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平焊法兰的主要设计缺点是它不能保证无泄漏。这就是其设计上的不足：连接是动态的，而且诸如热膨胀和起伏不定的周期载荷都会造成法兰面之间的移动，影响法兰的功能，从而使法兰的完整性受损，最终导致泄漏。任何产品都不可能没有缺陷，只是尽量控制产品的不足到最少，所以公司在生产平焊法兰时尽量完善产品的性能，使之发挥最大的作用。平焊法兰不仅节省了空间、减轻了重量，更重要的是确保接头部位不会发生泄漏，具有良好的密封性能。紧凑法兰尺寸之所以减小，是由于减小了密封件的直径，这将会减小密封面的截面，法兰连接是管道施工的重要连接方式。法兰连接就是把两个管道、管件或器材，先各自固定在一个法兰盘上，两个法兰盘之间，加上法兰垫，用螺栓紧固在一起，完成了连接。有的管件和器材已经自带法兰盘，也是属于法兰连接。法兰盘只是一个统称，通常是指在一个类似盘状的金属体色的周边开上几个固定用的孔用于连接其它东西。它的作用是连接及传动。这东西在机械上应用很广泛，所以样子也千奇百怪的，只要像就是叫法兰盘。当管道出现故障或检修时，也可很方便拆开。另外如在大的闸阀开关处两边，都设有法兰盘，就是为了拆换开关方便。
Flat welding flange of the major design drawback is that it can not guarantee no leakage. This is less than its design: the connection is dynamic and fluctuating, such as thermal expansion and the cycle of load will cause the movement between the flange surface, affecting the functions of flange, so that the integrity of flange damage, resulting leakage. Any product can not be without flaws, the deficiencies are simply trying to control products to a minimum, so the company in the production of flat welding flange improve product performance as far as possible to make the maximum impact. Flat welding flange not only saves space, reduces weight, more importantly, to ensure that joints do not leak, has good sealing performance. The reason why compact flange size reduction is the result of reduced diameter seals, which will reduce the sealing surface of the section, flange connection is an important connection pipeline construction. Flange connection is to the two pipes, fittings or equipment, each first fixed in a flange on the flange between the two, together with flange pad, fastened together with bolts to complete the connection. Some fittings and equipment have built-flange, flange connection also belongs. Flange is a general term usually refers to the metal in a similar color discoid open on the periphery of several fixing holes for connecting other things. Its role is to connect and drive. This stuff is widely used in machinery, it looks too strange, as long as the image is called the flange. When the pipeline failure or maintenance, they can easily open. Also as in large office gate switch sides, are equipped with flange is easy to replace them switch.