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Product profile
Customization
AvailableAfter-sales Service
YesWarranty
1 YearModel NO.
3/4" 7/8" 1"Manufacturing Process
CNC MillingSurface Treatment
GalvanizedMaterial
AlloyProduct Name
Sucker Rod CouplingSize
3/4" 7/8" 1"Transport Package
Wooden CaseSpecification
5/8", 3/4", 7/8", 1", 1-1/8"Trademark
ZXOrigin
ChinaKey features
Cold Form Rolled Threads: Uses cold form rolling to create compressive stress for maximum thread strength.
High-Strength Material: Class T coupling manufactured using AISI 5140 steel for superior durability.
Customizable Surface Treatment: Coated with phosphate chemical treatment or black oxide upon customer request.
Specialized Hardening Process: Class SM coupling features spray metal specification hardening on base metal.
Multiple Size Options: Available in full size, slim hole, over size, and combination sub-couplings.
Compliance with Standards: Manufactured strictly according to Specification 11B for Class T and SM couplings.
1-Year Warranty Coverage: Provides a comprehensive 1-year warranty for peace of mind and quality assurance.
OEM/ODM Support: Offers OEM and ODM services with available R&D engineers for custom needs.
Company profile

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service AvailableExport Year: 2014-04-14 CertifiedNearest Port: Qingdao PortAverage Response Time: ≤11.71h CertifiedTerms of Payment: LC, T/T
AI-Powered supplier vetting
SummaryDongying Zhaoxin Industry and Trade Co., Ltd. is a China-based limited company in Shandong that manufactures and processes oilfield tools and equipment. The supplier reports ISO9001:2015, ISO14001:2015, and ISO45001:2016 certifications, a dedicated R&D team, more than 40 national patents, six to ten quality-control staff, and two production lines. It offers downhole tools, cementing tools, wellhead equipment, oil-well packers, tubing anchors, and torque anchors. The company states that it provides research, development, manufacturing, sales, and after-sales service. Export activity is documented since 2014, with markets in South America and Europe, although export sales represent only 11%–20% of total sales. Evidence is insufficient to assess financial credibility, customization capability, or specific customer cases.
Supplier typeThe supplier is a Chinese limited company engaged in manufacturing and processing machinery, specifically oilfield tools and equipment. Its stated activities cover research, development, manufacturing, sales, and after-sales service, indicating a manufacturer rather than only a trading intermediary.
CertificationsThe supplier explicitly reports ISO9000 international quality-system certification and current ISO9001:2015, ISO14001:2015, and ISO45001:2016 certificates. These certifications provide direct evidence of formal quality, environmental, and occupational-health-and-safety management systems.
After-Sales capabilityThe company explicitly states that its business includes sales and after-sales service for oilfield tools and equipment. However, the slices do not describe service coverage, staffing, response times, spare parts, or warranty terms.
R&D capabilityThe supplier reports a practical and experienced R&D team, more than 40 national patents, five years of R&D-engineer experience, and a stated focus on new products and technology. These claims directly support an established innovation function, although no patent titles or technical performance data are provided.
Production capacityThe supplier operates a manufacturing plant of 11,000 square meters, two production lines, and reports one-month order fulfillment in both off-peak and peak seasons. Its listed product scope covers multiple oilfield equipment categories, supporting production capability, although detailed capacity and equipment information is unavailable.
Product Q&A
Q:What manufacturing process is used for the threads?
A:
We use cold form rolling by displacing material rather than removing it, which creates compressive stress for maximum strength.
Q:What material is used for Class T couplings?
A:
Class T couplings are manufactured using AISI 5140 steel.
Q:What surface treatment options are available?
A:
Customers can request phosphate chemical treatment or black oxide coating.
Q:What is the warranty period for this product?
A:
We provide a 1-year warranty for our sucker rod couplings.
Q:Are different sizes and types available?
A:
Yes, we offer full size, slim hole, over size, and combination sub-couplings for various diameters.
Send Inquiry
*To:
Dongying Zhaoxin Industry and Trade Co, Ltd.
Dongying Zhaoxin Industry and Trade Co, Ltd.*Content:
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