Commonly used welded steel pipes are divided into the following three types according to the welding process used in their production. ① Continuous furnace welding (forge welding) steel pipe: It is characterized by high production efficiency and low production cost, but the metallurgical combination
1. Welded steel pipes for low-pressure fluid transportation are used to transport water, gas, steam, compressed air, etc.; structural welded steel pipes can be used to manufacture scaffolding, trusses, towers, playgrounds, railings, etc.;2. Special-shaped tubes for steel doors and steel windows are
The connection of the pipe fittings is based on the required performance of the pipe connection. The connection types between the pipe fittings and between the pipe fittings and the pipe are butt welding connection, socket welding connection, pipe thread connection, and flange connection.1) Butt-wel
How to keep stainless steel pipes When storing, pay attention to moisture, dust, oil, lubricating oil, etc., as well as rust on the surface, or poor welding corrosion resistance. When moisture is immersed between the film and the steel substrate, the corrosion rate is faster than when there is no fi
Submerged arc steel pipe has become the steel pipe of large-scale oil and gas transportation projects at home and abroad due to its large wall thickness, good material quality and stable processing technology. In large-diameter submerged arc steel pipe welded joints, the weld seam and heat-affected
1. The production process is simple.2. Less equipment, simple structure, lightweight, easy to realize continuous, automatic, and mechanized production.3. Low product cost.4. It is suitable for a wide range of varieties and specifications, with a diameter of 6-3100mm and a wall thickness of 0.3-35mm.
A. The feature of non-destructive testing is that it can be tested without damaging the material and structure of the test piece, so after the implementation of non-destructive testing, the inspection rate of the product can reach 100%. However, not all items and indicators that have to be tested ca
The casting measures for stainless steel pipe fittings are: 1. Since the shrinkage of stainless steel pipe fitting casting is much greater than that of cast iron, to prevent shrinkage cavities and shrinkage porosity d
Straight seam steel pipes are steel pipes with welds that are longitudinally parallel to the steel pipe. They are usually divided into metric electric welded steel pipes, electric welded thin-walled pipes, transformer cooling oil pipes, etc. The production process of straight seam welded pipe is sim
