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How to Increase the Stability of Double-sided SAW Spiral Steel Pipe
1. Small and medium-sized steel, wire rods, reinforcing bars, medium-sized steel pipes, steel wires and wire ropes can be stored in well-ventilated material shed, but they must be upholstered and underlayed.
2. Some small steel products, thin steel plates, steel strips, silicon steel sheets, small-caliber or thin-walled steel tubes, various cold-rolled and cold-drawn steel products, as well as high-priced and corrosion-prone metal products, can be stored in storage.
3. How to increase the stability performance of double-sided submerged arc welded spiral steel pipes? The site or warehouse should be located in a clean and smooth drainage area, away from factories and mines that produce harmful gases or dust. Weeds and all debris should be removed from the site to keep the steel clean.
4. Large section steel, rail, humiliating steel plate, large diameter steel pipe, forgings, etc. can be stacked in the open air.
5. No corrosive materials such as acid, alkali, salt and cement should be stacked together in the warehouse. Different kinds of steel should be stacked separately to prevent confusion and contact corrosion.
Standards and Classification
standard
The commonly used standards of spiral pipe are generally divided into: SY/T5037-2000 (ministerial standard, also known as spiral submerged arc welded steel pipe for ordinary fluid transmission pipeline), GB/T9711.1-1997 (national standard, also known as technical conditions for delivery of oil and gas industry pipeline Part I: A grade steel pipe (strict requirements of GB/T9711.2 B grade steel pipe), API-5L (American Petroleum Association, also known as pipeline steel pipe); L1 and PSL2, SY/T5040-92 (spiral submerged arc welded pipe for piles).
classification
Spiral submerged arc welded pipe for pressure-bearing fluid transportation is mainly used for pipelines conveying oil and natural gas. It has strong pressure-bearing capacity, good plasticity and is easy to weld and process. Generally, the spiral submerged arc welded pipe for low-pressure fluid transportation is made by double-sided automatic submerged arc welding or single-sided welding, and is used for submerged arc welded pipe for water, gas, air and steam conveyance.
