
API Bow Spring Slip on Welded Casing Centralizer
Puyang Zhongshi Group Co., Ltd.- Certification:ISO 9001:2008, API
- Surface Treatment:Spray-Paint
- Centralizer Type:Elastic
- Structure:Automatic Reversing
- Material:Carbon Steel and 65mn
- Type:Centralizer
Base Info
- Model NO.:welded Bow Spring Casing Centralizer
- Size Range:4 1,2′′---20′′
- Standard:API
- Process:Welded
- Use:Well Cementing
- Transport Package:Plywood Case
- Specification:API, ISO
- Trademark:Zhongshi
- Origin:China
- HS Code:73079900
- Production Capacity:10000piece,Month
Description
Basic Info.
Model NO. welded Bow Spring Casing Centralizer Size Range 4 1/2′′---20′′ Standard API Process Welded Use Well Cementing Transport Package Plywood Case Specification API, ISO Trademark Zhongshi Origin China HS Code 73079900 Production Capacity 10000piece/MonthProduct Description
Product DescriptionAPI Bow Spring Slip on Welded Casing Centralizer
1) Material: Carbon Steel for collar; 65Mn for bow
2) Type: welded casing centralizer
3) Standard: API
4) API and ISO certified
5) Specifications: 4 1/2''---20''. More special sizes or combination are available as requested.
6) Photo

7) Application
Bow spring casing centralizer is to help center the casing in the wellbore, allowing even distribution of the cement around te casing during cementing operations.
8) Function
a. Take casing to designed position by reducing sticking while casing going down.
b. Centralize casing in well.
c. Balance liquid pressure in annular space by reducing adhesion phenomenon.
d. Improving replacing ratio of mud and boosting cementing quality by reducing channeling effect.
e. Reset force of double-bow casing centralizer is higher than sigle-bow casing centralizer's, and centralization performance is stronger.
9) Features:
a. Designed for high restoring force and low starting&running force
b. Undergo special coating process to prevent from rust
10) Parameter
Model (in) | Hooping In-Dia. (mm) | Hooping thickness(mm | Total length (mm) | Max.Out-Di (mm) | Amount of spring(mm) |
5-1/2" x 8-1/2" | 142-148 | 3-5 | 650±50 | 225±5 | 5 |
7" x 9-5/8" | 181-186 | 3-5 | 650±50 | 255±5 | 6 |
7" x 8-1/2" | 181-186 | 3-5 | 650±50 | 235±5 | 6 |
8-5/8 x 12-1/4" | 223-228 | 3-5 | 650±50 | 330±5 | 8 |
9-5/8 x 12-1/4" | 250-255 | 3-5 | 650±50 | 330±5 | 8 |
10-3/4 x 12-1/4" | 274-276 | 3-5 | 650±50 | 330±5 | 9 |
13-3/8"x17-1/2" | 342-347 | 3-5 | 650±50 | 450±5 | 11 |
18-5/8"x24" | 475-477 | 3-5 | 600±50 | 610±5 | 12 |
20"x26" | 509-511 | 3-5 | 600±50 | 660±5 | 12 |
Certificate:

Package:

Company Information
Puyang Zhongshi Group Co., Ltd is a professional manufacturer of various oilfield equipments and cementing accessories since 1997, restructured enterprise of SINOPEC.
We have the certificates of API 5CT, API 11E, API 6A, API 11AX, ISO 9001 and ISO 14001, etc..
Our products mainly include:
1. Casing Centralizer
2. Float Collar & Float Shoe
3. Cementing Plug
4. Cementing Head
5. Cement Basket
6. Tubing Pump / Rod Pump
7. Valve Ball & seat
8. Casing / Tubing Pipe and Coupling
9. Stage Collar
10. Pumping Unit
11. Sucker Rod
Our group have more than 10 years export experience and 9 subsidiary factories, more than 500 employees. We are the first-class supplier of resources market of SINOPEC and CNPC. Our foreign customers are mainly from America, Central Asia, Russia, Southeast Asia, Middle East, etc.
Contact Us
PUYANG ZHONGSHI GROUP CO.,LTD
Add: 5th community, Zhongyuan Oilfield, Puyang, China
Website: zschinajixie.en.made-in-china.com;
zschinajixie.en.made-in-china.com;
zschinajixie.en.made-in-china.com
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