Oilfield Pipe Made Integral Bow Spring Centralizer

• Certification: ISO 9001:2000, ISO 9001:2008
• Surface Treatment: Spray-Paint
• Centralizer Type: Elastic
• Structure: Slider
• Material: Carbon Steel /Aluminium
• Type: Centralizer
• Model NO.: 4 1/2"-20"
• Sample: Available
• ODM: Acceptable
• Drawing: Available
• Spec: 3 1/2"-20"
• Color: Red/Orange/Black
• Height: 350mm
• Bows: 6PCS
• Markings: Available
• Coatings: Available
• Thickness: 4mm
• Transport Package: Wood Cases
• Specification: 3 1/2"-20"
• Trademark: zhongshi
• Origin: Henan, China
• HS Code: 843143100
• Production Capacity: 20000PCS/Month

Product Description

oilfield seamless pipe integral bow spring centralizer

Features
• Rating-API Specification 10D Standard
•Design features
- Smooth bow profile overall
-Non-welded
-Made to gauge
- Integral bow design for increased strength and performance
- Zero weak points, such as hinges, welds, or mechanical interlocks
- Flexible to absorb both axial and radial loading
- Powder coated red finish

Casing Centralizer Technical Parameters: 

No.	Type	Inside diameter (mm)	Height (mm)	Total height (mm)	Largest diameter (mm)
1	5"*12-1/4"	128-131	105	690	330
2	5"*20"	128-131	105	720	535
3	5-1/2"*7"	142-148	55	650	215
4	5-1/2"*8-1/2"	142-148	55	650	225
5	6"*8-1/2"	156-158	55	650	235
6	7"*8-1/2"	181-186	55	650	235
7	7"*9-5/8"	181-186	55	650	255
8	7-5/8"*9-5/8"	197-201	55	650	275
9	9-5/8"*12-1/4"	250-255	55	650	330
10	13-3/8"*17-1/2"	342-347	55	650	450
11	5-1/2"*8-1/2"	142-148	110	650	225
12	7"*9-5/8"	181-186	110	650	255
13	7"*8-1/2"	181-186	110	650	235
14	5"*6-1/2"	128-131	110	650	175
15	7-5/8"*9-1/2"	196-200	110	650	250
16	10-3/4"*12-1/4"	274-276	110	650	330
17	5"*6-1/4"	130-132	110	650	170
18	9-5/8"*12-1/4"	250-255	110	650	330
19	13-3/8"*17-1/2"	342-347	110	650	450
20	5-1/2"*8-1/2"	142-148	55	650	225

•Performance
- Zero start and running force with exceptional restoring force
- Improved flow by area and improved pipe rotation
- Low torque and low drag units
- Improved zonal isolation
•  Applications
- Used in most well applications and geometries for vertical, horizontal extended reach drilling, close tolerance, or underreamed well conditions
- Specialized in centralization for underreamed sections
•  Recommended to be run between limit clamps
•  Sizes available-4-1/2 to 20 in.; custom sizes availa
 






Heavy Duty Set Scre Stop Collars are made from seamless steel pipes, the gripping force is applied by one row of Set Screws. The outside ends of these collar are generally tapered to a degree which helps to hold the centralizer and avoid the ends to hit the Bows when the centralizers are placed over them. They are available in all sizes ranging from 3 1/2" to 20".



The Slip on Set Screw Stop Collar is a single piece collar and the gripping force is applied by one row of setscrew. It is used where high axial load tighten the collar to the casing tightly. They slid the casing pipe without any issue and it is quite easy to install.


 
 
These are most effective where low annual clearance is chanced upon. The stop collars come with a special Phosphate coating process that prevent it from getting rust and come in ranges 

 

The Hinged Spiral Nail Stop Collar comprises of two parts and hinged at two ends making an angle of 180 degree. 
>>This hinged Stop Collar has an internal groove and these are available in 4 1/2 " to 20 " sizes+ any sizes in which a spiral locking pin is inserted. 
>>This tightens the collar to the casing firmly.
>>It can be latched on the casing pipe without having to be slipped on. 
>>This cementing product is easy to install and most effective where annual low clearance received. 
>>The stop collars are coated with to polyester powder which prevents it from getting rust.



 
 
Property Parameters of stop collar
 

Specifications,mm	13 3/8″	10 3/4″	9 5/8″	8 1/8″	7 5/8″	7″	5 1/2″	5″	4 1/2″
ID,mm	338	272	245	206	193	177	139	126	114
OD,mm	350	284	257	218	285	189	151	138	126
Holding Force,KN	40	40	40	30	30	30	30	24	24