GUINEA GUINEAMaribaya Oil TerminalAutomatic Crude Oil Sampling System✓ Completed CHINA CHINAPipeline Metering StationZHYQ-II Automatic Sampling System✓ Completed MIDDLE EAST MIDDLE EASTOil Refinery ProjectCrude Oil Sampling Solution✓ Completed SOUTHEAST ASIA SOUTHEAST ASIAMarine Loading TerminalAutomatic Sampling System✓ Completed

WHY CHOOSE ZNYB

Built for Reliability. Trusted Worldwide.

Decades of experience, advanced manufacturing, and dedicated support — delivering dependable solutions that perform in the field.

30 years of ZNYB sampling expertise

30 Years of Sampling Expertise

Three decades of innovation and commitment to accuracy, safety and reliability.

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ZNYB petroleum sampling engineer and equipment

Petroleum Sampling Expertise

Professional solutions for crude oil, refined products and petroleum measurement applications.

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ZNYB global project experience

Global Project Experience

Customized engineering solutions delivering reliable performance worldwide.

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ZHYQ-II automatic crude oil sampling system with open cabinet doors

ZHYQ-II AUTOMATIC CRUDE OIL SAMPLING SYSTEM

WHAT IS ZHYQ-II?

ZHYQ-II is a project-configured automatic crude oil sampling system designed for representative sample collection during crude oil transfer. It integrates crude oil circulation, automatic sampling, process monitoring, sample collection and system control into one engineered solution.

The system can be configured according to actual pipeline conditions, crude oil properties, installation environments and project-specific operating requirements.

Representative Sampling

Flow-proportional or time-proportional sampling can be configured according to project requirements.

Closed Sample Collection

Pressure-resistant sample receivers help preserve sample integrity during collection and transfer.

Process Monitoring

The system can integrate project-specific monitoring functions such as flow and water-content related process data.

Integrated Control

Sampling operation, parameter settings, operating status and system control are managed through the control unit.

ONE ZHYQ-II PLATFORM. CONFIGURED FOR DIFFERENT PROJECT CONDITIONS.
PipelineStorage TerminalOilfieldMarine & OffshoreComplex Transfer
EXPLORE ZHYQ-II

CERTIFICATIONS & QUALITY ASSURANCE

Built to Meet Industrial Requirements.
Tested Before Delivery.

Verified certifications, patent-backed development, and strict factory inspection help ensure dependable performance in the field.

ZHYQ-II explosion-proof certification

ZHYQ-II
Explosion-Proof Certification

Certified for safe operation in hazardous industrial environments.

ZNYB ISO 9001 quality management certificate

ISO 9001
Quality Management

Manufacturing and quality processes managed under a recognized quality system.

ZNYB invention patent for petroleum sampling technology

Invention Patent

Demonstrates long-term technical innovation in oil sampling solutions.

ZNYB utility model patent for crude oil sampling equipment

Utility Model Patent

Supports practical engineering improvements and equipment reliability.

Assembly Inspection
Functional Testing
Pressure & Leakage Checks
Factory Acceptance Preparation
VIEW CERTIFICATIONS

ENGINEER YOUR ZHYQ-II

Every project starts with different operating conditions.

Pipeline Size
Flow Rate
Operating Pressure
Sampling Requirement
Crude Oil Temperature
Control / DCS Integration

Share your project conditions. Our engineers will recommend the appropriate ZHYQ-II configuration.

START PROJECT EVALUATION
ZNYB engineers assembling and inspecting petroleum sampling equipment

TECHNICAL INSIGHTS

Engineering Knowledge for Crude Oil Sampling

Explore technical articles, application know-how, and maintenance insights for reliable crude oil sampling operations.

Why Flow-Proportional Sampling Matters in Crude Oil Custody Transfer

Crude Oil Sampling

Why Flow-Proportional Sampling Matters in Crude Oil Custody Transfer

Flow-proportional sampling links crude oil sample increments to transferred volume, helping build a more representative composite sample when flow changes.

READ ARTICLE
What Is Custody Transfer Sampling in Crude Oil Measurement?

Crude Oil Sampling

What Is Custody Transfer Sampling in Crude Oil Measurement?

Learn how custody transfer sampling works in crude oil measurement, from representative pipeline mixing and flow-proportional increments to sample handl...

READ ARTICLE
ZNYB engineer inspecting a crude oil pipeline sampling system

Crude Oil Sampling

Jet Mixing vs Static Mixing in Crude Oil Sampling Systems

Compare jet mixing and static mixing in crude oil sampling systems, including low-flow performance, pressure loss, operating range and project selection...

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PROJECT WORKFLOW

How Your Project Moves Forward

A clear step-by-step service process from technical consultation to long-term support.
01

Consultation

Understand pipeline conditions, sampling goals and operating requirements.

Define project requirements and sampling conditions.

02

Engineering Design

Build the right system solution based on your project scenario.

Application-specific system design.

03

Manufacturing

Precision fabrication and controlled assembly in-house.

Precision fabrication and assembly.

04

Factory Testing

Test, inspect and verify system performance before delivery.

Inspection and performance verification.

05

Delivery

Secure packing and organized shipment to the project site.

Secure packing and project delivery.

06

Installation

Support on-site setup and connection to operating conditions.

On-site setup and connection support.

07

Commissioning

Fine-tune operation and confirm stable sampling performance.

Start-up and performance verification.

08

Training & Support

Operator guidance, documentation and long-term technical support.

Operator training and technical support.

Need a custom sampling solution? Talk to Our Engineer
Frequently Asked Questions
What is an automatic crude oil sampler?

An automatic crude oil sampler is an intelligent system designed to collect representative crude oil samples automatically from pipelines, storage terminals, marine loading systems and transfer stations. Compared with manual sampling, it improves accuracy, safety and operational efficiency while reducing human interference.
What are the main applications of ZNYB automatic crude oil samplers?

ZNYB automatic crude oil samplers are widely used in crude oil pipelines, oil storage terminals, refineries, marine loading and unloading facilities, custody-transfer metering systems and oilfield gathering stations.
What pressure ratings are available?

The system supports multiple nominal pressure grades: 1.6 MPa, 2.5 MPa, 4.0 MPa, 6.0 MPa and 10.0 MPa.
What is the explosion-proof rating?

The standard explosion-proof grade is Ex d II BT4. Customized explosion-proof configurations are available according to project requirements.
Do you provide installation support?

Yes. ZNYB provides technical consultation, engineering design, equipment manufacturing, factory testing, installation guidance, commissioning support and operator training.
Can ZNYB customize the sampling system according to project requirements?

Yes. We provide customized solutions based on pipeline pressure, medium characteristics, flow rate, installation environment, explosion-proof requirements and control-system requirements.