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    Details:   Adopts two-stage shot blasting surface strengthening technology.  To select high-class alloy steel die forging molding;  Intensity check uses finite element analysis, and electrical measuring method...
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Dongying Haixin Petroleum Equipment Co. Ltd.
Add:Management Committee building,shengli industryzone,Xicheng, Dongying City zone,Shandong,China
Tel:+86-546-7755028
Fax:+86-546-7718870
E-mail:[email protected]

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