularly remove dust, dirt and grease from the pulley surface to maintain smooth rotation.


Check the bearings: Check the bearings for wear or looseness, and lubricate them regularly to avoid friction.


Check the frame: Check the frame and mounting bracket for cracks, rust or deformation.


Tighten the bolts: Make sure all bolts, screws and locking devices are securely tightened before and after use.


Storage: When not in use, store in a dry and clean place to prevent corrosion or material aging.

Advantages of MARSHINE Stringing Block


The MARSHINE Stringing Block has a series of advantages that make it stand out in the industry:


High load capacity: Designed to withstand the weight and tension of large conductors without deformation.


Low-friction operation: Precision-machined grooves and premium bearings reduce friction and minimize conductor wear.


Material options: Aluminum alloy and nylon blocks are available to meet different project needs.


Versatility: Compatible with single, dual or bundled conductor systems, including OPGW fiber optic cables.


Durable and reliable: Designed to withstand harsh field environments and continuous operation over long installations.



Choose MARSHINE for reliable, high-quality stringing solutions that meet the demands of modern power projects.


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