• Model NO.：4 1,2"-20"
• Sample：Available
• Color：Blue
• ODM：Available
• OEM：Available
• Height：as Request
• Standard：API 10d
• Markings：Available
• Drawings：Available
• Bows：6PCS
• Transport Package：Wood Cases
• Specification：4 1,2"-20"
• Trademark：zs
• Origin：China
• HS Code：843143100
• Production Capacity：10000PCS,Month

SpecificationIn-Dia(mm)Wall
Thickness
(mm)Height(mm)Total height(mm)Largest Dia(mm)Spring Number5-1/2"*8-1/2"142-1483-55565022557"*9-5/8"181-1863-55565025567"*8-1/2"181-1863-55565023568-5/8"*12-1/4"223-2283-55565033089-5/8"*12-1/4"250-2553-555650330810-3/4"*12-1/4"274-2763-555650330913-3/8"*17-1/2"342-3473-5556504501118-5/8"*244763-5556006101220"*265103-55560066012
Fuction of casing flexible Casing centralizer:

1. Take casing to designed position by reducing sticking while casing going down.
2. Centralize casing in well.
3. Balance liquid pressure in annular space by reducing adhesion phenomenon.
4. Improving replacing ratio of mud and boosting cementing quality by reducing channeling effect.






Bow spring centralizer
     1. These Centralizers are designed for High Restoring Force and Low Starting Force for centralizing the casing pipe in a Vertical, Horizontal and Deviated well
    2. Premium quality Bows are made of special alloy steel and hot formed in totally controlled heat treatment plant to achieve the uniform hardness all over

    3. Spec and performance index of bow spring casing centralizer meet API Spec 10D. The woven centralizer is connected by pin when in use, the unfolded centralizer can be stacked flatly for convenient storage and transportation.


This integral one-piece bow spring centralizer is a high-end centralization product. The 
centralizers are built to gauge to offer easier, RIH, maximize standoff, and maximize the cement job. The UROS range of centralizers are built mostly for passing through close tolerance situations and then opening back up into under reamed holed sections, or washed out  sections, while still providing quality stand-off  performance. Bow spring sections are based on a straight bladed principle, but are curved in both axial and tangential directions. This cross curvature conforms to the borehole wall, while the axial curvature changes proportionally as it encounters different loads. As the loads increase, the surface contact area also increases, reducing the load per square unit of area. This helps avoid compression and shear failure of the formation surface.