What is the surface treatment?

The centralizers feature a powder-coated red finish, and stop collars use a special phosphate coating to prevent rust.

What certifications does the product have?

The product complies with API Specification 10D and the manufacturer holds ISO 9001:2000 and ISO 9001:2008 certifications.

How is the gripping force applied on stop collars?

Gripping force is applied by one row of set screws, and some models use a spiral locking pin for firm tightening.

Oilfield Pipe Made Integral Bow Spring Centralizer

Name: Oilfield Pipe Made Integral Bow Spring Centralizer
Brand: Puyang Zhongshi Group Co., Ltd.
SKU: 680811801

Henan, ChinaPuyang Zhongshi Group Co., Ltd.

US$40.00

1-499 Pieces

US$39.00

500-999 Pieces

US$38.00

1,000-2,999 Pieces

US$37.00

3,000-4,999 Pieces

US$36.00

5,000+ Pieces

Sample price:US$40.00/piece.Request sample

Product profile

Customization

Available

Certification

ISO 9001:2000, ISO 9001:2008

Surface Treatment

Spray-Paint

Model NO.

4 1/2"-20"

Centralizer Type

Elastic

Structure

Slider

Material

Carbon Steel /Aluminium

Type

Centralizer

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

Key features

API 10D Compliance: Meets API Specification 10D standard for oilfield seamless pipe integral bow spring centralizers.

Integral Bow Design: Non-welded structure with zero weak points like hinges or mechanical interlocks for increased strength.

Customizable Sizes: Available in sizes from 3 1/2 inches to 20 inches, with custom sizes available upon request.

Durable Coating: Powder coated red finish and phosphate coating process prevent rust and ensure longevity.

High Load Capacity: Flexible design absorbs both axial and radial loading with exceptional restoring force.

Versatile Applications: Suitable for vertical, horizontal, extended reach drilling, and underreamed well conditions.

OEM & ODM Support: Acceptable for OEM and ODM services with available drawings and samples.

ISO Certified: Manufactured under ISO 9001:2000 and ISO 9001:2008 quality management systems.

Company profile

Puyang Zhongshi Group Co., Ltd.

Henan, China

CertifiedBusiness Type: Manufacturer/Factory CertifiedR&D Capacity: ODM Service Available & OEM Service AvailableExport Year: 2016-09-22 CertifiedNearest Port: Qingdao PortAverage Response Time: ≤15h CertifiedTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryPuyang Zhongshi Group Co., Ltd. is identified as a Chinese manufacturer established in 1997, focused on casing cementing equipment, float equipment, centralizers, and cementing plugs. The supplier reports a 52,000 m² plant, 10 production lines, annual casing-centralizer output of 200,000 pieces, and exports to multiple global regions. ISO 9001:2015, ISO 14001:2015, and ISO 45001:2016 are stated, while other company information references API certifications. Trade records show shipments associated with buyers in India, Brazil, and Peru, but the records are recent and limited. Evidence supports established manufacturing and export capability; after-sales service, financial credibility, and customization capability remain insufficiently documented.

Supplier typeThe supplier is explicitly classified as a manufacturer and describes itself as producing casing cementing equipment and related oilfield products. It is based in Puyang, Henan, China, and reports that it was established in 1997.

CertificationsThe supplier reports ISO 9001:2015, ISO 14001:2015, and ISO 45001:2016 management-system certificates. It also states that it holds API 5CT, API 6A, API 11AX, and API 11E certificates, although the provided information does not include certificate validity or scope details.

Production capacityProduction capability is supported by a reported 52,000 m² plant, 10 production lines, 9 factories, more than 500 employees, and annual casing-centralizer output of 200,000 pieces. The supplier also states that it can serve broad international markets, with typical lead times of 2–3 months in both peak and off-peak periods.

Client casesThe supplier is associated with buyers or shipments involving VNK Solutions, Smart Welding de Macae Servicos Ltda, and a Peru-related transaction, while also stating exports to more than 30 countries. The evidence indicates international customer exposure, but provides limited detail on completed projects, customer satisfaction, order scale, or repeat business.