Shengli Oilfield Freet Petroleum Equipment Co., Ltd., a subsidiary co***ny of SINOPEC originally, established in 1964, is a large and comprehensive enterprise engaging in manufacture of petroleum equipment. Our main products with API authentication: ERW pipe, steel pipe, pumping unit, tubing, sucker rod, and casing. For more information, please check our website www.slfrt.com. ERW pipe: ERW casing size: OD 4-1/2", 5-1/2", 7", 9-5/8", 10-3/4", 13-3/8" Steel grade: J55, K55, N80, P110 Stru...
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