The difference between the straight seam steel pipe and spiral steel pipe. The production process of longitudinally welded pipe is relatively simple. The main production processes are high-frequency welded longitudinally welded pipe and submerged arc welded longitudinally welded pipe. The longitudin

1, 3PE anti-corrosion steel pipe construction is convenient, the steps are simplified, convenient, and quick, and the processing plant and the site can be constructed. The anti-corrosion process is relatively simple and does not require major equipment and sites. It is suitable for on-site construct

(1) Check the geometric dimensions of the steel pipeThe outer diameter, wall thickness, curvature, and length of the steel pipe can be inspected on the inspection table with an external caliper, a micrometer, a bending ruler, and a long tape measure.(2) Inspection of an inner and outer surface of st

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