• Model NO.：One Piece Centralizer
• Collar Type：Slip on
• Brand：Zhongshi
• Type：Bow Centralizer
• Transport Package：Standard Export Package
• Specification：Refer the parameters form, API 10d
• Trademark：Zhongshi Group
• Origin：Puayng China
• HS Code：7302
• Production Capacity：5000-8000PCS,Month

Basic Info.

Model NO. One Piece Centralizer Collar Type Slip on Brand Zhongshi Type Bow Centralizer Transport Package Standard Export Package Specification Refer the parameters form, API 10d Trademark Zhongshi Group Origin Puayng China HS Code 7302 Production Capacity 5000-8000PCS/Month

Product Description

API Oil Well Centralizer For Drilling

Character:
1. It's finished well under mould pressing without any welding.
2. Starting and restoring force meets API 10D standards.
3. Easy and convenient to install.
4. Equipped with spinning disc to improve the displacement efficient.

Product Advantage:
1. API single piece casing centralizer performs satisfactorily in open hole as well as cased hole.
2. These high quanlity product,developed to meet and exceed API 10D specifications for use in highly demanding downhole conditions.
3. Single piece casing centralizer combines the highest restoring force with zero start force and zero running force.
4. The bow spring casing centralizer is used to position the casing in the center of the wellbore in vertical deviated and horizontal wells.
5. The single piece centralizers reduce the effect of channelling by improving the cement flow,the results in more uniform cement thickness in the well bore.
6. By reducing the pipe movement before cement sets in.The single piece casing centralizers are able to minimize gas channelling.
7. The single piece centralizers are one piece construction in special high strength steel which imparts excellent hardness and spring action ensuring an unmatched ability to come back to its original shape after undergoing rigorous stress loads conditions.
8. The single piece casing centralizers are available in size 4-1/2" to 20".
9. Any special sizes or combination can be available on requirment.
10. This centralizer undergoes a special Iron Phosphate coating process to prevent it from rust and coated with special Polyester
Powder. 
11. It is shipped in assembled condition only. 
12. When shipping them,in order to save space and shipment charges for customers,we usually put the smaller size centralizer into bigger size centralizer.

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

Established in 1997, Puyang Zhongshi Group Co., ltd is a restructured enterprise of SINOPEC. We have 10 years export experiences and 9 factories with annual output value of $80 million. Our customers are from America, Central Asia, Southeast Asia, Africa, Middle East, etc. We have the certificates of API 5CT, API 10D, API 11E, API 6A, API 11AX, ISO 9001 and ISO 14001.