Bop, Mud Pump, Casing Centralizer manufacturer / supplier in China, offering Nace Mr0175 + API 16A RAM Blocks for Onshore BOPS - 4140 Alloy Steel with Chrome Carbide Coating (20K Cycles Fatigue Tested), Stock Ready: API 16A 10K Annular Bop 11" for Land Drilling Rigs, API 16A Certified 15K Annular Bop 13-5/8" for Onshore Drilling - H2s Resistant Seals with Nace Mr0175 Compliance (RAM Quick-Change Design) and so on.
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