What is the average lead time?

Peak Season Lead Time: within 15 workdays; Off Season Lead Time: within 15 workdays.

What are the accepted payment terms?

LC, T/T, PayPal, Western Union.

Drill Pipe Coupling Oil and Gas Drilling Customized Drill Pipe Coupling

Name: Drill Pipe Coupling Oil and Gas Drilling Customized Drill Pipe Coupling
Brand: Tianjin Dongfanglong Petroleum Equipment Manufacture Co., Ltd.
SKU: 2117800402

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

US$6.00

10-99 Pieces

US$5.90

100+ Pieces

Sample price:US$7.00/piece.Request sample

Product profile

Products Name

Drill Pipe Coupling Oil and Gas Drilling Customize

Used for

Oil Drilling and Production

Materidl

Carbon Steel Pipes

Model NO.

2-1/2"

Size

2-1/2"

Stock

200

MOQ

Transport Package

Wooden Case

Specification

2-1/2"

Trademark

EASTLONG

Origin

Henan, China

HS Code

7307990000

Production Capacity

50000/Year

Key features

API Standard Threads: Features trapezoidal threads like NC50 for strong self-locking and anti-loosening performance.

High-Strength Material: Constructed from 42CrMo or AISI 4145H alloy steel with HRC28-32 hardness.

Deep Well Capability: Maintains tightness and stability for ultra-deep wells exceeding 8000 meters.

Low Temperature Ductility: Remains ductile and functional in polar drilling environments down to -50 degrees Celsius.

Customized Packaging: Offers free wooden crates or custom packaging tailored to customer requirements and regions.

Certified Manufacturer: Over 20 years of history with API and ISO certifications held for more than 17 years.

Precision Manufacturing: Equipped with 42 precision CNC lathes and advanced automated cutting machinery.

Quality Control Team: Includes 16 dedicated quality inspectors and senior engineers ensuring strict process compliance.

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: ≤15hTerms 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.

Product Q&A

Q:Who are we?

We are based in Tianjin, China, start from 1999, sell to North America, Mid East, South Asia, Eastern Europe, South America, Southeast Asia. There are total about 101-200 people in our office.

Q:How can you guarantee quality?

Always a pre-production sample before mass production; Always final Inspection before shipment.

Q:What can you buy from us?

API Couplings, Tubing Coupling, Casing Coupling, API Pup Joint/Crossover, tubing Centralizer.

Q:Why should you buy from us not from other suppliers?

We have a experience of more than 15 years of manufacturing the API couplings, pup joints, crossovers, pipes and so on. We are one of the biggest of the manufacture of API couplings in China, even in the world. We have the biggest plant and workshop here.

Q:What services can you provide?

Accepted Delivery Terms: FOB, CFR, CIF, EXW; Accepted Payment Currency: USD, EUR, CNY; Accepted Payment Type: T/T, L/C, D/P D/A, Cash; Language Spoken: English, Chinese, French, Korean.