API Spec 7-1 Oil/Gas/Water Drilling Drill Collar Lifting Sub 2 7/8"- Nc23 AISI 4145h
Hebei Shitan Machinery Manufacturing Co., Ltd.Base Info
- Model NO.：O. D 2 7,8"- NC23
- 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 2 7,8"- NC23
- Origin：China
- HS Code：8431431000
Description