Henan Liwei Industry Co., Ltd:
1. Since 1988, Top 3 manufacturer of stainless steel expansion joint in China;
2. The Main Drafting Committee of National Standard for Expansion Joint;
3. Qualified Supplier for Nuclear Power Plant;
4. ISO9001: 2008 and ISO14001: 2004 Certified.
Stainless Steel Expansion Joint is the compensating element for thermal expansion and relative movement in pipelines, containers and machines. They consist of one or more metal bellows, connectors at both ends, and tie rods that depend on the application. They are differentiated according to the three basic types of movement: Axial, angular and lateral expansion joints.
Stainless Steel Expansion Joint is elastic vessel that can be compressed when pressure is applied to the outside of the vessel, or extended under vacuum. When the pressure or vacuum is released, the bellows will return to its original shape (provided the material has not been stressed past its yield strength).
Features:
Economical end usage
Providing for lower initial costs in piping & construction work
Applications:
Diesel engine sets
Pipelines
Turbines
Compressors
Blowers
Vacuum pumps
Heat exchangers
Advantages:
Reduce vibration
Dampen sound transmission
Compensate lateral, torsional & angular movements
Compensate axial movements
Minimal face-to-face dimensions
Lightweight
Low movement forces required
Reduced fatigue factor
Reduced heat loss
Corrosion, erosion resistant
No gaskets
Liwei Stainless Steel Expansion Joint:
Why us:
Henan Liwei Industry Co., Ltd. Is a leading manufacturer of stainless steel expansion joint in China. We have:
(1) Strong R&D strength;
(2) Strict Quality Control System;
(3) Perfect Test System;
(4) Professional After-sale Service Team;
(5) OEM Service.
We are your qualified supplier and reliable friends!
Thanks for your attention. For more information, please feel free to contact us.
| 3. Material List : |
| No. | Name | Material |
| 1) | Inner rubber lining | IIR,CR,EPDM,NR,NBR |
| 2) | Outer rubber lining | IIR,CR,EPDM,NR,NBR |
| 3) | Casing ply | Polyester cord fabric |
| 4) | Flange | Q235A,stainless steel |
| 5) | Strengthening ring | Q235A |
| 6) | Stopper | Q235A,stainless steel |
| 7) | Limit bar | Q235A,35#,stainless steel |
| 8) | Nut | Q235A,35#,stainless steel |
|
| 4. Physical and Mechanical Properties of Rubber Expansion Joint : |
| No. | Item | index | Measured value |
| Inner/outer rubber lining |
| 1) | Tensile strength (Mpa) | ≥12 | 13.5 |
| 2) | Tensile yield (%) | ≥450 | 560 |
| 3) | Tension set at break (%) | ≤25 | 20 |
| 4) | Hardness (Shore A hardness) | 60±5 | 60 |
| 5) | Brittleness temperature (°C) | ≤-30 | -40 |
| 6) | Cohesive strength (between cord fabric) (KN/m) | ≥2.0 | 4.8 |
| 7) | 100°Cx48h
Hot air aging | Rate of Tensile Strength Reduction | ≤25 | 15 |
| Rate of Ultimate Elongation Reduction | ≤30 | 20 |
| 8) | Mass change (10%H2SO4*Room temperature) % | ≤3 | 2 |
| 9) | Mass change (10%H2SO4*Room temperature) % | ≤3 | 2 |
|
| 5. Technical Parameters for Double Sphere Flexible Rubber Joint : |
DN
Diameter | FF Length (mm) | Axis displacement | Radial displacement | Deflexion
displacement |
| Type-I | Type-II | Type-I | Type-II | Type-I | Type-II |
| mm | inch | Extension | Compression | Extension | Compression |
| 32 | 1¼″ | 90 | 6 | 10 |
|
| 9 |
| ±7.5° |
|
| 40 | 1½″ | 95 | 7 | 10 |
|
| 9 |
| ±7.5° |
|
| 50 | 2″ | 105 | 7 | 10 |
|
| 10 |
| ±7.5° |
|
| 65 | 2½″ | 115 | 7 | 13 |
|
| 11 |
| ±7.5° |
|
| 80 | 3″ | 135 | 8 | 15 |
|
| 12 |
| ±7.5° |
|
| 100 | 4″ | 150 | 10 | 19 |
|
| 13 |
| ±7.5° |
|
| 125 | 5″ | 165 | 12 | 19 |
|
| 13 |
| ±7.5° |
|
| 150 | 6″ | 180 | 12 | 20 |
|
| 14 |
| ±7.5° |
|
| 200 | 8″ | 210 | 16 | 25 | 30 | 35 | 22 | 25 | ±7.5° | ±10° |
| 250 | 10″ | 230 | 16 | 25 | 30 | 40 | 22 | 25 | ±7.5° | ±12° |
| 300 | 12″ | 245 | 16 | 25 | 30 | 40 | 22 | 25 | ±7.5° | ±12° |
| 350 | 14″ | 255 | 16 | 25 | 35 | 45 | 22 | 30 | ±7.5° | ±12° |
| 400 | 16″ | 255 | 16 | 25 | 35 | 45 | 22 | 30 | ±7.5° | ±12° |
| 450 | 18″ | 255 | 16 | 25 | 36 | 47 | 22 | 30 | ±7.5° | ±12° |
| 500 | 20″ | 255 | 16 | 25 | 36 | 48 | 22 | 30 | ±7.5° | ±12° |
| 600 | 24″ | 260 | 16 | 25 | 40 | 50 | 22 | 33 | ±7.5° | ±12° |
| 700 | 28″ | 260 | 16 | 25 | 40 | 55 | 22 | 33 | ±7.5° | ±12° |
| 750 | 30″ | 260 |
|
| 40 | 55 |
| 33 |
| ±12° |
| 800 | 32″ | 260 | 16 | 25 | 45 | 55 | 22 |
| ±7.5° | ±12° |
| 900 | 36″ | 260 | 16 | 25 | 45 | 55 | 22 | 35 | ±7.5° | ±12° |
| 1000 | 40″ | 260 | 16 | 25 | 45 | 60 | 22 | 35 | ±7.5° | ±12° |
| 1100 | 44″ | 300 |
|
| 45 | 60 |
| 35 | ±7.5° | ±12° |
| 1200 | 48″ | 300 | 16 | 25 | 50 | 60 | 24 | 38 | ±7.5° | ±10° |
| 1300 | 52″ | 300 |
|
| 50 | 60 |
| 38 |
| ±10° |
| 1400 | 56″ | 350 |
|
| 50 | 70 |
| 40 |
| ±10° |
| 1500 | 60″ | 350 |
|
| 60 | 70 |
| 40 |
| ±10° |
| 1600 | 64″ | 350 | 18 | 25 | 60 | 70 | 24 | 46 | ±7.5° | ±10° |
| 1800 | 72″ | 400 | 18 | 25 | 60 | 75 | 24 | 48 | ±7.5° | ±10° |
| 2000 | 80″ | 450 |
|
| 70 | 75 |
| 50 |
| ±10° |
| 2200 | 80″ | 400 |
|
| 70 | 75 |
| 50 |
| ±10° |
| 2200 | 88″ | 500 |
|
| 70 | 80 |
| 60 |
| ±10° |
| 2400 | 96″ | 500 |
|
| 80 | 80 |
| 60 |
| ±10° |
| 2600 | 104″ | 500 |
|
| 85 | 80 |
| 60 |
| ±10° |
| 2800 | 112″ | 550 |
|
| 85 | 80 |
| 60 |
| ±10° |
| 3000 | 120″ | 550 |
|
| 85 | 80 |
| 60 |
| ±10° |
Henan Liwei Industry Co. Ltd, established in 1983, is a leading manufacturer specializing in processing various steam, water, wind pipe expansion joints and compensation joints, and a main base for producing crushers and superfine grinding mills.
Liwei is the appointed enterprise by the former chemical industry ministry, national construction ministry and general petrol chemical company, member unit of China Water Supply Association and Power Equipment Network Union, and joints production unit recommended by China Water Association and National Metallurgy Ministry.
Based on the scientific management mode of modern enterprises, the company owns advanced process, strong technical strength, leading production equipment and complete testing instruments and apparatus, and it has 5 senior engineers, 16 engineers, 30 senior technicians and about 300 employees. With a set of effective service system, the company has formed a service team characterized of honesty and credit, planned site for clients free of charge as well as design and installation of foundation drawings and flow drawings. It can provide professional technical training, dispatch technicians for installation and commissioning in suit.
VTM Series Grinding Mill is the new product of Liwei in 2005, which have been granted certificates of national invention patent and utility model patent (Patent No.: ZL200510017387.2). The superfine vertical roller-based mill was developed and produced by Lu Fucai, a famous mill expert at home, professor Xu Changbai from Zhengzhou University and our company, and it is popular among users after it is put into practice. The mill is an original product with power on the grinding head which borrows advanced technologies at home and abroad. It has characteristics of low vibration, low noise, low energy consumption and high output, etc.
Liwei company has been equipped with rich technical strength, excellent design and complete products test measures. We also own a set of strict management system and high-quality technicians. In 2004, we have gained ISO9001 and ISO14001 certificate.
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.
