3pe anti-corrosion steel pipeline is a relatively advanced anti-corrosion technology in recent years. Its full name is fused epoxy/extruded polyethylene structural protective layer. The structure of the 3pe anti-corrosion steel pipeline consists of the following three layers: the bottom layer is fus
Stainless steel flanges are not completely rust-free, but their oxidation resistance is stronger than ordinary steel, so it is called stainless steel.Stainless steel not only can resist atmospheric oxidation but also can corrode in a medium containing acid, alkali, and salt. However, the size of its
Stainless steel pipe fittings have high requirements on the quality of the pipe material and have higher requirements on the outer diameter ovality, wall thickness, and physical function of the rubber ring of the drainage cast iron pipe. Due to the poor watertight performance of the flat joint, in a
(1) There are gravity water pipes and pressure water pipes for water delivery steel pipes. The gravity water conveying steel pipe adopts the self-flow method, the inspection wells are set up according to the requirements, and the spacing is generally 200-400m. In general, intake valves and exhaust v
Galvanized steel pipe is also called galvanized steel pipe. Galvanized steel pipe can increase the service life of steel pipe and prevent rust to a certain extent. This encyclopedia will introduce the classification, main uses, and process characteristics of galvanized pipes.Classification1. Hot-dip
There will be rust spots on the elbow of the stainless steel pipe, indicating that the elbow is not made of pure stainless steel, but is a stainless steel elbow of electroplating type. The rust spots can be polished with ultra-fine sandpaper and then sprayed with colorless varnish for anti-rust trea
Welding, also known as fusion, is a manufacturing process and technique that can join metals or other thermoplastic composite materials (such as plastics) by applying heat, high temperature, or high pressure. There are three welding methods:1. Fusion welding. The workpiece is heated to form a molten
Selection requirements for submerged arc steel pipes:1. For pipelines with high peak shaving requirements, due to the uneven gas consumption of users, frequent fluctuations in pipeline pressure, and great alternating stress on the steel pipe, the existing defects in the pipe will expand under the al
The steel reducers belong to chemical pipe fittings and are used for the connection between two pipes of different diameters. According to different shapes, it is divided into two types: concentric steel reducers and eccentric steel reducers. The head material includes stainless steel head (304304l3
1 Judging from the surface, that is, in visual inspection. Visual inspection of welded joints is a simple procedure with a wide variety of inspection methods and is an important part of finished product inspection, mainly to find welding surface defects and dimensional deviations. Tests are generall
