AISI 4145h Water Well Drilling Drill Collar 177.8mm-Nc50 with API Spec 7-1/7-2
Hebei Shitan Machinery Manufacturing Co., Ltd.Base Info
- Model NO.：O. D. 177.8mm-NC50
- Manufacturing Process：Forging and Integral Heat Treatment
- Surface Treatment：Spray-Paint
- Operation Pressure：Atmospheric Pressure
- Material：Structural Alloy Steel 4145h
- Trademark：Shitan
- Specification：O. D. 177.8mm-NC50
- Origin：China
- HS Code：8431431000
Description