![](/uploads/image/2021/06/52/bc/35/537b633995340f9ccb243499bc73a16c.jpg)
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