WE ARE THE MEMBER OF CNEA(CHINA NUCLEAR ENERGY ASSOCIATION)
1. expansion coupling introduction:
1. Expansion coupling can greatly reduce pipeline system shock and noise. And can
fundamentally resolve pipe joints displacement, axial stretch and non-concentricity.
2. By using different materials, it can be made many kinds to cater for different
medium and environment. Such as acid resistance, alkali resistance, corrosion
resistance, oil resistance and heat resistance etc.
3. The material is pure rubber, sealing is very good. It is in light weight, very easy
for installation . This product has long life performance, but must be not contact
with sharp metal instruments to avoid piercing the sphere.
4. Expansion coupling can be used for lift and transportation of raw water and sewage,
transportation of water supply cooling cycle water thermal power ,condensate
water of metallurgy industry and chemical industry.
2.structure diagram: 3. expansion coupling displacement diagram:
4.material list:
|
NO |
NAME |
MATERIAL |
|
1 |
Inner rubber |
ⅡR,CR,EPDM,NR,NBR |
|
2 |
Outer rubber |
ⅡR,CR,EPDM,NR,NBR |
|
3 |
Framework layer |
Polyester cord fabric |
|
4 |
Flange |
Q235 |
|
5 |
Reinforcing ring |
Steel wire rope |
5.expansion coupling diameter,length and displacement form:
6.rubber expansion coupling production progress:
1. Raw material: we never use reclaimed raw rubber, rubber is imported from USA. Before used, raw material should be tested, including physical test and some chemical experiment to test the hardness and so on;
2. Rubber pretreating and ingredients;
3. Milling: first, rubber plastication, second, rubber mixing, we will add rubber compounds, like sulfurzing reagent, surfactant, softener, stabilizer, foaming agent and some special compounds, at the same time, rubber will be extruded into plates, cut, produce 45 degree angle. The plates cannot directly be used , they should be cooled about 24 hours;
8.customers visit
Company Information
Zhengzhou Liwei Pipeline Equipment Co., ltd. (the former Zhengzhou Liwei Rubber Products Co., Ltd.) located at Shangjie District. Zhengzhou city is a manufacturer specializing in processing various steam, water, windpipe expansion and compensation joints, and a main base for producing rubber, metal and non-metallic pipe joints, It is also the appointed enterprise by the former chemical industry ministry, national construction ministry and general petrol chemical company member unit China Water Supply Association and power Equipment Network Union, and joints production unit recommended by China Water Association and National Metallurgy Ministry.
Our Liwei brand flexible rubber joints have various heavy calibers, type and high quality in the county, The products series have won four patents and our company is named " Quality and Credit Unit" by Henan Province, Our product have become the first choices for national power design ,municipality and metallurgy units.
At present, our product include four serial flexible rubber joints, three types, tens of standard and common specification, eight series of metal pipe loosing compensation joints and fourteen standard specifications and types, eleven types of standard and common specification products for serial wind pipe non-metal compensators. Our annual comprehensive production capacity can reach over forty thousand sets and we also process various pipe joint matching flat welding flanges (steel international/non-international standard). Our products have been sold in over thirty cities and autonomous regions, With China's entry to the WTO; our products have been exported to foreign countries as Italy. Spain, Pakistan. Singapore and East European countries, etc, and the products have been become public famous brand products for design units and clients.
Our company has been equipped with rich technical strength, excellent design and complete design and complete products test measures. We also own a set of strict management system and high-quality technicians, In2004; we have gained quality management and environment management authentication.
Insisting on the rennet " Development Through Technology, Making More Friends, Creating Green Environment and Responsible for Future" , the company has been devoting itself to creating top products and well serving all clients around the world, Liwei brand products will be a red line between we and the clients for ever.