行业动态 Industry News
法兰在一定的领域方面中能够产生重要的性能和优势，充分在具体的使用中展现重要的特点和贡献，管道配件法兰按与管子的连接方式可分为五种基本类型：平焊法兰、对焊法兰、螺纹法兰、承插焊法兰、松套法兰。法兰的密封面型式有很多种，一般常用有凸面(RF)、凹面(FM)、凹凸面(MFM)、榫槽面(TG)、全平面(FF)、环连接面(RJ)。
平焊钢法兰：适用于公称压力不超过2.5MPa的碳钢管道连接。对焊钢法兰：用于法兰与管子的对口焊接，其结构合理，强度与刚度较大，经得起高温高压及反复弯曲和温度波动，密封性可靠，公称压力为0.252.5 MPa的对焊法兰采用凹凸式密封面。
承插焊法兰：常用与PN?10.0MPa，DN?40的管道中。
松套法兰：松套法兰俗称活套法兰，分焊环活套法兰，翻边活套法兰和对焊活套法兰。常用于介质温度和压力都不高而介质腐蚀性较强的情况。当介质腐蚀性较强时，法兰接触介质部分(翻边短节)为耐腐蚀的高等级材料如不钢等材料，而外部则利用低等级材料如碳钢材料的法兰环夹紧它以实现密封。
整体法兰：常常是将法兰与设备、管子、管件、阀门等做成一体，这种型式在设备和阀门上常用。
平焊法兰的密封面可以制成光滑式，凹凸式和榫槽式三种。光滑式平焊法兰的应用量很大，多用于介质条件比较缓和的情况下，如低压非凈化压缩空气、低压循环水，它的优点是价格比较便宜哦。
In certain areas of the flange can produce significant properties and advantages, fully in specific use in important characteristics and contribution, pipe fittings flange connection with the pipe by can be divided into five types: flat welding flanges and flanged, threaded flange, butt welding flanges, loose the socket of flange. The flange sealing type has a lot of kinds, general and commonly used have raised (RF), convex (concave and convex surface (FM), MFM), tenon groove surface (TG), the plane (FF), LianJieMian ring RJ (.).
Flat steel flange: applicable to weld nominal pressure shall not exceed the steel pipe connection 2.5 MPa. Welded steel flange: for the mouth of the flange and pipe welding, its structure is reasonable, the intensity and rigidity, high temperature and high pressure and can withstand repeated bending and fluctuations in temperature, sealing dependable, nominal pressure for 0.252.5 MPa butt weld by sealing convex flange type.
Socket weld flange: common and PN? 10.0 MPa, DN? 40 pipe.
Loose pine sets of flange: known flange of living, welding flanges flanges, ring of live flanging of flange and welded to live to live of flange. Used to medium temperature and pressure are not tall and strong corrosive medium. When the corrosive medium, flange contact medium part (short) flanging for corrosion of high-grade material such as stainless steel material, but not as external use low levels of carbon materials, materials such as the flange ring clamping with sealing.
Overall flanges flanges and will often is equipment, pipes, fittings, valves, etc, this made in equipment and valve type used.
The seal welded flange flat, smooth and type can be made concave and convex and tenon groove 3 kinds. Smooth type of welding flanges YingYongLiang flat, mild conditions for medium under the condition of the purification, such as low pressure of compressed air, water, and its advantages are cheaper price.