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Internal anti-corrosion treatment method for large diameter spiral steel pipe
The construction of cement mortar fabric should usually be carried out after the spiral pipe has been laid, the pressure test has passed, and the covering soil has been compacted according to the planning requirements. Due to the small stiffness and thin wall of the steel pipe, the pipe must be i...Read more -
What materials are used to prevent corrosion of steel pipelines
Steel pipeline anti-corrosion materials are divided into steel pipeline-themed anti-corrosion materials and their corresponding patching materials. The main body anti-corrosion mainly includes petroleum asphalt, epoxy coal asphalt, anti-corrosion cold-wound tape, epoxy powder, PE coating, and PP ...Read more -
What are the production processes of seamless steel pipes
What are the production processes of seamless steel pipes? Relying on its characteristics and strengths, seamless steel pipes are increasingly used in fields such as the installation of large equipment and the hydraulic machinery industry. Compared with the common steel pipes (welded pipes) befor...Read more -
How to manage the safety of spiral steel pipes
To solve the problem of excessive misalignment in the alignment of spiral steel pipe nozzles, the following preventive measures should be taken in quality management control: 1. Try to use internal alignment devices. 2. Carry out engineering measurement and trimming work during assembly. 3. When ...Read more -
Comparison between plastic-coated steel pipes and 3PE anti-corrosion steel pipes
Plastic-coated pipes, also known as plastic-coated steel pipes, steel-plastic composite pipes, and plastic-coated composite steel pipes, are based on steel pipes and use PE (modified polyethylene) for hot dip molding or EP (epoxy resin) as the main anti-corrosion raw material. It is a steel-plast...Read more -
Comparison of the advantages and disadvantages of spiral steel pipe and straight steel pipe welds
The weld seam of spiral steel pipe is longer than that of straight seam steel pipe. If the pipe length is L, the weld seam length is L/cos(θ). Most of the defects in steel pipes are concentrated in the welds and heat-affected zones. Long welds mean a high probability of defects. This is the main ...Read more -
How to detect plastic-coated steel pipes
Plastic-coated steel pipes, also known as plastic-coated pipes, steel-plastic composite pipes, and plastic-coated composite steel pipes, are based on steel pipes. A layer of plastic anti-corrosion layer or plastic anti-corrosion layer is fused to the inner surface of the steel pipe (bottom pipe) ...Read more -
How to prevent corrosion when welding galvanized steel pipes
Anti-corrosion of galvanized steel pipe welding: after surface treatment, thermal spray zinc. If galvanizing is not possible on site, you can follow on-site anti-corrosion methods: apply epoxy zinc-rich primer, epoxy mica iron intermediate paint, and polyurethane topcoat. The thickness refers to ...Read more -
Large-diameter seamless steel pipe is a steel product formed by cold drawing, cold rolling, etc.
Large-diameter seamless steel pipes are steel products formed by cold processing such as cold drawing and cold rolling. The state in which they are delivered directly without any heat treatment is called cold drawn or cold rolled state. Compared with the hot-rolled (forged) state, steel in the co...Read more -
What is coated steel pipe
Coated steel pipes are coated with plastic based on large-diameter spiral welded pipes and high-frequency steel pipes, with a maximum pipe diameter of 1200mm; they can be coated with polyvinyl chloride (PVC), polyethylene (PE), and ring-shaped steel pipes according to different needs. Oxygen resi...Read more -
Introduction of 316L stainless steel thick wall steel pipe
316L stainless steel thick-walled steel pipe is a molybdenum-containing stainless steel. Because the steel contains molybdenum, the overall performance of this steel is better than 310 and 304 stainless steel. Under high-temperature conditions, when the concentration of sulfuric acid is lower tha...Read more -
Analysis of accidents prone to occur on the heating surface of boiler steel tubes
Boiler heating surface pipes work for a long time under the action of high temperature, stress, and corrosive media. When the steel pipes cannot withstand the load of their working conditions, different forms of damage will occur and cause accidents. Common accidents on heating surface pipes of b...Read more