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Process for the manufacture of a tap rod casing, and tap rod casing manufactured according to this process
Process for the manufacture of a tap rod casing, and tap rod casing manufactured according to this process
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机译:制造抽油杆杆套的方法以及根据该方法制造的抽油杆杆套
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摘要
A tap rod casing 1 includes an upper part 1a which is deep-drawn and a lower part 1d which is made of stainless steel plate shaped into a tube. Both parts are joined together by welding to form an integral casing. IMAGE
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