WJ Petroleum | High-Quality Oilfield Tubing & Casing Equipment Manufacturers

About WJ Petroleum

Hengshui Weijia Petroleum Equipment Manufacturing Co., Ltd. is a joint venture between Canada Westcan Oilfield Supply Ltd and Jizhou Zhongjia Rubber Products Co., Ltd. We strictly follow API standards to manufacture high-performance products used in oil fields across more than 20 countries.

Our commitment to quality, reliability, and international compliance ensures that every component we produce meets the rigorous demands of modern drilling and extraction operations.

100+

Company Staff

1.7M m²

Facility Area

1.5M+

Annual Capacity

30+

Precision Lathes

Our Journey

A legacy of excellence, compliance, and global partnerships since 2009.

2009

Established partnership with WestCan Oilfield Supply Ltd (Canada)

2010

Obtained API SPEC 5CT, ISO9001, ISO45001, and ISO14001 certifications

2011

Participated in CBSA investigation into Tubing Pup Joints from China

2012

Received favorable findings and normal values from CBSA

2015

Re-investigated by CBSA and maintained excellent standing

Our Products

Engineered for durability, precision, and compliance with API standards across global oil and gas operations.

Tubing Pup Joint

Short connector used to adjust tubing string length. Made from J55, N80, P110 steel grades.

• API SPEC 5CT Compliant
• H2S Corrosion Resistant Options
• Precision Threaded Ends

Tubing Coupling

Connects tubing sections with conical and flat thread design for reduced stress concentration.

• Dual Thread Design
• Fatigue & Fracture Resistant
• Prevents String Breakage

Crossover

Enables connection between different thread types or sizes in tubing and casing strings.

• Multi-Thread Compatibility
• High Torque Resistance
• Seamless Integration

Casing Pup Joint

Adjusts casing string length with high-strength steel construction for well integrity.

• J55, N80, P110 Grades
• Weldable Options
• Corrosion Resistant (C90/T95)

Casing Coupling

Connects casing pipes with precision threading for secure, leak-free joints.

• API 5CT Certified
• High Pressure Rated
• Long Service Life

Perforated Tubing Pup Joint

Features precision-drilled holes for controlled fluid flow in completion operations.

• Custom Hole Patterns
• Flow Optimization
• Sand Control Ready

Swage

Reduces pipe diameter smoothly for transitions between different tubing sizes.

• Smooth Bore Transition
• Minimizes Turbulence
• High Strength Alloy

Pump Seating Nipple

Provides a landing point for downhole pumps with precision internal profile.

• Precision Internal Bore
• Wear Resistant
• Secure Pump Locking

Bull Plug

Solid plug used for pressure testing or isolating sections of tubing string.

• Full Bore Seal
• High Pressure Rated
• Reusable Design

Tubing Thread Protector

Protects threaded ends during transport and storage to prevent damage.

• Durable Plastic/Metal
• Weather Resistant
• Easy Installation

Why Choose WJ Petroleum

API & ISO Certified

All products meet API SPEC 5CT, ISO9001, ISO14001, and ISO45001 standards for quality and safety.

Global Export Experience

Products exported to over 20 countries with proven performance in diverse geological conditions.

High Production Capacity

1.5 million units annual capacity with 30+ precision lathes and advanced quality control systems.

Frequently Asked Questions

What materials are used in your tubing and casing products?

Our products are primarily made from J55, N80, and P110 steel grades. For sour service environments, we offer hydrogen sulfide corrosion-resistant grades C90 and T95.

Are your products API certified?

Yes, all our products comply with API SPEC 5CT standards. We also hold ISO9001, ISO14001, and ISO45001 certifications.

Can you customize pup joints and couplings?

Yes, we offer customization for length, thread type, material grade, and special coatings based on client requirements.

What is the delivery time for bulk orders?

Standard delivery time is 30-45 days depending on order size and destination. We provide logistics support for global shipping.

Do you provide technical support?

Yes, our engineering team provides technical consultation, installation guidance, and product selection support.

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