Welding technology of direct welded steel pipe:The use of small size model can avoid stress corrosion, hot cracks and deformation, electric welding current is 20% lower than high carbon steel.

General flange connection speed, convenient construction, simple tools, but in terms of safety, airtightness can not meet most of the project regulations, general low pressure pipeline, often move the application of pipeline suitable for this type of connection, such as mud drainage pipeline.

Tungsten can improve the red hardness and thermal strength of spiral steel pipe, and can improve the wear resistance of spiral steel pipe.

In daily life, to ensure the thermal stability of anti-corrosion spiral pipe, we should choose to stack in a relatively clean and tidy and smooth drainage place, must be far away from the production of harmful gases or dust factories and mines. The site to remove weeds and all debris, keep the steel clean. In the storage should pay attention to can not be placed in and acid, alkali, salt, cement and other substances next to the steel can not have erosive materials stacked together, will have an impact on it. And it is best to be divided into categories to put a variety of different materials of steel, so you can effectively avoid the problem of confusion, and can effectively prevent contact corrosion.

Galvanized spiral pipe features: straight seam welded pipe production process is simple, high production efficiency, low cost, faster development.

Steel pipe with the ratio of outer diameter and wall thickness less than 20 is called thick-walled spiral pipe. Mainly used as petroleum geological drilling pipe, petrochemical cracking pipe, boiler pipe, bearing pipe and high precision structural pipe for automobile, tractor, aviation and so on.

In the spiral submerged arc welded pipe coil molding production process, one of the common molding process defects have pipe diameter overrun. What is the cause of this defect?

The Submerged Arc Welding process is ideal for the critical applications of piping, pressure vessels and tanks, railroad track fabrication and major construction, and is available in the simplest form of single filament, double filament, tandem double filament and multi-filament configurations.

Spiral submerged arc welded pipe coil forming method for the upward roll forming method, upward roll forming of various specifications of the bottom surface elevation of the steel pipe remains unchanged, so the ancillary equipment is simpler, easier to manufacture, civil engineering work is also small; but the height of the outer weld head to be adjusted with the change in the outer diameter of the steel pipe. When winding, the inner welding head is near the entrance of the strip, it can be easier to replace the conductive nozzle and other parts; and do not have to cut holes in the steel pipe, saving both steel and time.

3PE anticorrosion steel pipe refers to the 3-layer structural polyolefin coating (MAPEC) external anticorrosion steel pipe, which is a commonly used anticorrosion pipe in China. At present, 3pe steel pipe is widely used, is an indispensable kind of steel pipe in the pipeline industry, so do you know why 3PE steel pipe is so popular? Today we will learn what advantages 3PE anti-corrosion steel pipe has to make it widely used.