What after-sales services are provided?

We offer standard warranty coverage, optional extended warranty, and on-site or remote operation and maintenance training.

What are the payment terms?

Accepted payment methods include LC, T/T, PayPal, and Western Union.

What is the average lead time for delivery?

The average lead time is within 15 workdays, regardless of peak or off-peak seasons.

High Strength Perforated Sub for Drilling Tools

Name: High Strength Perforated Sub for Drilling Tools
Brand: Tianjin Dongfanglong Petroleum Equipment Manufacture Co., Ltd.
SKU: 1990106671

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

US$150.00

1 Piece

Product profile

After-sales Service

3 Months

Warranty

12 Months

Certification

API

Model NO.

3-1/2

Surface Treatment

Spray-Paint

Centralizer Type

Structure

Niple

Material

Cast Steel

Type

Transport Package

Wooden Case

Specification

1800*500*500

Trademark

DFL

Origin

China

Key features

API Certified Quality: Manufactured in strict compliance with API standards for oilfield reliability.

Robust Cast Steel Build: Constructed from high-strength cast steel for superior durability and pressure resistance.

Versatile Downhole Application: Ideal for drilling, well completion, casing systems, and sand control operations.

Optimized Fluid Control: Precisely machined holes regulate flow, balance pressure, and improve circulation efficiency.

Comprehensive Warranty: Standard 12-month warranty or 2,000 operating hours, with optional 36-month coverage.

Professional Training Support: On-site or remote operation and maintenance training provided for optimal usage.

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 is the standard warranty period?

The standard warranty is 12 months or 2,000 operating hours, whichever comes first. Extended coverage up to 36 months is optional.

Q:What material is the perforated sub made of?

It is made of high-strength cast steel with a spray-paint surface treatment for durability.

Q:What are the main applications for this tool?

It is suitable for oil and gas drilling, well completion, downhole tools, casing/tubing systems, and oilfield production.

Q:How does the perforated sub work?

It allows drilling or formation fluid to pass through precisely machined holes while maintaining structural integrity, regulating flow and stabilizing the wellbore.

Q:What certifications does the product have?

The product is certified under API standards to ensure quality and reliability in harsh downhole environments.