The production equipment for hydraulic support pipes: a PQF three roll continuous pipe rolling unit with a diameter of 460 conical roll perforating machine and a limiting core rod, with a production specification of 245-457mm. It is expected to be produced by the end of this year or 1-2 next year

The unit will be put into operation in the month (with a designed production capacity of 500000 tons), and its target market is large-diameter, thick walled seamless steel pipes (including high-pressure boiler pipes) to replace domestic imports. At the same time, a heat treatment line will be equipped on the production line. liquid
Pressure support pipes shall comply with the standard GB/T17396-2009.
Hydraulic support pipe, in accordance with the standard GB/T17396-1998. Mainly used for making coal mine hydraulic supports and cylinders, columns, as well as other hydraulic cylinders and columns.
The representative materials of hydraulic prop pipes are 20, 45, 27SiMn, etc.
Heat treatment system: Both 20 and 45 are normalizing; 27SiMn (920 ± 20) ℃ water purification, (450 ± 50) ℃ tempering, coolant: oil or water.

Hydraulic support pipe is made of high-quality carbon structural steel with the appropriate addition of one or several alloying elements to improve the strength, toughness, and hardenability of the steel. After being made, this type of steel usually needs to undergo quenching and tempering, as well as chemical heating treatment