5CT 5-1/2 Inch Ltc K55 OCTG Casing Coupling for Oilfield

Name: 5CT 5-1/2 Inch Ltc K55 OCTG Casing Coupling for Oilfield
Brand: Tianjin Dongfanglong Petroleum Equipment Manufacture Co., Ltd.
SKU: 2176484762

Tianjin, ChinaTianjin Dongfanglong Petroleum Equipment Manufacture Co., Ltd.

US$55.00

100 Pieces

Product specifications

10-3//4

Sample price:US$75.00/piece.Request sample

Product profile

After-sales Service

Replacement Within Warranty

Warranty

Three Months

Certification

ISO 9001:2000, ISO 9001:2008

Power Source

Manual

Operation Pressure

High Pressure

Applicable Medium

Crude Oil

Structure

Coupling Type

Material

K55 Steel

Transport Package

Wooden Case

Specification

5-1/2 LTC K55 Coupling

Trademark

DFL

Origin

China

HS Code

7307210000

Production Capacity

5000000 Pieces/Year

Key features

API 5CT Certification: Obtained 000 5CT certificate authorized by American Petroleum Institute.

ISO Management Certified: Passed ISO9001, ISO14001, ISO45001, and HSE system certifications.

Custom Thread Options: Supports 000EUE, NU, LC, BTC, and premium thread options.

Corrosion Resistant Coating: Features green protective coating for enhanced field corrosion resistance.

High-Strength Material: Manufactured with K55 grade material for stable mechanical performance.

Special Clearance Design: Provides improved makeup performance and reduces installation friction.

Global Export Capability: Products exported to 31 countries including USA, Russia, and UAE.

OEM Service Available: Offers competitive pricing with custom engineering and OEM services.

Company profile

Tianjin Dongfanglong Petroleum Equipment Manufacture Co., Ltd.Tianjin, China

Business Type: Manufacturer/FactoryExport Year: 2019-06-07Nearest Port: TIANJIN PORT, QINGDAO PORT, SHANGHAI PORTAverage Response Time: ≤18hTerms of Payment: LC, T/T, PayPal, etc.International Commercial Terms(Incoterms): FOB, EXW, CIF, DDP

AI-Powered supplier vetting

SummaryTianjin Dongfanglong Petroleum Equipment Manufacture Co., Ltd. is a China-based manufacturer founded in 1999, focused on oil pipes, pipe fittings, drilling and production tools, and petroleum automation equipment. The supplier reports ISO 9001 and ISO 14001 certification, 10 production lines, 11–20 years of R&D engineer experience, and 11–20 quality-control staff. It states that its capabilities cover design, development, manufacturing, testing, experimentation, and full-cycle service, supported by more than 30 independent intellectual property rights and an intelligent workshop. The company exports to broad global markets and reports export activity since 2019, but the provided information does not identify specific customer cases or independently verify the stated capabilities.

Supplier typeThe supplier is explicitly identified as a Manufacturer/Factory and a limited company based in Tianjin, China. Its stated business focuses on petroleum equipment, oil pipes, pipe fittings, drilling and production tools, and automation equipment, matching the listed industrial product categories.

CertificationsThe supplier reports holding ISO 14001 and ISO 9001 management-system certifications. These are explicit certification records in the provided data, although certificate scope and validity dates are not given.

R&D capabilityThe supplier reports more than 30 independent intellectual property rights, an intelligent workshop, numerical-control automation equipment capabilities, an e-commerce platform, and recognition as a national science and technology-based small and medium-sized enterprise. These statements provide explicit evidence of innovation-related infrastructure and activity.

Production capacityThe supplier describes an integrated chain covering design, development, manufacturing, testing, and experimentation; operates 10 production lines; and has an intelligent workshop. It also reports oil equipment and pipe-related manufacturing experience, with stated order fulfillment within 15 workdays in both off-peak and peak seasons, supporting a positive production-capability assessment.

Customization capabilityThe stated full-cycle integration of design, development, manufacturing, testing, and experimentation, together with numerical-control automation equipment and an intelligent manufacturing model, indicates the ability to develop and manufacture tailored petroleum equipment. However, no specific customized project examples, engineering-change process, or minimum-order requirements are provided.