What is the warranty period?

The product comes with a 1-year warranty.

What is the size range of the couplings?

We carry sizes ranging from 2-3/8 inches to 20 inches.

Where are the nearest shipping ports?

The nearest ports are Tianjin Port, Qingdao Port, and Shanghai Port.

API 5CT Tubing and Casing Coupling Premium 1.9-20

Name: API 5CT Tubing and Casing Coupling Premium 1.9-20
Brand: Tianjin Dongfanglong Petroleum Equipment Manufacture Co., Ltd.
SKU: 2072088392

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

US$2.36

50 Pieces

Sample price:US$20.00/piece.Request sample

Product profile

Warranty

1year

Certification

API 5CT

Name

API 5CT Tubing and Casing Coupling Premium1.9-20

Model NO.

1.9-20

Thread

Nu EU Bc LC Sc

Grade

K55 J55 L80 N80 P110

Usage

Oil Pipe

Transport Package

Wooden Pallet

Trademark

EASTLONG

Origin

Puyang China

HS Code

7307990000

Production Capacity

500 PCS One Day

Key features

API 5CT Certification: All couplings meet API Specifications 5CT with authorized certificate from American Petroleum Institute.

Wide Grade Range: Available in J55, K55, N80, L80, P110 and other steel grades for various applications.

Complete Thread Types: Offers NU, EU, BC, LC, SC, and BTC thread types for tubing and casing couplings.

Comprehensive Testing: Equipped with single testing apparatus for tape, pitch, tooth depth, and profile verification.

ISO Quality Systems: Certified under ISO9001, ISO14001, ISO45001, and HSE management systems.

Fast Lead Time: Peak and off-peak season lead times are both within 15 working days.

Global Export Experience: Products exported to 31 countries including USA, Russia, and UAE since 2019.

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

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:What certifications does the product have?

The product holds API 5CT certification authorized by the American Petroleum Institute and is certified under ISO9001, ISO14001, ISO45001, and HSE systems.

Q:What steel grades are available?

We offer J55, K55, N80, N80-1, N80-Q, L80, and P110 grades for tubing and casing couplings.

Q:What thread types are supported?

Available thread types include NU, EU, BC, LC, SC, and BTC for both tubing and casing applications.

Q:What is the lead time for orders?

Both peak and off-peak season lead times are within 15 working days.

Q:What payment methods do you accept?

We accept LC, T/T, PayPal, and Western Union for payments.