Use of tungstenless hard alloys for the safety valves of...

Use of tungstenless hard alloys for the safety valves of drilling pumps

T. A. Vorob'eva, G. V. Dubko, A. I. Varenov
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Volume:
15
Language:
english
Pages:
2
DOI:
10.1007/bf01175387
Date:
July, 1979
File:
PDF, 136 KB
english, 1979
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