Forging steel: Pressure processing method that uses the reciprocating impact of a forging hammer or the pressure of a press to change the bank into the shape and size we need.Extrusion: It is a processing method in which the steel is enclosed in a closed extruder and pressure is applied at one end t

Anti-corrosion and thermal insulation pipeline construction When the anti-corrosion layer is constructed, the construction shall not be carried out without effective measures in rain, snow, wind and sand weather and environments with high relative humidity. The coating type anti-corrosion layer shou

Flange connection is an important connection method for pipeline construction.Flange connection is to fix two pipes, pipe fittings, or equipment on a flange plate respectively, add flange pads between the two flange plates, and fasten them together with bolts to complete the connection. Some pipe fi

1. Concentric butterfly valveThe structural feature of this kind of butterfly valve is that the shaft center of the valve stem, the center of the butterfly plate, and the center of the body are in the same position. The structure is simple and the manufacturing is convenient. Common rubber-lined but

The service life of galvanized steel pipe fittings is long, but the service life is different in different environments: 13 years in heavy industrial areas, 50 years in the ocean, 104 years in the suburbs, and 30 years in the city. The production of yellow water is directly caused by galvanizing. Du

According to the deformation principle of rolled parts, steel rolling is generally divided into the following three forms:1. Longitudinal rolling: the running direction (axis) of the rolled piece is perpendicular to the axis of the roll, and the rolled piece moves in a straight line; steel and plate

1. Welded steel pipes are produced continuously online. The thicker the wall thickness, the greater the investment in the unit and welding equipment, and the less economical and practical it is. The thinner the wall thickness, the lower its input-output ratio will be.2. The technology of this produc

‍(1) When the cooling is completed, that is, when the temperatures of the surface layer and the core are all consistent, the elastic deformation of the surface layer and the core will also disappear and return to the original state. Although instantaneous thermal stress is generated during the cooli

1. Power supply with vertical external characteristics is adopted, and the positive polarity is adopted for direct current (the welding wire is connected to the negative electrode).2. Generally suitable for the welding of thin plates below 6mm, with the characteristics of beautiful weld shape and sm

Commonly used welded steel pipes are divided into the following three types according to the welding process used in their production. ① Continuous furnace welding (forge welding) steel pipe: It is characterized by high production efficiency and low production cost, but the metallurgical combination