iron pipe in large diameter, wall thickness, very brittle, low intensity, the price is cheap.
Is a kind of economical water supply pipeline, the normal service life of 20 -
Ductile iron pipe is a kind of cast iron pipe.
In terms of quality, level of spheroidal graphite cast iron pipe should be controlled in 1 -
Level 3 (
Spheroidization rate & gt;
So that the mechanical properties of the material itself is a better improved, with the performance of the nature of the iron and steel.
Annealing and a small amount of pearlite ductile iron pipes group for ferrite.
Good mechanical performance, good corrosion resistance, good ductility, good sealing effect, convenient installation.
Mainly used in municipal water supply, gas, oil, industrial enterprises.
Ductile iron pipe is mainly used for drilling oil and gas Wells and oil and gas.
Include oil drilling pipe, oil casing and oil tube.
Oil drill pipe is mainly used to connect the drill collar and drill bit, drilling power transfer.
Oil casing mainly during the process of completion and supporting wall after completion, in order to make sure the oil Wells in the drilling process and normal operation after completion.
Main oil and gas from oil well pipe at the top to the ground.
Ductile iron pipe is the lifeblood of the well operation.
Due to the different geological conditions, underground complex stress state.
Tube body tension, pressure, and combination of bending and torsional stress, put forward higher requirements about the quality of the casing itself.
Once the casing damage of itself for some reason, the output of the whole well may be reduced or even scrapped.
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