The company was founded in 2002. As a pioneer in the field of environmental protection, the company has long adhered to the market-oriented principle. Through continuous investment and construction, it has strengthened its core capabilities such as market development, technology research and development, production and manufacturing, and quality assurance. It has a strong team combining professional technology and market sales, as well as its own R & D center, test center and core product system Build a base.

2002
year
Establishment of the company
863
items
Projects related to desulfurization and denitrification
14
items
Write and formulate industry and national standards
2
items
State Science and Technology Awards
8
items
Provincial and ministerial science and Technology Progress Award

PRODUCT CENTER

The company's main business includes: technical consultation, development and design of environmental protection engineering, R & D, manufacturing, installation and commissioning of environmental protection equipment, pressure pipeline components and expansion joints, construction and supervision of environmental protection engineering, consulting and design of electric power and chemical engineering, operation and investment of environmental protection projects.

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Metal expansion joint

Non-metallic expansion joint

Bracket

valve

Other structural parts

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What are the consequences of incorrect selection of expansion joints?

2020

07 -06

What are the consequences of incorrect selection of expansion joints?

In the expansion joint planning, selection is a very important aspect. This is because the selection of aggregates is more complicated, and there are many influencing factors on the material, such as the composition, flow rate, density, and temperature of the internal flowing medium. , It is related to the weather standardization of the external environment and corrosive atmosphere, and the external insulation is also related to the chloride ion content of the insulation material. For example, the same water vapor pipeline, some use 304 material, but some pictures of expansion joints use 316L material. In view of the fact that it depends on the content of chloride ions in the water vapor and the concentration of free oxygen, the expansion joints with external insulation should be selected Insulation materials that do not contain or contain less chloride ions, beware of pipelines operated in the open.

Two installation methods of expansion joints

2020

07 -06

Two installation methods of expansion joints

Expansion joints are first installed on the ground. They can be installed on the ground in a simple and clear way. That is to say, there are two solutions for fixing brackets on the ground and expansion joints on the mid-range device. One type is flange connection, and the other type is to take over a connection, so that unlimited types of expansion joints can be installed, such as internal pressure type, direct pull type, direct buried type, unconstrained type, etc. Expansion joints are the second kind of installation solution, namely, buried installation, which is enough for popular inspection to expand the installation of pipelines laid privately. There are also two ways to continuously connect with the pipeline, namely, the continuous flange and the continuous pipe, but the many days of taking over are attributed to the installation or buried installation of the expansion joint and the pipeline. There is an urgent need to install inspection wells, or you can't even think about using flanges, because after the uninspected well is installed on the inflation joint, it is impossible to expand the activity of finding refilling pipes, and the pace of pipeline damage is quickly increased. Expansion joints installed in the ground are commonly used even if they are directly buried. Their basic points are suitable for the axial alignment of directly buried pipelines, and they have bending resistance. Based on this, they agree with the influence of pipeline downward movement. The finished product has a large amount of filling and use. Long life and other characteristics.

What are the requirements for expansion joints during installation

2020

07 -06

What are the requirements for expansion joints during installation

What are the regulations to consider when installing expansion joints? After the expansion joint pipeline installation system is carried out, the gas generator and sealing can be removed from the expansion joint as auxiliary quasi-positioning support rods and standard parts for transportation and installation. The chemical fibers and cotton materials used in the expansion joints have better sound insulation, noise reduction, and shock absorption effects, which can weaken the noise and vibration of heating furnaces, centrifugal fans and other equipment. At the time of pipeline construction, there are often some small errors. Metal expansion joints can prevent small problems during installation. Determine the installation position according to the material inflow marked on the expansion joint; check the low point of the expansion joint where the water and oil plug is added to ensure that it is at the bottom of the expansion joint.

Where is the most appropriate location for expansion joints?

2020

07 -06

Where is the most appropriate location for expansion joints?

1. Long-term compressive performance, only in terms of design plan, the compressive performance of standard stamping elbows. However, because of the elements at all levels, the specific wall thickness of the floor heating pipe is generally 2mm. Under this thickness, all kinds of pipes can be considered for floor heating regulations, and the compressive advantages of standard stamped elbow pipes cannot be reflected; 2. Heat transfer: The pipes used for floor heating have good heat transfer. 3. Ultra-low temperature and high temperature resistance: PE-RT and PEX have better cold and impact resistance. During winter construction measures, the pipes are not easily damaged and cracked, which improves the coordination ability of project construction allocation. 4. Thermal insulation: PE-RT can be used comprehensively without environmental pollution. And PEX cannot be purchased, which will cause secondary pollution; 5. Reliability of production and processing performance: PEX has problems such as manipulation of chemical cross-linking degree and chemical cross-linking precision. The production and processing are complicated and the production and processing immediately harm the performance of the pipe.

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E-mail：njyuhang@vip.163.com

Add：208 Qingshuiting West Road, Jiangning District, Nanjing

2002

863

14

2

8

PRODUCT CENTER

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NEWS CENTER

What are the consequences of incorrect selection of expansion joints?

Two installation methods of expansion joints

What are the requirements for expansion joints during installation

Where is the most appropriate location for expansion joints?