Product Name: Single Piece Centralizer Material: Stainless Steel Operation Pressure: Can Understand The Casing and Tubing Pressure Surface Treatment: Spray-Paint Manufacturing Process: Stamping Transport Package: Wood Package Specification: 7/8"-45" Origin: China HS Code: 7306290000 Product Description SPRING CentralizerHinged bow spring centralizer is a traditional processed and economic centralizer,this kind of centralizer is used in general vertical or slightly deviated wells.In the past,this kind of bow spring centralizer is with the highest restoring force and the lowest starting force,so they are wildey used in the drilling or cementing job.but now it is not the highest restoring force bow spring centralizer.lt is simple way to increase the restoring force according to bow height.