Zhongshi Roller Centralizer GF-4 1/2"*6" Spiral Rolling Centralizer

• Certification: ISO 9001:2008, API
• Surface Treatment: Spray-Paint
• Centralizer Type: Rigid
• Structure: Roller
• Material: Cast Steel
• Type: Centralizer
• Model NO.: GF roller centralizer
• OEM: Avaliable
• Sample: Avaliable
• Vane: Stright Vane/ Spiral Vane/
• Centralizers Type: Roller Rigid Centralizers
• Transport Package: Wooden Case
• Specification: 4-1/2inch to 20inch, custom size avaliable
• Trademark: ZS
• Origin: Henan
• Production Capacity: 50000 Piece/Pieces Per Month

Product Description

Zhongshi Roller Centralizer GF-4 1/2"*6" Spiral Rolling Centralizer
Available in sizes 4-1/2" to 20"

Features of GF Roller Centralizer 
- Straight Vane Roller Casing Rigid Centralizer consists of rigid body, on which machined spiral blades. 
- There are modified alloy steel, fully heat treated rollers fixed on every spiral blades.  
- Roller/Wheeled centralizers are mainly used for big high Roller, high deviated wells and horizontal wells, to centre casings. 
- Roller Casing Rigid Centralizers provide superior wear resistance .
- Axles are crimped in place, eliminating the welding process, while ensuring the rollers cannot break free and fall into the wellbore. 
- The system's high-quality construction materials improve high-pressure/high-temperature capabilities.
 
Parameter of GF Roller Centralizer 

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

Note: ZSGF series rigid casing centralizer, classified as straight strip type( type I), spiral (type II), roller type (type III)