News
-
How to avoid rusting of precision stainless steel pipe fittings
1. Do not contact other metals, because stainless steel pipe fittings will be rusted by the attachment of dissimilar metals, such as screws, etc. Although it is not serious at the beginning, if you wipe it with a cloth and a neutral detergent, you will see rust. 2. Another fac...Read more -
The difference between thin-walled spiral steel pipe and thick-walled spiral steel pipe
The concept of thin-walled spiral steel pipe: the strip steel is fed into the welded pipe unit, rolled by multiple rollers, the strip steel is gradually rolled up to form a circular tube billet with an opening gap, and the reduced amount of the extrusion roller is adjusted to ...Read more -
Eddy’s current non-destructive testing method for a weld seam of spiral welded pipe
Pipeline transportation, as an efficient means of special transportation, has played an increasingly important role in oil and gas transportation and other fields. At present, domestic large-diameter transportation pipelines are mainly constructed of spiral welded steel pipes....Read more -
Large-diameter welded pipe production process
Large-diameter welded pipe production process 1: Conduct physical and chemical inspections of raw materials such as strip steel coils, welding wires, and fluxes. 2: The head-to-tail butt joint of the strip steel adopts single-wire or double-wire submerged arc welding, and auto...Read more -
Description of the length and mechanical properties of large-diameter steel pipes
The main processing methods of large-diameter steel pipes are: forging steel: a pressure processing method that uses the reciprocating impact force of a forging hammer or the pressure of a press to change the blank into the shape and size we need. Extrusion: It is a processing...Read more -
Selection of anti-corrosion coatings for steel pipes
There are many kinds of steel pipe anti-corrosion coatings, and their properties and uses are different. The correct selection is very important for the anti-corrosion effect and service life of the coating. When choosing, you should consider: 1. The properties of the surface ...Read more -
The difference between submerged arc welded spiral steel pipe and straight seam high frequency welded steel pipe
The submerged arc welding spiral steel pipe uses continuous welding wire as the electrode and filler metal. During work, a layer of granular flux is covered in the welding area. The arc of the large-diameter spiral pipe burns under the flux layer to melt the end of the welding...Read more -
Realize automatic flaw detection and eddy current detection of tubing couplings
The oil industry is inseparable from various pipelines. For a long time, oil production plants have been troubled by the recycling of oil steel pipes, because a large number of oil pipes go directly into the well without inspection and treatment, and may break down or leak at ...Read more -
The difference between hot simmering steel bending pipe and cold simmering steel bending pipe
The process is as follows: After the straight pipe is cut, the induction coil is put on the part of the steel pipe to be bent by the bending machine, the pipe head is clamped by the mechanical arm, and the intermediate frequency current is passed through the induction coil to ...Read more