By Sep 18,2023, the future price of light crude oil from New York Mercantile Exchange closed at USD 90.48 a barrel. increase USD3.58 than Sep 11.2023, The rise rate is 4.12 %. The future price of crude oil from London Brent closed at USD94.36 a barrel, increase USD4.04 than Sep 11.2023.the rise rate

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

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 stee