Slip On Flange The Slip On type flanges are attached by two fillet welds, inside as well as outside the flange. The calculated strength from a Slip On flange under internal pressure is of the order of two-thirds that of Welding Neck flanges, and their life under fatigue is about one-third that of the latter. Normally, these flanges are of forged construction and are provided with hub. Sometimes, these flanges are fabricated from plates and are not provided with the hub.The disadvantage of the flange is that a combination of flange and elbow or flange and tee is not possible…

ASME B16.5 standard covers Steel Pipe Flanges and Flanged Fittings from NPS 1/2 through NPS 24 Metric/Inch in pressure class 150 to class 2500. It covers pressure-temperature ratings, materials, dimensions, tolerances, marking, testing, and methods of designating openings for pipe flanges and flanged fittings. Two very important flanges such as weld neck flange and blind flanges are very commonly used in piping systems. The term “B16.5” or “B16 5” is used interchangeability and refers to same standard. However, the standard ASME B16 5 (ANSI B16 5) only covers size up to 24 inches. For bigger sizes, ASME B16.47 standard covers…

The flat welded flange not only saves space, reduces weight, but more importantly ensures that the joint is not leaked and has good sealing performance. The reduced size of the compact flange is due to the reduced diameter of the seal which will reduce the cross-section of the seal face. Secondly, the flange gasket has been replaced by a sealing ring to ensure that the seal faces the sealing surface. In this way, only a small amount of pressure is required in order to press the cover tightly. As the required pressure is reduced, the size and required number of…

Connection type： 1）Butt welding connection is to fix all the two parts after spot welding, of course, the welder’s requirements are also slightly higher, because the butt welding needs to do 100% RT inspection under strict working conditions, Butt welding connection is common used in chemical oil, electric power, gas and steel industries. 2) Socket welding is to weld the pipe into the valve body for welding, and the shape of the internal thread connection is similar after molding. Generally speaking, carbon steel pipes and stainless steel pipes of 2″ or less are used for socket welding. Stainless steel pipes…

What is a flange?A pipe flange is a method of connecting pipes, valves, pumps and other equipment to form a piping system. It also provides easy access for cleaning, inspection or modification. Flanges are usually welded or screwed. Flanged joints are made by bolting together two flanges with a gasket between them to provide a seal. Carbon Steel Flanges are required for making tight, secure, & leak-free connections to an existing piping system according to need. XF Flanges have pre-drilled holes for hassle-free bolting using appropriate fasteners. XF flanges are also suitable for making fire pipe fitting in a reliable…

The diameter and wall thickness of the butt welding flange are the same as the pipe to be welded, and it is welded like two pipes. The flat welding flange is a concave table slightly larger than the outer diameter of the pipe processed at the interface, and the pipe is inserted and welded inside. Butt welding has better welding performance and less corrosion. Flat welding and butt welding are the welding methods for connecting flanges and pipes. When welding flat welding flanges, only one-sided welding is required, and there is no need to weld the inner opening of the…

Before installing the butt welding flange, pay attention to check whether the nominal pressure of the flange meets the design requirements; check whether the sealing surface of the flange is smooth and clean, whether there are burrs and radial grooves, and whether the threaded part of the flange is Complete and undamaged. Whether the concave-convex flange can be naturally fitted in, especially the non-destructive testing of the welding flange must be done well, so as not to damage the inside of the welding flange and affect the performance and service life of the flange. Before installing the butt welding flange,…

Butt-weld flanges are a commonly used pipe connection method, which is usually used in high-pressure and high-temperature pipe systems. The welding technology of butt-weld flanges is crucial for the safe operation of the pipe system, so some key technical details should be noted during the welding process. Firstly, appropriate welding materials and equipment should be used for butt-weld flange welding. Generally, welding wires and welding rods are used for butt-weld flange welding, while welding equipment includes arc welding machines, gas shielded welding machines, etc. Selecting appropriate welding materials and equipment can ensure the quality and stability of butt-weld flange welding.…

Forged pipe fittings are widely used in industries such as petrochemicals, natural gas, and nuclear power. Quality control of forged pipe fittings is an important part of ensuring the safe operation of the pipe system. This article will provide a detailed introduction to the quality control of forged pipe fittings. Firstly, the materials used for forged pipe fittings must meet the requirements. Steel, alloy steel, etc. are commonly used materials for forged pipe fittings. These materials must comply with relevant standards and specifications, and the chemical composition, mechanical properties, physical properties, etc. of the materials must meet the requirements. Secondly,…

锻制管件是一种管道连接件，广泛应用于石油化工、天然气、核电等领域。锻制管件的质量控制是保证管道系统安全运行的重要环节。本文将就锻制管件的质量控制进行详细介绍。 首先，锻制管件的材料必须符合要求。钢材、合金钢等是常用的锻制管件材料。这些材料必须符合相关的标准和规范，材料的化学成分、力学性能、物理性能等必须满足要求。 其次，锻制管件的锻造工艺必须得到控制。在锻造过程中，必须控制好锻造温度、锻造速度、锻造压力等参数，以确保锻件的内部结构和外部形貌符合要求。同时，还要避免出现气孔、夹杂物等缺陷，保证锻制管件的质量。 第三，锻制管件的热处理必须严格控制。热处理是锻制管件成品的重要工艺环节，对锻件的力学性能和内部结构有重要影响。热处理过程中，必须控制好温度、时间、冷却速率等参数，以确保锻制管件的力学性能和内部结构符合要求。 第四，对锻制管件进行无损检测。常用的无损检测方法包括超声波检测、X射线检测、磁粉检测等。通过无损检测，可以检测锻制管件的内部结构是否存在缺陷、夹杂物等问题，确保锻制管件的质量。 最后，对锻制管件进行外观检查和尺寸检查。外观检查主要是检查锻制管件的表面是否有裂纹、气孔、夹杂物等缺陷；尺寸检查主要是检查锻制管件的尺寸是否符合要求。这些检查可以通过可视检查、量具检查等方法进行。 需要注意的是，锻制管件的质量控制是一个系统性的过程，需要从原材料采购到成品出厂的全过程进行控制。在质量控制过程中，需要遵守相关的标准和规范，严格执行质量控制程序，确保锻制管件的质量符合要求。 总之，锻制管件是管道系统中重要的连接件，其质量控制是保证管道系统安全运行的重要环节。在锻制管件的质量控制过程中，需要控制好材料、锻造工艺、热处理、无损检测等关键环节，严格执行质量控制程序，确保锻制管件的质量符合要求。

Eccentric reducers are pipe fittings used to connect pipes or equipment with different diameters. They have the advantages of easy connection, simple structure, and good sealing performance and are widely used in industries such as petrochemicals, natural gas, and nuclear power. This article will introduce the production and quality inspection of eccentric reducers. I. Production Process The production of eccentric reducers mainly includes material procurement, forging, processing, heat treatment, and other processes. Among them, forging is the key process of eccentric reducer production. The process needs to control forging temperature, forging speed, forging pressure, and other parameters to ensure that…

Insulated steel pipes are a type of pipeline product with insulation performance, widely used in industries such as oil, chemical, and urban heating. The manufacturing technology of insulated steel pipes is crucial for ensuring their quality and performance. This article will introduce the manufacturing technology of insulated steel pipes. The manufacturing technology of insulated steel pipes mainly consists of four steps: steel pipe pretreatment, insulation layer manufacturing, outer casing manufacturing, and anticorrosive layer manufacturing. Steel Pipe Pretreatment Steel pipe pretreatment is the first step in the manufacturing of insulated steel pipes, which mainly includes cleaning, derusting, and priming of steel…