What are the payment terms?

Accepted payment terms are 30% TT in advance and 70% TT before shipment. Currencies accepted include USD, CNY, and EUR.

What is the lead time for delivery?

The average lead time is within 15 workdays for both peak and off-peak seasons.

Where is the company located?

The company is based in Tianjin, China, and has been operating since 1999.

API 5CT Gas Application Casing and Tubing Coupling 2-3/8 2-7/8 3-1/2

Name: API 5CT Gas Application Casing and Tubing Coupling 2-3/8 2-7/8 3-1/2
Brand: Tianjin Dongfanglong Petroleum Equipment Manufacture Co., Ltd.
SKU: 2066181152

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

US$5.26

50 Pieces

Sample price:US$50.00/piece.Request sample

Product profile

Warranty

1years

Name

API 5CT Gas Application Casing and Tubing Coupling

Grade

K55 J55 L80 N80 P110

Model NO.

2-3/8 2-7/8 3-1/2

Thread

EU Nu Bc Sc LC

Usage

Oil Pipe

Transport Package

Wooden Box

Trademark

EASTLONG

Origin

Puyang China

HS Code

7307990000

Production Capacity

5000 PCS One Day

Key features

API 5CT Certification: Conforms to API 5CT standards with ISO 9001, 14001, and 45001 certifications.

Customizable Sizes: Available in sizes 2-3/8, 2-7/8, 3-1/2, 4, and 4-1/2 inches.

Multiple Thread Types: Supports EU, Nu, Bc, Sc, LC, STC, BCT, and LTC thread types.

OEM and ODM Services: Full OEM and ODM support for specific requirements and branding.

Durable Surface Treatment: Features sandblasting surface treatment for enhanced durability.

Wide Grade Selection: Available in K55, J55, L80, N80, and P110 steel grades.

1-Year Warranty: Comes with a 1-year warranty period for mechanical reliability.

Global Export Experience: Exported to 31 countries including USA, Russia, and UAE since 1999.

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.