Product name: tandem sheaves tension string block

Description of tandem sheaves tension string block

Some transmission projects have unique problems in stringing and installing the conductor with regards to the structures and attachment hardware. There are also special designed conductors requiring special types and arrangements of blocks. The sheave may require a larger diameter, a special groove radius, and the proper lining for a special conductor. Special conductors require minimum bend radius or the flare of the sheave's groove profile.

Tandem arranged blocks can help eliminate the possible damage of special designed conductors on angles and dead-ends where the bend and breakover radius is a factor. Special attachment points on the block frame allow for suspension and support of the tandem block. Again, the sheave lining is important when installing special conductors.

We offers:

overhead stringing puller tensioner

Stringing pulley blocks

Come along clamps

3T 5T diesel gasoline powered winch

underground cable sender, cable pusher, cable feeder, cable puller and rollers

hydraulic drum jack , reel stand, reel elevator

Anti twist steel wire rope

Duct rod, duct rodder

Gin pole

About NINGBO ORIENTAL MACHINERY OF POWER CO.,LTD 

We supply various series of  equipments and tools for overhead and underground power line transmission installation totally over 2000 products since 1988. Till now we have established  business relationship with nearly 5000 power and telecom utilities in China as  well as 40 countries world-wide.

1988: Ningbo Oriental Machinery of Power Co., Ltd established

1998: Passed factory management: ISO 9001 International Quality Management System.

2000: Approved by Nation Grid as "Sole Manufacturer of Electric Power Construction Equipment"

2004: Invested 6.5 billion RMB to build a new industy zone covering 105,000 m2.

2006: Gained "Manufacture license of special equipment people's republic of China" by General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China"for producing puller ,tensioner and gin pole etc. 

2007: confirmed by "China Electricity Council", awarded the first "Key Manufactory of Power Construction Equipment" in China.

2007~2011: Awarded "China qualified famous brand", "Ningbo famous brand", " National Technology Innovation quality management advanced company", "Ningbo top 100 manufacture", "AAA credit enterprise" , " Nation High technology enterprise" 

2011:Still now, we have over 400 staff, including one expert enjoying special allowance from State Council, 15 senior engineers, 23 engineers, 34 assistant engineers and 19 senior technicians. 

Testing facilities

We invest large number of funds into developing new products and enhancing quality of products every year. After moved to the new industry zone, we have invested over 200 million yuan accumulatively, introducing lots of advanced production equipment and facilities. Now we have:

218 sets of various production equipment

a 40-meter high testing tower (load:40t) and 4000m2 of outdoor testing field which is suitable for the simulated test of 300KN hydraulic pullers, 4*45KN hydraulic tensioners, electrical crossing structures, emergency restoration towers and gin poles; 

1000KN horizontal tensile tester and 600KN multifunctional vertical tester which is fit for the tensile test of construction tools and machines of transmission lines up to 1000KV. 

35MPa hydraulic testing table ensures the reliable hydraulic system and the more smooth development of hydraulically driven equipment, like pullers and tensioners