What grades of couplings are available?

Two grades are available: Class T and Class SM (CO-HARD).

What is the manufacturing process?

The process involves cold worked pre-stressed, roll-formed threads with anti-galling coating and advanced thermal spraying technology.

API 11b 7/8" Sh Sm Sucker Rod Coupling Sucker Rod Couplings Class C

Name: API 11b 7/8" Sh Sm Sucker Rod Coupling Sucker Rod Couplings Class C
Brand: Shandong Light Fir Machinery Equipment Co., Ltd.
SKU: 2061901385

Shandong, ChinaShandong Light Fir Machinery Equipment Co., Ltd.

US$2.00-10.00

1 Piece

Sample price:US$5.00/joint.Request sample

Product profile

Customization

Available

After-sales Service

7X24

Warranty

12months

Model NO.

API 11B

Manufacturing Process

Forging

Surface Treatment

Polishing

Operation Pressure

Material

Alloy

Delivey

10days

Transport Package

Stand Export Package

Specification

5/8", 3/4", 7/8", 1", 1-1/8"

Trademark

LFM

Origin

China

Production Capacity

100000

Key features

API 11B Compliance: Manufactured strictly according to API Specification 11B standards for quality assurance.

High Strength Threads: Cold form rolled threads provide compressive stress for maximum strength and fatigue resistance.

Corrosion Resistance: Made from 5140 alloy steel, highly resistant to hydrogen embrittlement and corrosion.

Advanced Coating: Thermal spraying technology reduces friction coefficient to 0.01, extending service life.

Custom Surface Treatment: Surface treatment includes black coating, phosphating, or as per customer requirements.

24/7 After-Sales Support: Round-the-clock technical support available for all inquiries and issues.

Company profile

Shandong Light Fir Machinery Equipment Co., Ltd.

Shandong, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2021-08-17Nearest Port: Tianjin, Shanghai, QingdaoAverage Response Time: ≤8.13hTerms of Payment: LC, T/TInternational Commercial Terms(Incoterms): FOB, EXW, CFR, CIF, DAT, DAP, CIP, CPT, Others, FCA

AI-Powered supplier vetting

SummaryShandong Light Fir Machinery Equipment Co., Ltd. is a China-based limited company described as both a trading company and manufacturer/factory, offering oilfield and drilling-related equipment. It holds an ISO 9001 management-system certification and reports a valid import/export license. The supplier provides customization from samples and designs and has provided OEM services for well-known brands, but reports no ODM service and no new products in the past year. Production is supported by two production lines, while reported R&D-engineer and quality-control staffing are each below five. Service infrastructure is limited: there are no overseas warehouses, showrooms, agents, branches, or offline trade-show participation. Written procedures or records for service assessment, corrective/preventive action, and complaint handling were not provided. Financial records are identified by year, but no performance values are supplied, so financial credibility cannot be assessed.

CertificationsThe supplier reports holding ISO 9001 certification. This is explicit evidence of a quality-management-system certification, although no additional certification details are provided.

After-Sales capabilityThe supplier has no written procedures or records for service-capability assessment, corrective and preventive actions, or effective complaint handling. It also reports no overseas warehouse, showroom, agent, branch, or offline trade-show experience, although it lists 15 qualified service-capability suppliers and offers a one-month average lead time.

R&D capabilityThe supplier reports no available SDK, no new products during the past year, and no ODM service. Its R&D engineer experience is below five years, which provides no evidence of strong innovation performance; however, it does provide customization from samples and designs.

Production capacityThe supplier identifies itself as a manufacturer/factory, operates two production lines, and offers a broad range of artificial-lift, wellhead, well-control, valve, cementing, drilling, and solid-control equipment. Quality-control staffing is below five, so production scope is documented but operational scale and capacity remain limited or unverified.

Customization capabilityThe supplier explicitly provides customization from samples and from customer designs, and lists customized products among its main offerings. It also reports OEM service for well-known brands, while not offering ODM service.