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Points to note when cutting rectangular tubes
by admin on 20-05-20
Points to note when cutting rectangular tubes 1. For the place to be cut, wipe off the oil, debris or mud on the surface of the rectangular tube with a rag or soft cloth. 2. Be sure to select special stainless steel cutting tools. 3. According to the construction drawing and the situation on site...
Features of pipeline NDT
by admin on 20-05-19
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...
Welding control of thick-walled steel pipes
by admin on 20-05-12
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 ...
Straight seam steel pipe purity improvement
by admin on 20-05-11
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...
Preparation for trenchless repair of pipelines
by admin on 20-05-07
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...
How to prevent decarburization of steel pipes?
by admin on 20-05-06
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...
Three main differences between oil casing pipe and oil drill pipe
by admin on 20-04-28
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...
large-diameter thin-walled pipes
by admin on 20-04-27
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...
Large-diameter steel pipe connection type
by admin on 20-04-26
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...
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