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What are the quality requirements for steel pipe pickling
by admin on 08-06-23
(1) After pickling, the corrosion and oil stains on the inner wall of the steel pipe are all removed, and the cleanliness should meet the requirements of relevant standards. (2) Pickling parts must not be pickled. If the steel pipe is immersed in the pickling solution for too ...
Spiral steel pipe production process introduction and classification standards
by admin on 07-06-23
Spiral steel pipe production process: It is a spiral seam steel pipe made of strip steel coil as raw material, extruded at regular temperature, and welded by automatic double-wire double-sided submerged arc welding process. (1) Raw materials are strip steel coils, welding wire...
Straight seam steel pipe classification and welded steel pipe use guide
by admin on 06-06-23
Straight seam steel pipe refers to a welded steel pipe with one weld in the longitudinal direction of the pipe body. GB/9711.1 stipulates that when the diameter is greater than 914.4, the straight seam steel pipe can have two straight welds, and the angle between the welds is ...
Anti-corrosion process of anti-corrosion steel pipes
by admin on 05-06-23
In recent years, the demand for steel pipe insulation in various industries in China has increased. The production technology of domestic steel pipe anti-corrosion factories has been relatively mature, and various anti-corrosion products can be produced. Among them, 3PE anti-c...
Geometric Properties of Sections of Large Diameter Steel Pipes
by admin on 02-06-23
(1) Its node connection is suitable for direct welding, which does not need to pass through the gusset plate or other connectors, which saves labor and materials. (2) When necessary, concrete can also be poured into the tube to form a composite member. (3) The geometric charac...
How to judge the quality of spiral steel pipes
by admin on 01-06-23
1. From the surface of the spiral steel pipe to see whether the production process of the spiral steel pipe is exquisite. Generally, research and analysis of spiral steel are required, and the section of fake and inferior spiral steel pipes is oval. The reason is that the manu...
Technical requirements for steel bending pipes and analysis of factors affecting the quality of steel bending pipes
by admin on 31-05-23
Steel bending pipes are produced step by step, and then made into finished products. In the whole production process, because the pipes are required to be curved, and the bending of the pipes requires some technology, the degree of bending is also different. Then What are the ...
Deviation and Forming Method of Large Diameter Steel Pipe in Production
by admin on 30-05-23
Deviation of large-diameter steel pipes in production: common large-diameter steel pipe size range: outer diameter: 114mm-1440mm wall thickness: 4mm-30mm. Length: according to customer requirements can be made in fixed length or indefinite length. Large-diameter steel pipes ar...
The difference between hot-rolled seamless steel pipe and cold-rolled seamless steel pipe
by admin on 29-05-23
In terms of processing technology: hot rolling is hot processing, and cold drawing is cold processing. Hot rolling is rolling above the recrystallization temperature, and cold rolling is rolling below the recrystallization temperature; Distinguish from the appearance: the surf...
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