The manufacture of cold-formed hollow section is regulated by European standard EN 10219-2006 1-2. The manufacture of hot rolled hollow section steel for structure is regulated by European standard EN10210-2006 1-2.
Cold-drawn steel pipe is a whole steel pipe without seams on its surface, which is produced by drawing, extrusion and piercing. It is a kind of circular, square and rectangular steel with hollow section and no joint around it.
The cold-drawn seamless tubes of high quality carbon structural steel are mainly made of No. 10 and No. 20 steel. In addition to ensuring chemical composition and mechanical properties, hydraulic test, edge rolling, flattening and other tests are required.
Pipe spray paint is a kind of coating material with excellent performance. It has good electrical insulation, waterproof and impermeability, as well as anti-microbial erosion ability. Pipe spray paint ...

What is the difference between g...
Manufacturing process difference: Galvanized steel pipe and seamless steel pipe are two categories of steel pipe. ...

Do galvanized steel pipes need anti-rust paint
After galvanizing, the surface of the steel pipe is covered with a zinc coating, which separates the steel pipe...

How to maintain stainless steel welded pipe equipment?
Stainless steel welded pipe equipment has many units, such as welding machine, pipe making machine, polishing mach...

What is the National Standard for High Frequency Welded Pipe
I think that if the amount of steel used per square meter exceeds 50 kilograms, it belongs to Chongqing Steel ...