The whole insulation joint is in good condition under soil pressure, specified pipeline oper


Product Details

Quick Details Parameter

Material: Stainless Steel : Technics: Forged
Type: Coupling : Model Number: QDQ-JD



The insulation ring of rigid insulation joint is made of high

compression strength (not less than350N/mm2), low water absorption,high electrical insulating strength,

anti-aging materials. Insulation resistance

value is more than 10 m Ω. Because of it is

far greater than other insulation joint

resistance, greatly improving the insulation

and to reduce the leakage current. Another

sleeve (assembly) is annular space. It is

inject polymer composite material, low viscosity, cold solid heat hard

resin, and has certain compression strength, more can give full play to the

cathode protection, improve the protected the pipeline operation life.

2)Steel degree strong

Rigid insulation joint formed a rigid cylinder that far greater than

pipeline bending section coefficient. Cause it can bear larger bending

moment (According to the same strength to pipeline design), eliminate

the other insulation joint for structure is not rational caused by

insufficient stiffness caused by leakage accident.

3)Long lifespan:

The unitary insulation joint (directly buried and without maintenance)
is use of O&U type self-tightening seal, to sealed the laminated section of
insulating ring. It’s completely avoid the moisture of water pressure test
and soil infiltration insulation joint internal. Especially we adopt the king
of rubber (fluorine rubber) seal, It makes anti-aging degree strengthening,
also use life and pipeline life equate.
4)Applicable medium wide application
Rigid insulation joint adapt to the oil, gas and other non conducting
medium pipeline transport, also in the steam, pulp, such as water
dielectric to realize the cathodic protection. It need to users with medium

Company Profile

Shenyang Wensheng Instrument Equipment Co., Ltd. is a joint-stock company with the combination of production and research. Our products mainly include pipeline-cleaning instruments, supporting instruments and non-standard pipeline instruments in petrochemical, petroleum and other industries. In 2003 we passed ISO9001:2000 quality system certification, and successively obtained Admission Certificate of the Material Market in all main domestic oil and gas fields.

Our company, with an area of 7,000sqm, owns complete production equipment and perfect detection means. Besides, the main technology indicator and performance of products have reached domestic advanced level. Among those, LSM type of wheel-paddle translational sealing quick opening closures, pigs with supporting-wheel, and diameter-changing pigs have been granted national patents. They are widely applied in oil fields, petrochemical industry, and other industries like city gas and water supply.

Our enterprise spirit is: to satisfy our clients with advanced and reliable technology as well as prompt and considerate service. We regard product quality and after-sale service as the life of an enterprise, so we establish a quality control and service management system. We require every employee to be a qualified production technician as well as a good after-sales service staff. All products are provided to realize a successful production. In the pipeline industry we enjoy an excellent reputation.

Our products are widely recognized and trusted by users and can meet continuously developing economic and social needs.

We welcome new and old customers from all walks of life to contact us for future business relationships and achieving mutual success!
Shenyang Wensheng Instrument Equipment Co., Ltd.


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