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The shell of Ram BOP has ram slot which is easy for sand-cleaning and assure the open and shut of rams flexible. In addition, Rams could self-center by using skateboard. The cylinder plunger has fastening bolts by which the location of the plunnger could be observed. According to demands, two or four flanges or threasws connetion could be designed.

* Bore hole: 179,4;228,6;279.4;346.1mm
* Pressure:21,35,70,105 Mpa
* Connection: Threaded connection or flange connection






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