double bolts polished rod clamp
Product Description
We can supply full line of polished rod clamps and other casting parts according to customers' requirements as a professional supplier. All of its technical specifications meet the oil and gas industry standard SY/T5029-2003 and the American Petroleum Institution API SPEC 1B standard. It adopts precision casting,normalized thermal treatment and fine process in production,and fully tested after finished production to make it function well in use
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