Where are your products exported to?

Our products are exported to 31 countries and regions, including the United States, Russia, and the United Arab Emirates.

What are the available shipping terms?

We support FOB, EXW, CIF, and DDP international commercial terms.

What is the company's background?

Tianjin Dongfanglong Machine Manufacture Co., Ltd was established in 1999 as a national high-tech enterprise specializing in petroleum machinery.

Oil Pipe Coupling Tubing and Casing 5 1/2 API Casing Coupling Buttress Thread

Name: Oil Pipe Coupling Tubing and Casing 5 1/2 API Casing Coupling Buttress Thread
Brand: Tianjin Dongfanglong Petroleum Equipment Manufacture Co., Ltd.
SKU: 2058623682

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

US$3.65

500 Pieces

Sample price:US$50.00/piece.Request sample

Product profile

Name

Oil Pipe Coupling Tubing and Casing 5 1/2 API Casi

Thread

Bc LC Sc

Grade

K55 J55 L80 N80 P110

Model NO.

5-1/2

Usage

Oil Pipe

Transport Package

Wooden Pallet

Trademark

EASTLONG

Origin

Puyang China

HS Code

7307990000

Production Capacity

5000 PCS One Day

Key features

API 5CT Certified: Obtained API 5CT certificate authorized by the American Petroleum Institute.

Multiple Thread Types: Available in BC, LC, SC, NUE, EUE, STC, LTC, and BTC thread types.

Wide Grade Range: Offers K55, J55, L80, N80, and P110 grades for various applications.

ISO Certifications: Passed ISO9001, ISO14001, ISO45001, and HSE management system certifications.

Global Export Reach: Products exported to 31 countries including the US, Russia, and UAE.

Fast Lead Time: Peak and off-peak season lead time within 15 workdays.

Flexible Payment Terms: Accepts LC, T/T, PayPal, and Western Union for transactions.

Comprehensive Service: Integrates design, R&D, manufacturing, sales, testing, and technical 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: ≤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.