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Features of pipeline NDT
Features of pipeline NDT The characteristic of non-destructive testing is that it can be tested without damaging the material and structure of the test piece. Therefore, after implementing non-destructive testing, the inspection rate of the product can reach 100%. However, not all items and indic...Read more -
Welding control of thick-walled steel pipes
1. Welding temperature control of thick-walled steel pipes The welding temperature is affected by the high-frequency eddy current thermal power. The high-frequency eddy current thermal power is affected by the current frequency. The eddy current thermal power is proportional to the square of the ...Read more -
Straight seam steel pipe purity improvement
High frequency welded pipe flattening cracking is caused by welding micro cracks, hard and brittle phase inclusions, coarse grain-like structure, etc. In order to control the welding seam well, the concept of welding inclusion crack index is proposed. Mainly caused by insufficient welding strengt...Read more -
Preparation for trenchless repair of pipelines
1. Preset the required materials (and add 1m to the actual demand of the existing pipeline). 2. On-site length measurement of the pipeline. 3. Measure the on-site pipeline, understand the size of the tube well, and measure in all directions and all directions. 4. The inspection of mechanical equi...Read more -
How to prevent decarburization of steel pipes?
Once decarburization occurs in the production process of the steel pipe, it will affect the subsequent process and reduce the high-quality performance and service life of the steel pipe itself. Therefore, manufacturers usually take appropriate measures to avoid or solve this problem In general, t...Read more -
Three main differences between oil casing pipe and oil drill pipe
1.Uses of oil casing pipe and oil drill pipe: Oil casing is a steel pipe used to support the well wall of oil and gas wells to ensure the normal operation of the entire oil well during the drilling process and after completion. Each well will use several layers of casing according to different dr...Read more -
large-diameter thin-walled pipes
large-diameter thin-walled pipes 1. Generally large-diameter thin-walled pipes are used for the transportation of generally lower-pressure fluids such as water, gas, air, oil and heating steam. 2. Ordinary carbon steel wire bushings are steel pipes used to protect wires in electrical installation...Read more -
Large-diameter steel pipe connection type
Large-diameter steel pipe connection type 1. Quick-connect flange type: perform circular argon arc welding on the flange and the supporting parts, and use the fast clip to compress the gasket between the flanges to play a sealing role and complete the supporting connection. 2.Welding type: Perfor...Read more -
Adaptability of epoxy resin coated steel pipe
The coating of epoxy resin coated steel pipe belongs to thermosetting plastic, which combines the advantages of steel and plastic, and its scope of application includes: 1. Fire sprinkler system and domestic water supply and drainage; 2. Gas drainage, mud transportation and ventilation system i...Read more -
Product characteristics of epoxy resin coated steel pipe
Product characteristics of epoxy resin coated steel pipe 1. High mechanical properties. It has the same strength as steel, and the surface has strong cohesion and dense molecular structure, so its mechanical properties are higher than general-purpose thermosetting resins such as phenolic resin an...Read more -
What are the quality requirements for pipeline pickling?
What are the quality requirements for pipeline pickling? (1) After pickling, the rust and oil stains on the inner wall of the pipe are completely eliminated, and the cleanliness should meet the requirements of the relevant standards. (2) Pickling parts must not be over pickled. If the pipeline is...Read more -
What are the characteristics of large diameter steel pipes?
What are the characteristics of large diameter steel pipes? 1. Impact toughness: The load acting on the machine parts at a high speed is called impact load, and the ability of metal to resist damage under impact load is called impact toughness. 2. Strength: Strength refers to the resistanc...Read more