high strength p235gh steel is a low alloy heat resistant steel material

Pageviews:

In order to obtain the seamless tube with smaller size and better quality, the method of cold rolling, cold drawing or the combination of the two must be used. Cold rolling is usually carried out on a two high mill, and high strength P235GH steel pipes are rolled in a circular pass composed of a variable cross-section circular groove and a fixed conical head. Cold drawing is usually carried out on single chain or double chain cold drawing machines of 0.5-100t.

The large diameter cold drawn seamless steel pipe is a steel pipe with an outer diameter of more than 1000mm. The large diameter seamless steel pipe is made of steel ingot or solid billet through perforation and then hot rolling, cold rolling or cold drawing. If they are long, they need to remove the redundant parts, that is, cut them out. Their length high strength p235gh steel is suitable for the length required by the construction of steel pipes.

The outer diameter of the hot-rolled seamless pipe is generally larger than 32mm, and the wall thickness is 2.5-75mm. The diameter of the cold-rolled seamless pipe can be 6mm, the wall thickness can be 0.25mm, the outer diameter of the thin-walled pipe can be 5mm, and the wall thickness is less than 0.25mm. The size accuracy of the cold-rolled seamless pipe is higher than that of the hot-rolled seamless pipe, high strength p235gh steel.

Q245R (HIC) refers to the hydrogen sulfide corrosion resistant steel plate with the grade of Q245R. The corrosion test is only conducted for hydrogen induced cracking (HIC), and the composition requires melting analysis P ≤ 0.015, S ≤ 0.003; the finished product analysis P ≤ 0.015, S ≤ 0.004. high strength p235gh steel, Q245R plate is mainly used for reactor, heat exchanger, separator, spherical tank, oil and gas tank, liquefied gas tank, nuclear reactor pressure vessel, liquefied petroleum gas cylinder, turbine volute, etc.