Pipe expansion process

Hot expansion steel pipe mandrel surface pulsating spray device is a device to a thermal expansion pipe mandrel surface spray lubricant, which is characterized by injection device body ring parts with lubricant reservoir burglary, in Chu burglary ring wall open lubricationagents enter the hole, motor Chu burglary side installation, its spindle by driving wheel and the middle with a lubricant output hole pulsating ring phase, the lower part of the output hole placement beam radio regulatory group equipped with a beam of radio regulation.

Pipe expansion process

What is seamless steel pipe and thermal expansion pipe?

Technically speaking, any seamless steel pipe can be called thermal expansion pipe, thermal expansion process is major production process of seamless steel pipe; while there is another type of thermal expansion pipe-large diameter seamless steel pipe, as it is not possible to reach desired diameter in one pipe thermal expansion process, this process have to be taken 2 times.

The main steel grades of the production pipes are: carbon (B/C/6), alloy (P11/P12/P22), high alloy (P5/P9/P91), and EN material (P235GH/P265GH). We also provide line pipes grades such as API 5L B / X42 in PSL 1 and 2.

As of today, the applications of these products are in petrochemistry, refineries and power generation projects. Our products are responding to the needs of our customers to reduce the global weight of their structures, in order to save time on construction.
The expander has the advantage of completing the range of products of both companies and allows us to offer packages.

Advantages are:

using spray lubricant to the mandrel surface, can reduce the frictional resistance between the tube rolling mandrel and steel pipe to reduce the pressure load of the mill and the mill's power consumption to extend the life of the mandrel, to improve the quality of the steel pipe rolling.

Hot expansion pipe with two-step push tube expanding machine set conical die expanding technology, digital intermediate frequency induction heating technology, hydraulic technology in a machine with a reasonable process, low energy consumption, lower capital investment, good product quality, a wide range of applicability of the raw material and product specifications, flexible variable cost of production volume, adaptability, replace the traditional steel industry, of Pullout expanding technology. difficult to resolve in the near future, the supply of large diameter steel pipe, thermal expansion pipe to become the source of the shortage of large-diameter steel pipe products. ease the tight supply situation of the large diameter pipe market.

Thermal expansion pipe has low density and high contraction property; It could replace part of the steel profiles; Saves about 1/3 of steel material, reduces protection layer area, lower the investment and maintenance cost.

Seamless pipe Specification, standard and identification

Seamless pipes are extensively applied for the nuclear device, gas, petrochemical, ship building and boiler industries. Seamless pipes dominates 65% of market share in Chinese boiler industry.