Rubber joint compressive strength and fatigue limit national standard performance parameters, compressive strength and fatigue limit raw material manufacturing stability is composed of many stages such as design program, raw material acquisition manufacturing and installation. Raw material selection for the selection of materials used to compensate for long-distance pipelines should take into account the probability of intergranular corrosion, interference of water treatment agents and pipeline cleaners with the material, in addition to the working material, operating temperature and environmental factors.
On this basis integration of double flange rubber joint raw materials welding welding, forming and its material function price comparison, selection of cost-effective production of raw materials. Pipeline operation pipeline can reasonably compensate and reduce the driving force of pipeline and blind, also facilitate the installation, maintenance and replacement of centrifugal pump and gate valve. In fact, the more satisfactory supporting facilities and commodities in the field of pipeline installation and transportation.
Butadiene rubber (NBR) Copolymer of butadiene and acrylic. Characterized by particularly good resistance to gasoline and aliphatic hydrocarbon oils, second only to polysulfide rubber, acrylate and fluorine rubber, and better than other general-purpose rubber. It has good heat resistance, air tightness, abrasion resistance and water resistance, etc., and strong adhesion. The disadvantages are poor cold resistance and ozone resistance, low strength and elasticity, poor acid resistance, poor electrical insulation, and poor resistance to polar solvents. It is mainly used in the manufacture of various oil-resistant products, such as hoses and sealing products.
