タイトルまたは説明

Super-strengthen spring steel is applied to centralize casing in wellbore, and improves cementing quality
1. Every attachment is pressed into shape by moulding instead of welding and rivet.
2. *-Section structure for easy transport.
3. Starting force and restoring force conform to API standards.
4. Easy-and-convenient to use.
5. Alternative turbulence plates can effectually improve displacement efficiency.