Non Welded Bow Spring Casing Centralizer

• Certification: ISO 9001:2000, ISO 9001:2008
• Surface Treatment: Plastic Painting
• Centralizer Type: Elastic
• Structure: Automatic Reversing
• Material: Cast Steel
• Type: Centralizer
• Model NO.: 4 1/2"-20"
• Spec: 4 1/2"-20"
• Sample: Available
• Markings: Available
• Drawings: Available
• Color: Red/Orange/Black
• Height: 300mm
• ODM: Acceptable
• Transport Package: Wood Cases
• Specification: 4 1/2"-20"
• Trademark: zhongshi
• Origin: China, Henan
• HS Code: 843143100
• Production Capacity: 10000PCS/Month

Product Description

                                                     Non Welded  Bow Spring Casing Centralizer

non-weld straights bow casing centralizer are the result of more than 30 years of field experience and laboratory testing, our newest design has features making them ideal for both tubing and casing applications:

The non-weld design eliminates any weak spots.
A choice of standard bow heights ensures optimum starting/restoring force criteria.
Special locking tabs hold the bows in the collars.
High-quality, spring-steel bows and specialy designed collar hinges provide reliable downhole performance.
Available in stainless steel. we supplies straight centralizers bows in several standard sizes and provides a variety of bow configurations for special applications.
Special sizes available upon request.
 
Centralizer Selection
To select the right product for your application, basic considerations need to be examined. 
To help you achieve the proper balance between starting force and restoring force, we offers centralizers with a wide range of bow 
heights and shapes. 
The starting force is the maximum force required to start a centralizer into previously run casing. It should be less than the weight of 40 feet (12.2 meters) of medium weight casing. 
The restoring force is the force exerted by a centralizer against the casing to keep it away from the bore hole wall. Minimum restoring force is given for a 67 % ratio of the bow standoff.



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