Method of producing steel pipe material for oil well

Details Method of producing steel pipe material for oil well Method of producing steel pipe material for oil well

1979-08-29

1981-08-04

Dean, R.

Metal treatment

Process of modifying or maintaining internal physical...

Chemical-heat removing or burning of metal

148 36, C21D 118

Patent

active

042820472

ABSTRACT:
The method of producing steel pipe material for an oil well is characterized in that, as for the chemical composition of steel, B contained steel is adopted avoiding the addition of Ti which increases the values of non-metallic inclusions to decrease machinability, the value of N is limited to not more than 0.003% to be decreased in content of nitrides, coarse crystal grains due to the decreased content of N are prevented through austenizing of steel under rapid heating, so that such a steel pipe material for an oil well can be obtained that which has resistance to sulfide stress corrosion in addition to satisfactory strength and machinability.

REFERENCES:
patent: 3992231 (1976-11-01), Timmons

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