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,…

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…

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…