What materials are used for Class T and SM couplings?

Class T uses AISI 5140, while Class SM uses spray metal coating on base metal.

How many times can couplings be reused?

We recommend changing couplings after three make-ups if threads are acceptable.

What surface treatments are available?

Options include black coating, phosphating, or spray metal as per customer requirement.

API 11b Sucker Rod Coupling T Sm Class Petroleum Equipment

Name: API 11b Sucker Rod Coupling T Sm Class Petroleum Equipment
Brand: Dongying Kenli Jinxiu Petroleum Machinery Co., Ltd
SKU: 1990279052

Shandong, ChinaDongying Kenli Jinxiu Petroleum Machinery Co., Ltd

US$1.50-3.00

1 Piece

Product profile

Customization

Available

After-sales Service

Online Service

Warranty

12 Months

Model NO.

All Models

Manufacturing Process

Forging

Surface Treatment

Spray-Paint

Operation Pressure

Atmospheric Pressure

Material

AISI 4130 4140 4330

Features

Sm T

Material Type

40cr AISI 4130

Type

Slim Hole and Full Size

Length

102 mm

Transport Package

Standard Export Package

Specification

5/8" ~ 1-1/2"

Trademark

JX PETRO

Origin

China

HS Code

84314310

Production Capacity

10000 Piece/Pieces Per Month

Key features

API 11B Compliant Manufacturing: Class T and SM couplings manufactured strictly per API Specification 11B standards.

Cold Form Rolled Threads: Thread rolling creates compressive stress for maximum strength at the root.

Customizable Surface Treatment: Options include phosphate chemical treatment, black oxide, or spray metal coating.

Multiple Size Variants: Available in full size, slim hole, over size, and combination sub-couplings.

High Wear Resistance: Designed with increased wear and corrosion resistance for harsh environments.

Diverse Material Options: Constructed from AISI 4130, 4140, 4330, or AISI 5140 steel grades.

12 Months Warranty: Comprehensive 12-month warranty coverage for all mechanical equipment.

OEM and ODM Services: Full customization support for logo, color, and specific product features.

Company profile

Dongying Kenli Jinxiu Petroleum Machinery Co., Ltd

Shandong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service AvailableExport Year: 2022-09-05 CertifiedNearest Port: Qingdao PortAverage Response Time: ≤2.27h CertifiedTerms of Payment: LC, T/T, PayPal, etc.

AI-Powered supplier vetting

SummaryJX PETRO is a China-based factory and limited company founded in 2005, specializing in petroleum drilling and production equipment. The supplier reports API certification, ISO9001, ISO14001, and ISO45001 certifications, six production lines, professional processing and testing equipment, and a manufacturing facility of 11,000–18,000 square meters as reported in different slices. Its product range covers sucker rods, mud pumps, well control and wellhead equipment, downhole tools, handling tools, and rig accessories. The supplier has self-operated import and export rights, but exports reportedly account for only 1%–10% of sales and its primary market is domestic. Evidence supports manufacturing capability, certification, and some R&D activity, including six national patents. No sufficient evidence is provided regarding after-sales service systems, customization capability, or specific customer cases. Financial assessment is limited because financial figures are excluded.

Supplier typeThe supplier is explicitly identified as a factory and as a limited company engaged in manufacturing and supplying petroleum drilling and production equipment. Its stated establishment year is 2005, and its operations are located in Shandong, China.

CertificationsThe supplier states that it holds API certification and ISO9001:2015, ISO14001:2015, and ISO45001:2016 certifications covering quality, environmental, and occupational health and safety management. These certifications provide explicit evidence of formal management-system and product-certification coverage.

R&D capabilityThe supplier reports investment in production technology R&D and talent development, 15 professional and technical personnel, three years of R&D engineer experience, and six national patents. These statements explicitly support the existence of R&D and patent activity, although the scope and commercial impact of the innovations are not detailed.

Production capacityProduction capability is supported by six production lines, 26 large-scale processing machines, more than 20 testing devices, and a reported manufacturing area of 11,000 square meters in one slice and 18,000 square meters in another. The supplier also reports 50 production workers in its company description, while another slice lists 35 total employees, indicating inconsistent workforce data that should be verified.