history of petroleum

...Petroleum Sulphur Pelletizer Resin Granulator Steel Belt With Uniform Shape Company Information Zhangjiagang Raidsant Machinery Co., Ltd. is majored in developing and manufacturing innovative powder cooling pelletizing machinery. With nearly 20 years' production history...

...petroleum equipment. The company is located in Xi'an city of China. And we have many years of history in the petroleum equipment industry. Our main products include drilling equipment, solid control equipment, oil production equipment, wellhead equipment,

...petroleum-based hydraulic oil and low-temperature petroleum-based hydraulic oil. The piston rod seal cannot be installed in the integral groove, and the sliding resistance is medium. Product Parameter: Products Name UNI Piston Rod Seal Material PUR U801+VMQ S813 Speed ≤1m/s Pressure ≤30MPa Temperature Range -45℃~+100℃ Factory History

...drilling speed of three cone drill bits, and is a major revolution in the development history of three cone drill bits. The embedded tricone bit is inexpensive and of reliable quality, making it essential for inspecting embedded tricone bits in petroleum