By June 13, the future price of light crude oil from New York Mercantile Exchange closed at USD118.81 a barrel, droped by Approx.0.63 % from June 6.2022, The future price of crude oil from London Brent closed at $120.48 a barrel, droped by approx. 0.28% from June 6.2022.
1. Introduction of polished rod clampsThe polished rod clamps are used to connect the polished rod and pump unite. 2. Material1. Chemical CompositionTo meet the requirements of this specification, polished rod manufactured from any AISI or equivalent specification recommended cast iron or carbon ste