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The difference between the flat welding flange of the butt welding flange

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…

Installation and use of butt welding flange

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,…

Welding technology of butt-weld flanges

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.…

Quality Control of Forged Pipe Fittings

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,…

Production and Quality Inspection of Eccentric Reducers

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…

Manufacturing Technology of Insulated Steel Pipes

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…

The Function and Characteristics of Expansion Joints

Expansion joints are pipe fittings used to compensate for thermal expansion and contraction, deformation, and other issues caused by temperature changes, earthquakes, and other factors to ensure the safe operation of pipelines. Their functions and characteristics are as follows: Function (1) Expansion joints can effectively solve the problem of thermal expansion and contraction caused by temperature changes, prevent pipelines from being subjected to excessive stress and deformation. (2) Expansion joints can effectively reduce the impact of pipelines during natural disasters such as earthquakes caused by ground movement, avoiding pipeline rupture and leakage. (3) Expansion joints can play a role in…

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