METHOD AND DEVICE FOR MANUFACTURING HOLLOW PUMP RODS Russian patent published in 2004 - IPC

Abstract RU 2233214 C2

FIELD: working of metal.

SUBSTANCE: method includes manufacturing hollow members of the body and the head of the rods separately and then their welding with given technological parameters of thermal treatment, thermomechanical treatment, and welding regime.

EFFECT: enhanced stability and decreased labor consumption.

5 cl

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RU 2 233 214 C2

Authors

Soljanikov B.G.

Lorents F.F.

Beljaev S.N.

Dates

2004-07-27—Published

2002-04-01—Filed