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平焊不锈钢法兰适用于公称压力不超过2.5MPa的碳素钢管道连接，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最大，多用于介质条件比较缓和的情况下，如低压非净化压缩空气、低压循环水，它的优点是价格比较便宜。推制弯头是用推制机制造的。推制机实际很简单。它是一个牛角状芯头或芯棒，芯棒由细变粗，推制过程是一个扩径带弯曲的过程。后边有支撑，把下料管段穿入芯棒，后边有一牌坊架将芯棒固定。中间有一小车，小车有的通过液压传动，有的通过机械传动即丝杠传动，然后往前推小车。小车推着管子顺着芯棒往前走，芯棒外有一个感应圈，把管子加热，加热好，然后小车把管子推下。推好后，就此热状态下进行整形。这就加工好一个。对焊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0.25～2.5MPa的对焊法兰采用凹凸式密封面。松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，法兰接触介质的部分(翻边短节)为耐腐蚀的高等级材料如不锈钢等材料，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。
Stainless steel flat welding flange suitable for no more than 2.5MPa Nominal Pressure, Carbon steel pipe connections, flat welding flange sealing surface can be made smooth type, concave type and tenon trough of three. Flat welding flange smooth application of the largest, multi-media conditions for more relaxed situation, such as low non-clean air, low pressure circulating water, it has the advantage of relatively cheap price. Elbow push system is pushing the system machine-made. Push system machine actually very simple. It is a horn-shaped core head or mandrel, mandrel from small thicken, push the system process is a process of expanding with bending. Behind a support material under the pipe section to penetrate mandrel, one behind the arch frame will be fixed mandrel. The middle of a car, car and some by hydraulic transmission, some of that through the mechanical drive screw drive, and then push forward car. Pushing the tube along the mandrel car go forward, there is an induction coil outside the mandrel, the tube heating, heat is good, and then push the tube under the car. Push is completed, this thermal state under the plastic. This is a good process. Welded flange for the flange and pipe welding counterparts, reasonable structure, strength and stiffness to withstand high temperature and pressure, and repeated bending and temperature fluctuations, sealing reliability, nominal pressure 0.25 ~ 2.5MPa's butt flange sealing surface uneven. Loose set of sub-weld flange Looper flange, flange loose flanges and butt loose flanges. Commonly used in medium temperature and pressure are not high and medium corrosive situation. When the corrosive medium, the flange contact with the medium part (flange short section) high-grade corrosion-resistant materials such as stainless steel and other materials, while the external is the use of low grade materials such as carbon steel flange ring clamp it in order to achieve sealing.