ABOUT SHIZHONG

Built around one engineering discipline since 1989.

Jinan Shizhong Automation Instruments Co., Ltd. develops and manufactures differential-pressure flow primary elements and integrated metering systems.

OUR FACILITY

Engineering and manufacturing in Jinan

Main entrance and manufacturing campus of Jinan Shizhong Automation Instruments — Main manufacturing site

Inner courtyard and measurement engineering building at the Shizhong factory in Jinan — Measurement engineering courtyard

Production and assembly buildings at the Shizhong manufacturing campus in Jinan — Production and assembly buildings

OUR HISTORY

Jinan Shizhong · 37 Years of Milestones

For 37 years, one mission — measure every industrial flow with precision. From a single laboratory to a benchmark of China's differential-pressure flow instrumentation, Shizhong measures time with craftsmanship and records growth with precision.

1989
Founding
Founded the Jinan Shizhong Automation Instrument Research Institute. Starting from throttling devices and flowmeters, we served metallurgy, chemical, heating, pharmaceutical and paper industries, planting technical roots in Jinan that would grow for over three decades.
2006
Breakthrough
The anti-clogging Lierba flowmeter was finalized. Its unique "anti-clogging, maintenance-free, hot-tap" structure solved the gas-dust clogging problem, earning a core structural patent and becoming our flagship product.
2012
Transformation
The research institute was restructured into Jinan Shizhong Automation Instruments Co., Ltd. — from a research unit to a modern manufacturer integrating R&D, production, sales and after-sales.
2016
Systemization
Passed ISO 9001, ISO 14001 and ISO 45001 certifications, establishing standardized quality control, completing full-category production lines, and achieving turnkey supply capability.
2019
Certification
Obtained the Special Equipment Production License for pressure-pipeline component manufacturing (component combination assemblies), with design, machining, quality control and inspection fully meeting national statutory standards — opening the door to petrochemical, coal chemical and metallurgical high-temperature, high-pressure projects.
2020
Elevation
Recognized as a National High-Tech Enterprise. With an independent patent portfolio, we tackled high-temperature, high-dust and corrosive media, benchmarking against imported instruments to build independent flow measurement solutions.
2022
Standard-setting
As a flowmeter-housing manufacturer, Shizhong was also one of the drafting organizations of the T/CASEI 012—2022 group standard, Specification for Supervision Inspection of Flowmeter Housings for Pressure Equipment.
2023
Innovation
Launched the SmartBalance ProValve® valve-controlled flowmeter, integrating measurement, prepayment and valve control in one device, with a national invention patent applied.
2024
Accumulation
Patents and innovations surpassed 40, recognized as a National Sci-Tech SME, advancing toward a benchmark of China's throttling-type flow instruments.
2025
Breakthrough
After three years of testing, launched the adaptive wide-range flowmeter. Calibration testing by the National Steam Flow Measurement Station (Yantai) recorded accuracy class 0.5 and a 100:1 turndown ratio under the documented test conditions, with another national invention patent granted.
2026
Standard-setting again
Co-drafted T/JNM 0001—2026, Method for Online Calibration of Differential-Pressure Flowmeter Measurement Systems, filling the provincial gap in on-site calibration specifications for differential-pressure flowmeter measurement systems.

CAPABILITY

From process data to documented delivery

Application engineering

Review of fluid properties, operating envelope, piping and measurement objectives.

Precision manufacturing

CNC machining, fabrication and assembly controlled against approved drawings.

Inspection & testing

Material, dimensional, pressure and documentation checks defined by project scope.

Calibration coordination

Calibration routes planned where required by meter type, approval or contract.

Project documentation

English datasheets, drawings, certificates and inspection records for export projects.

After-sales support

Installation guidance, troubleshooting and lifecycle replacement support.

PRODUCTION & INSPECTION

Controlled manufacturing from material to final test

High-definition views of our machining, automated welding, spectral material verification, assembly, flow calibration and large-scale wind-tunnel verification facilities show how production is managed through one accountable workflow.

Shizhong flow calibration center with industrial flow test pipelines and reference instruments — Flow calibration center
High-precision flow testing facilities for completed flow-measurement assemblies.

Large-scale Shizhong wind-tunnel calibration laboratory with full-size airflow test sections for non-standard flowmeters — Large-scale wind-tunnel calibration laboratory
A purpose-built airflow facility supports controlled characterization and calibration of non-standard devices, including matrix flow arrays, averaging Pitot and Annubar-type probes, and Shizhong Lierba primary elements.

Instrumented full-scale wind-tunnel test line used to verify non-standard Shizhong flowmeter configurations before delivery — Full-scale performance verification
Instrumented test sections reproduce project-specific flow paths for coefficient determination, repeatability checks and configuration verification—supporting stable, accurate measurement performance before delivery.

Finished differential-pressure flow meter bodies arranged in the Shizhong assembly workshop — Finished-meter assembly
Completed meter bodies staged for assembly, inspection and project delivery.

Spectral material verification performed on alloy pipe components at the Shizhong factory — Spectral material verification
Handheld spectral analysis supports alloy identification before production.

Multiple high-precision CNC machining centers operating inside the Shizhong factory — High-precision machining
Multiple machining centers support repeatable production of flow-meter components.

CNC machining center with completed flow meter assemblies awaiting downstream inspection — CNC machining and preparation
Machined components and assembled meter bodies move through a controlled workflow.

Five-axis CNC machining center for complex flow meter components at the Shizhong factory — Five-axis CNC machining
Five-axis capability supports complex primary-element and instrument components.

Operator supervising an automated welding station at the Shizhong factory — Automated welding station
Controlled welding equipment is operated by trained production personnel.

CERTIFICATES & APPROVALS

Verified credentials for project qualification

Review complete credential pages with document numbers, approved scope and validity information for procurement, engineering and supplier due diligence.

ISO 9001, ISO 14001 and ISO 45001 management systems

Special Equipment Production License

SIL assessment for the models listed on the certificate

Explosion-proof certificate for the stated SER15-3600 configuration

Nine measuring-instrument model approvals

Invention, utility-model and design patent grant records

Registered trademarks and High-Tech Enterprise recognition

Chinese invention patent certificate for a differential-pressure measurement device used in Shizhong dual-orifice wide-range flowmeter development

Featured invention patent

Dual-Orifice Wide-Range Flowmeter Technology

Granted in 2025, this invention patent is officially titled “A Differential-Pressure Measurement Device.” The grant forms part of Shizhong's development of dual-orifice wide-range flowmeters for applications requiring useful measurement coverage across a broad operating envelope.

Patent number: ZL 2025 1 0551686.1
Grant date: 26 September 2025
Patent holder: Jinan Shizhong Automation Instruments Co., Ltd.
Grant type: Chinese invention patent

The patent grant documents intellectual-property protection. Final meter range, uncertainty and supplied configuration remain subject to verified process data and the approved project design.

Explore the dual-beta product

Management systemsCurrent

ISO 9001:2015 Certificate — English

No. 06725Q20908R0S

Manufacturing of flow-measurement throttling devices and sales of instruments and meters.

19 Sep 2025 – 18 Sep 2028; subject to required surveillance audits.

Management systemsCurrent

ISO 9001:2015 Certificate — Chinese

No. 06725Q20908R0S

Official Chinese-language counterpart of the quality management system certificate.

19 Sep 2025 – 18 Sep 2028; subject to required surveillance audits.

Management systemsCurrent

ISO 14001:2015 Certificate — English

No. 06724E20464R0S

Environmental management for flow-device manufacturing and instrument sales activities.

30 Sep 2024 – 29 Sep 2027; subject to required surveillance audits.

Management systemsCurrent

ISO 14001:2015 Certificate — Chinese

No. 06724E20464R0S

Official Chinese-language counterpart of the environmental management system certificate.

30 Sep 2024 – 29 Sep 2027; subject to required surveillance audits.

Management systemsCurrent

ISO 45001:2018 Certificate — English

No. 06724S30410R0S

Occupational health and safety management for manufacturing and related sales activities.

30 Sep 2024 – 29 Sep 2027; subject to required surveillance audits.

Management systemsCurrent

ISO 45001:2018 Certificate — Chinese

No. 06724S30410R0S

Official Chinese-language counterpart of the occupational health and safety certificate.

30 Sep 2024 – 29 Sep 2027; subject to required surveillance audits.

Safety & licensingCurrent

Special Equipment Production License

No. TS2737548-2027

Manufacture of pressure-pipeline component combination devices within the scope stated on the license.

Valid through 23 Jul 2027.

Safety & licensingCurrent

SIL Functional Safety Certificate — Main Page

No. 6G230808.JSAQD69

IEC 61508:2010 assessment of listed intelligent differential-pressure flowmeter models; SC 3 / SIL 3 capable subject to the stated architecture and application constraints.

08 Aug 2023 – 07 Aug 2028.

Safety & licensingCurrent

SIL Functional Safety Certificate — Annex I

No. 6G230808.JSAQD69

Annex identifying assessed model versions, component architectures, demand assumptions and failure-rate data.

Applies with the main certificate and its stated conditions.

Safety & licensingCurrent

Explosion-Proof Certificate — Intelligent DP Flowmeter

No. CLEx23.8285

SER15-3600 intelligent differential-pressure flowmeter; Ex db IIC T6 Gb under the standards stated on the certificate.

17 Nov 2023 – 16 Nov 2028.

Model approvalsApproved

V-Cone Flowmeter Model Approval

No. 2022F212-37

VSNZ V-cone flowmeter model approval; approved range and accuracy class are stated on the certificate.

Approved model and certificate scope must match the supplied configuration.

Model approvalsApproved

Lierba Flowmeter Model Approval

No. 2021F508-37

LRB-300 Lierba averaging-pressure flowmeter model approval.

Approved model and certificate scope must match the supplied configuration.

Model approvalsApproved

Flow Nozzle Model Approval

No. 2023F354-37

LG-series flow nozzle model approval.

Approved model and certificate scope must match the supplied configuration.

Model approvalsApproved

Averaging Pitot Flowmeter Model Approval

No. 2023F355-37

LGA averaging Pitot flowmeter model approval.

Approved model and certificate scope must match the supplied configuration.

Model approvalsApproved

Orifice Flowmeter Model Approval

No. 2021F509-37

SRLB orifice flowmeter model approval.

Approved model and certificate scope must match the supplied configuration.

Model approvalsApproved

Balanced Flowmeter Model Approval

No. 2020F752-37

SEGD-series balanced flowmeter model approval.

Approved model and certificate scope must match the supplied configuration.

Model approvalsApproved

Venturi-Tube Flowmeter Model Approval

No. 2023F353-37

LGW-series Venturi-tube flowmeter model approval.

Approved model and certificate scope must match the supplied configuration.

Model approvalsApproved

Wedge Flowmeter Model Approval

No. 2022F211-37

LGX-series wedge flowmeter model approval.

Approved model and certificate scope must match the supplied configuration.

Model approvalsApproved