【China Railway Engineering Machinery Research Institute】Rubber Expansion Joint Contract
Shanghai Songjiang Vibration Absorber Co.,Ltd. official website introduces: 【China Railway Engineering Machinery Research Institute】Rubber Expansion Joint Contract information. Songjiang Group provides various oil-resistant rubber expansion joint products for numerous engineering projects, mainly serving the purpose of shock absorption and noise reduction. Below is the detailed introduction of the Rubber Expansion Joint Contract with China Railway Engineering Machinery Research Institute.
1.The China Railway Engineering Machinery Research Institute (referred to as “CRRCME”):
Established by China Railway Construction Corporation Limited (CRCC) and restructured from three internal member enterprises, CRRCME is a new type of industrial group integrating scientific research, design, industrial manufacturing, engineering construction, and large-scale logistics. Located in Wuhan, a hub city connecting nine provinces, the company’s business mainly involves the research, development, manufacturing, construction, and testing of engineering machinery and steel structures for railways, highways, bridges, tunnels, subways, buildings, and ports.
With a registered capital of 3.66553 billion yuan, CRRCME has subsidiaries including CRRCME Engineering Machinery Design Institute, CRRCME Machinery Equipment Company, CRRCME Ninth Bridge Company, CRRCME Heavy Industry Company, Wuhan CRRCME Foundation Engineering Company, Jiujiang CRRCME Large-scale Logistics Company, and Jiujiang CRRCME Testing Technology Company. The total assets of the company exceed 1.5 billion yuan, with a workforce of 2,347 employees, including 624 technical professionals.
CRRCME, as a leader in the research and development of construction equipment for the China Railway, is a national high-tech enterprise and the technical center of Hubei Province. The company’s core technologies in equipment research and development cover various fields such as railways, highways, urban rail transit, tunnels, mines, marine engineering, and ports. It has developed over 60 patented technologies, formulated or revised 23 railway industry standards or national standards, and completed more than 300 scientific research projects. The company has won more than 120 national and provincial awards for scientific and technological achievements and has been recognized as a “National High-tech Enterprise” and “Hubei Provincial Enterprise Technology Center.”
CRRCME is engaged in the research and development, production, sales, construction, and after-sales service of construction machinery products. It has a strong technical development center and well-equipped manufacturing plants. The company continuously increases research and development investment, enhances research and development capabilities, and strives to maintain innovation vitality to promote sustainable development.
CRRCME has independently developed various large-scale and super-large-scale special construction equipment, such as the first domestically produced 50-meter tire belt machine, the 2000-ton double-track gantry crane with the largest lifting capacity in China, the 4000-ton steel box girder hydraulic balance module transport vehicle with the largest transport weight in China, and the 1300-ton marine bridge erecting machine. It has also developed various railway, highway, and urban rail transit laying machinery, as well as pile driving, tunneling, and port machinery. CRRCME is actively expanding into the international market, exporting equipment to countries like India and Turkey and cooperating with international companies for equipment manufacturing and procurement projects.
CRRCME continues to promote industrial development and the transformation of scientific and technological achievements into products and industries. It aims to become a leading service manufacturer of bridges and special equipment and expand its market presence in areas such as open-pit mining, marine engineering, rail transit, and intelligent information technology.
2.The contract introduction for the Rubber Expansion Joint of China Railway Engineering Machinery Research Institute (CRRCME):
The following is a scanned copy of the authentic contract. Please do not modify or reproduce. This contract is only for the purpose of providing proof of supply. Thank you for your cooperation.
3.Introduction to Rubber Joints from China Railway Engineering Machinery Research Institute (CRRCME):
Good elasticity, with excellent adaptability to compression, tension, torsion, and vertical displacement, preventing damage to pipeline systems caused by thermal expansion, contraction, or uneven settlement of the foundation.
The multi-layer spherical structure is suitable for withstanding internal pressure, with strong resistance to burst force and good impact resistance, maintaining its shape under external pressure.
Outer rubber layer: Nitrile rubber. Nitrile rubber, with the English code NBR, is resistant to oil, high temperatures, and aging. It has a tensile strength ≥13MPa, elongation at break ≥500%, permanent deformation ≤30%, brittle temperature resistance ≤-30°C, and adhesive strength ≥2.0DN/m. Since the outer rubber layer of the rubber joint is exposed to the air and susceptible to external factors, it requires characteristics such as oil resistance, heat resistance, and ozone resistance. To address these conditions, we use nitrile rubber. Through a reasonable formula, nitrile rubber is mainly suitable for hydraulic oil and other oil products, as well as several types of special oils that cannot be used (aviation kerosene, gasoline, diesel). The highest temperature resistance of nitrile rubber can reach 120°C, with a brittle temperature range of -15°C to 55°C.
4.【China Railway Engineering Machinery Research Institute】Rubber Joint Physical Photo:
The above contract information for “China Railway Engineering Machinery Research Institute” rubber joints is sourced from the official website of Shanghai Songjiang . For more information, please visit the Songjiang Group Metro Case Studies.
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