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Sucker Rod Coupling Polished Rod Coupling American 11b Class T and Class Sm
US$2.00-10.00
1 Piece
Sample price:US$5.00/joint.Request sample
Product profile
Customization
AvailableAfter-sales Service
7X24Warranty
12monthsModel NO.
API 11BManufacturing Process
ForgingSurface Treatment
PolishingOperation Pressure
NoMaterial
AlloyDelivey
10daysTransport Package
Stand Export PackageSpecification
5/8", 3/4", 7/8", 1", 1-1/8"Trademark
LFMOrigin
ChinaProduction Capacity
100000Key features
API 11B Compliance: Manufactured according to API Specification 11B with dimensions and tolerances matching or exceeding standards.
Cold Formed Threads: Uses cold rolled threads to create compressive stress, providing maximum strength at the thread root.
Hydrogen Embrittlement Resistance: Made from 5140 alloy steel, offering high resistance to hydrogen embrittlement for both Grade T and SM.
Advanced Thermal Spraying: Coated with Ni alloy and high wear-resisting materials to reduce friction coefficient to 0.01.
Customizable Surface Treatment: Surface treatment options include black coating, phosphating, or as per customer requirements.
24/7 After-Sales Support: Provides round-the-clock technical assistance and support for all product inquiries.
12-Month Warranty: Comes with a standard 12-month warranty period covering manufacturing defects.
Multiple Size Options: Available in full size, slim hole, over size, and combination sub-couplings for various diameters.
Company profile

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2021-08-17Nearest Port: Tianjin, Shanghai, QingdaoAverage Response Time: ≤6.87hTerms 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.
Product Q&A
Q:What is the packing method?
A:
Regular packing.
Q:What is the delivery time?
A:
Normally, about 30-45 days.
Q:What are the shipping methods?
A:
Ocean shipment to the port near you; Air shipment to the shipment near your company; Door to door service by international express.
Q:What payment options do you accept?
A:
In general, we accept T/T.
Q:When can I get the price?
A:
We usually quote within 24 hours after we get your inquiry. If you are very urgent to get the price, please call us or tell us in your email so that we will detail with your inquiry priority.
Send Inquiry
*To:
Shandong Light Fir Machinery Equipment Co., Ltd.
Shandong Light Fir Machinery Equipment Co., Ltd.*Content:
Supplier replies will be sent to your registered email
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