Introduction
Manager's Speech
Corporate Culture
Development
Honors
Media Center
Ground Equipment
Downhole Tools
Protector
Drilling Series
Parts
Application Area
Solution
Cases
After-sale Service
Technical Support
Video
Industry Trends
Company News
Talent Concept
Recruitment
Working pressure: 25-70Mpa
Temperature level: -29 ～ 121 ℃, P/U
Material grade: AA, BB, CC, DD, EE, FF
