• Model NO.：API
• Product Name：Roller Centralizer
• Sample：Provide
• Payment：T,T or L,C
• Delivery：Promptly
• Application：Oilfield
• Transport Package：Wooden Case
• Specification：API Solid Rigid Centralizer Standard
• Trademark：zhongshi
• Origin：China
• HS Code：0
• Production Capacity：5000 Sets,Month

Basic Info.

Model NO. API Product Name Roller Centralizer Sample Provide Payment T/T or L/C Delivery Promptly Application Oilfield Transport Package Wooden Case Specification API Solid Rigid Centralizer Standard Trademark zhongshi Origin China HS Code 0 Production Capacity 5000 Sets/Month

Product Description

composite Rigid Centralizers specification:

Model	Max OD(mm)	ID(mm)	Length(mm)
4-1/2"× 6"	145	116.5	200
5"×  6"	145	129	200
5-1/2"×  8-1/2"	205-210	142	200/300
6-5/8"×  8-1/2"	205-210	171	200/300
7"×  8-1/2"	205-210	181	200/300
7"×  9-1/2"	225-235	181	200/300
7"×  9-5/8"	225-235	181	200/300
9-5/8"×  12-1/4"	300-305	248	200
13-3/8"×  17-1/2"	430-435	346	200

 composite Nylon Rigid Centralizers Features:
1. Composite nylon rigid centralizers is designed to reduce drag and friction down hole it have lower friction factors, ultimate drag and rotational torque reduction, increased abrasion resistance for maximum stand-off. 
2. Vanes are designed to enhance hole cleaning using maximized flow-by area. 
3. They are design to provide optimum flow and its fins or blades overlap the entire 360-degree open hole circumference.
4. Therefore it reduces flow area between the spiral vane and creates vortex motion to increase fluid velocity with direction. 
5. Extra length of fins gives maximum centralization, high stand off and increase annular turbulence. 
6. Even without rotation, the relived angle fins/ blades induce turbulent flow for improved cutting and filter cake removal. 
7. Composite nylon rigid centralizers withstands high well bore temperature up to 200 degree Celsius while providing maximum horizontal stand off. 
8. Composite nylon rigid centralizers are well head friendly and have high impact with shock resistance, and Shock proof along with optimum tensile and yield strength. 
9. Composite nylon rigid centralizers are constructed of one-piece in superior quality polymer. 
10. Composite nylon rigid centralizers are available in standard length only. The composite nylon rigid centralizers has surface finishing on CNC Lathe, and then rigid inspection makes a quality product. 
11. Composite nylon rigid centralizers are available in all sizes ranging from 4 1/2" to 20" for any hole combination.
12. Any special sizes are available on request.
 





Our Services
Our products and services are closely related to oil drilling and oil well cementation. Our products include integral casing centralizer, welded casing centralizer, bow spring centralizer, float shoe, float collar, Suck Rod Pump, api pumping unit, Thread Protector, Thread Gauge, Api Valve Ball and Valve Seat, coupling and pump plungers.


Packing and Shipping
Wooden case, standard export packaging, firm enough for long distance sea-shipped, air transportation and even railway transportation.









company information
Restructured from SINOPEC in 1997, Puyang Zhongshi Group Co., Ltd has 20 years manufacturing experience of petroleum machinery products till now, we have competitive prices of our main products of casing accessories like bow spring centralizer, solid rigid centralizer,float equipment, cementing plug ,sucker rod pump ,pumping unit etc.
We have 9 factories, more than 500 employees, and many kinds of production equipments.
We have certificates of API 5CT,6A,10D,11AX,11E, ISO 14001 and 9001.
With 10 years exporting experience,we have exported to more than 30 countries such as America,Canada,Russia,Venezuela,Columbia,Thailand,Indonesia ,UAE,Saudi Arabia,Kazakhstan etc.