Product Name: Valve Pipe and Valve Fitting_Rubber Pipe Expansion Joint DN40-DN600 Model NO.: Pipe Expansion Joint Connection Type: Flange Cross-Section Shape: Round Medium: Gas Diameter: 273mm Standard: GB, JIS Material: Stainless Steel MPa Classfication: Medium Pressure Piping Temperature Classification: High Temperature Piping Trademark: YDSR Transport Package: Wooden Box Specification: 1m*1m*1.2m Origin: China HS Code: 7307190000 Product Description Pipe expansion joints are necessary for systems that convey high-temperature substances such as steam or exhaust gases or to absorb movement and vibration. A typical joint is a bellow of metal (most commonly stainless steel), plastic (such as PTFE), fabric (such as glass fiber) or an elastomer such as rubber. A bellows is made up of a series of convolutions, with the shape of the convolution designed to withstand the internal pressures of the pipe, but flexible enough to accept axial, lateral, and angular deflections. Expansion joints are also designed for other criteria, such as noise absorption, anti-vibration, earthquake movement, and building settlement. metal expansion joints have to be designed according to rules laid out by EJMA, for fabric expansion joints there are guidelines and a state-of-the-art description by the Quality Association for Fabric Expansion Joints. Pipe expansion joints are also known as "compensators", as they compensate for the thermal movement.Pressure balanced expansion joints are often included in industrial piping systems to accommodate movement due to thermal and mechanical changes in the system. When the process requires large changes in temperature, metal components change size. Expansion joints with metal bellows are designed to accommodate certain movements while minimizing the transfer of forces to sensitive components in the system.Pressure created by pumps or gravity is used to move fluids through the piping system. Fluids under pressure occupy the volume of their container. The unique concept of pressure balanced expansion joints is they are designed to maintain a constant volume by having balancing bellows compensate for volume changes in the bellows (line bellows) which is moved by the pipe. An early name for these devices was "pressure-volumetric compensator"Company ProfileYing desi Rui Machinery Manufacturing Co., Ltd. (YDSR) is a modern comprehensive manufacturing enterprise that has grown up in industrial manufacturing and mainly produces valve, machining, and metal casting. Registered address: No. 193 Shenliao West Road, Shenyang Economic and Technological Development Zone (China Heavy Industry base Sino-German (Shenyang) High-end Equipment Manufacturing Industrial Park). The registered capital is 5 million. Official website is www.syydsr.com.As China joins the "WTO" and "Belt and Road" 21st Century Maritime Silk Road cooperation initiatives. China is growing import and export trade, in order to further meet the needs of traders' importers and exporters. "China (Shenyang) Free Trade Pilot Zone" established a wholly-owned subsidiary (Ying desi Rui import and Export Co., Ltd.), which laid the foundation for better serving the international market.The company's main products: valves (butterfly valves, gate valves, ball valves, globe valves, diaphragm valves, check valves, fire valves, etc.), valve accessories (compensation joints, actuators, flanges, pipe fittings, filters, etc.), valve components ( Valve plate, valve ball, valve body, valve shaft, valve seat, hand wheel, etc.)Service items: CNC machining, casting, forging, stamping, and other series of product production, manufacturing, and provide customized professional services. (Materials include: iron, copper, aluminum, steel, alloy, etc.)Service industry: water supply engineering, electric power engineering, sewage treatment, petrochemical industry, municipal engineering, building construction, food machinery, pharmaceutical industry, agricultural machinery, metallurgy industry, gas industry, shipbuilding, automobile.