Hand-Crafted Expansion Joint

Elastomer piping expansion joint is hand-crafted and designed to absorb motion and displacement between pipe flanges. These handcrafted, one-piece elastomeric expansion joints feature an exclusive H-R double protected construction. Used and proven in tough services since 1979, Kosga hand-crafted expansion joint incorporate the finest materials in combination with painstaking fabrication techniques.

Hand-Crafted Expansion Joint is our most rugged expansion joint. They are all hand built by our skilled craftsmen. The 1/4” minimum thickness solid elastomer tube is continuous with the flange face. Multiple plies of rubber impregnated high strength polyester or nylon tire cord form the first pressure reinforcement over the tube. Arch swell in response to pressure and arch migration are virtually eliminated by criss-crossed layers of reinforcement that pass over the arch and around steel or ductile iron rings embedded on both sides at the base of the arch. Body swell is controlled by high strength fabric or spiral steel wire. Large diameter joints are often built with steel rings in place of the wire when in addition to internal pressure, external pressure resistance is important. External pressure may come from deep burial, shallow embankment under roadways or joints inside tanks.

Main Advantages:
1.Absorbs motion and displacement between pipe flanges perfect for high shock and vibration situations
2.Increased efficiency of piping systems by managing high range of temperatures and pressures
3.Prevents pipe buckling or fracture
4.Features steel body rings held in place with exclusive ring enveloper system
5.Manages a high range of temperatures and pressures
6.Available for all general applications including severe and harsh environments
7.Engineered and built to specific customer requirements
8.Can be designed for full vacuum service
9.Available sizes: 1/2 to 108

Founded in 1979 and rising rapidly, it has professional level and mature technology in the field of wear-resistant rubber. It is our constant pursuit to rely on science and technology for development and continuously provide customers with satisfactory wear-resistant rubber lining products for mills. On the basis of introducing the international advanced technology for designing and manufacturing wear-resistant rubber for mills, KOSGA Has developed various kinds of AG, SAG and ball mill rubber linings which are suitable for all mill brands in the current market and have been certified by ISO 9001 Quality Management System, and have been widely used in many fields such as mining, metallurgy, chemical industry, power plant, cement etc. With first-class product quality and exquisite technical service, it has received unanimous praise from Customer.

In the process of development, company has continuously exchanged and cooperated with many domestic departments and institutions. Its design, production, maintenance, commissioning and engineering renovation capabilities have been rapidly improved and its scale has been expanding. Professional R&D institutions and technical teams make us the world’s first-class mill rubber lining company. Thanks to our high-quality products and excellent customer service, we have gained a global sales network and exported our products to North America, Europe, Africa, South America and other countries.

Quality is an essential in manufacturing. No matter how varied the requirements, it is imperative to manufacture products that meet customer’s needs and are of the highest quality. For over 40 years KOSGA has manufactured a diverse array of Wear resistant rubber mechanical parts. This experience shows the history of our constant challenge to ensure quality.

The manufacturing industry has undergone major transformation in the 21st Century. We provide quality by grasping the true nature of this change and responding to various market demands with sincerity and relentless effort. KOSGA remains dedicated to high quality in order to build a prosperous society and future.