How do you ensure product quality?

We conduct spot inspections and finished product inspections at each production step, including mechanical and chemical tests.

OEM API 5CT 2-7/8'' Carbon Steel Tubing and Casing Coupling Galvanised Surface Casting Techniques for Oil Gas Applications

Name: OEM API 5CT 2-7/8'' Carbon Steel Tubing and Casing Coupling Galvanised Surface Casting Techniques for Oil Gas Applications
Brand: Tianjin Dongfanglong Petroleum Equipment Manufacture Co., Ltd.
SKU: 2052320922

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

US$1.26

50 Pieces

Sample price:US$30.00/piece.Request sample

Product profile

Warranty

1year

Name

OEM API 5CT 2-7/8'' Carbon Steel Tubing and Casing

Grade

K55 J55 L80 N80 P110

Model NO.

2-7/8

Thread

Nu EU

Usage

Oil Pipe

Specification

2-7/8

Trademark

EASTLONG

Origin

Puyang China

HS Code

7307990000

Production Capacity

500 PCS One Day

Key features

API 5CT Certified Quality: Products meet API 5CT/5B standards with ISO9001, ISO14001, and API certificates.

Multiple Grade Options: Available in J55, K55, N80, L80, and P110 grades for diverse oil field needs.

EUE and NUE Types: Offers External Upset End (EUE) and Non-Upset End (NUE) tubing couplings.

Comprehensive Size Range: Sizes include 2-3/8", 2-7/8", 3-1/2", 4", and 4-1/2" for various applications.

100% Joint Efficiency: EUE joints provide tension and pressure strength greater than the pipe body.

Rigorous Quality Control: Includes tensile, impact, chemical, and sulfide stress cracking tests.

OEM Customization Service: Supports OEM services for specific name, grade, thread, and usage requirements.

Fast Lead Time: Average lead time is within 15 workdays for both peak and off-season periods.

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:How can I place an order?

You can contact us by email with your order details or place an order online.

Q:What payment methods do you accept?

We primarily use T/T and Western Union. Payment is requested after confirming the Proforma Invoice (PI).

Q:What is the order procedure?

We discuss details via email or TM, issue a PI for confirmation, collect deposit or full payment, then start production. Balance is paid before shipment.

Q:What is the lead time for production?

If items are not in stock, we usually need 15-25 days. The average lead time is within 15 workdays.

Q:How do you handle defective products?

We provide replacement or credit to the customer. Defective items are usually replaced in the next shipment.