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Electromagnetic Ultrasonic Dual-Wave Bolt Stress Meter ST100
Multi-channel air-coupled ultrasonic flaw detector PRACUT-M8
Multi-channel air-coupled ultrasonic flaw detector PRACUT-M4
Air-Coupled Ultrasonic Tester ACT20
Air-Coupled Ultrasonic Tester PRACUT-111
Electromagnetic Ultrasonic Thickness Gauge HT300

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About Us

Suzhou Bosheng Technology Co., Ltd.

A leading manufacturer of high-power ultrasonic nondestructive testing equipment in the industry.

Suzhou Phaserise Technology Co., Ltd. (www.phaserise.com) is a leading manufacturer of high‑power ultrasonic nondestructive testing equipment in the industry. With a vision to “make life better through nondestructive testing,” the company adheres to the philosophy of “innovation meets market needs, quality delivers value,” providing customers with professional electromagnetic acoustic transducer (EMAT) and air‑coupled ultrasonic testing (ACUT) equipment, solutions, and technical services.

Suzhou Phaserise Technology Co., Ltd. (www.phaserise.com) is a leading manufacturer of high‑power ultrasonic nondestructive testing equipment in the industry. With a vision to “make life better through nondestructive testing,” the company adheres to the philosophy of “innovation meets market needs, quality delivers value,” providing customers with professional electromagnetic acoustic transducer (EMAT) and air‑coupled ultrasonic testing (ACUT) equipment, solutions, and technical services.

Suzhou Bosheng Technology holds three registered trademarks: PR®, PRACUT®, and BolTLife®. Throughout research and development, manufacturing, and delivery, the company consistently adheres to the management requirements of ISO 9001 for quality management, ISO 14001 for environmental management, and ISO 45001 for occupational health and safety management. Its products are widely used in sectors such as special‑purpose equipment, power generation (including wind, photovoltaic, lithium‑ion battery, hydropower, thermal, and nuclear), steel, aerospace, petrochemicals, automotive, shipbuilding, and railways.

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NEWS

News and Information

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Bolt Inspection Case Study — An OEM Uses the ST100 to Investigate Axial Force Degradation After Bolt Assembly in the Workshop

A well-known wind turbine manufacturer, leveraging the Bosheng Technology ST100 electromagnetic ultrasonic dual‑wave bolt stress meter, is investigating the axial force degradation of bolts connecting the pitch bearing to the hub after in‑shop assembly.

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2026-06-04

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[Video] Solution — In-Service Bolt Dynamic Load Testing in Situ

Bolts in rotating components of wind turbine generators—such as blade bolts, pitch bearing bolts, and main shaft bolts—are subjected to cyclic loading during operation, and the magnitude of this operational load varies with the turbine’s operating conditions. When assessing bolt fatigue life, it is typically necessary to measure the actual operational loads experienced by these bolts under different operating conditions.

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2021-07-16

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Bolt Inspection Case Study — An OEM Uses the ST100 to Investigate Axial Force Degradation After Bolt Assembly in the Workshop

A well-known wind turbine manufacturer, leveraging the Bosheng Technology ST100 electromagnetic ultrasonic dual‑wave bolt stress meter, is investigating the axial force degradation of bolts connecting the pitch bearing to the hub after in‑shop assembly.

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2021-07-09

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Bolt Inspection Case — ST100 Inspects Bolts on Wind Turbines That Have Been in Operation for 10 Years

ST100 Safeguards In-Service Wind Turbine Units In early 2021, a customer used Bosheng Technology’s ST100 product to conduct bolt axial force inspections on wind turbine units at a northwest wind farm that had been in operation for nearly ten years. During testing, it was discovered that certain bolts on specific flange surfaces of the tower exhibited very low measured axial forces—approaching zero kN. After verifying that all instrument settings were normal, it became apparent that the actual axial forces of these bolts were likely much lower than expected. Subsequent tests revealed several additional bolts in similar conditions. When one of these low‑force bolts was tapped with a tool, it was found to be loose, and its nut could be removed. The tested unit was randomly selected from among the wind turbines at this wind farm, each operating for nearly a decade. This demonstrates that even traditional torque‑based bolt inspections—conducted as spot checks over nearly ten years—can overlook critical issues, leaving some bolts with severely insufficient axial forces and potentially compromising operational safety. The ST100 provides wind farm operators with a reliable verification tool for reviewing torque inspection results. The ST100 electromagnetic ultrasonic bolt stress meter is truly nondestructive, requires no coupling agent, and enables rapid, direct measurement of axial forces (stress) in in-service bolts. It can quickly detect under‑tightened or missed‑tightened bolts, while test data can be stored, managed, and automatically compiled into reports. Because each bolt generates unique test data, using the ST100 for axial force inspections helps prevent omissions or errors, offering customers a new approach to bolt axial force monitoring and verification. Figure 1: Axial force distribution of bolts on the first section of the tower for a tested unit. Figure 2: On-site testing reveals abnormally low axial force on a particular bolt. Figure 3: A bolt that was not properly tightened can have its nut easily loosened.

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2021-06-21

400-995-2595

Suzhou

Suzhou Bosheng Technology Co., Ltd.

After-sales service: 0512-65022999-812

Sales Manager: 17306211720
Company Address: Room 1601, Building B, No. 388 Ruoshui Road, Suzhou Industrial Park, Jiangsu Province

Corporate email: sales@phaserise.com

Wuhan

Lvyin Technology (Wuhan) Co., Ltd.

After-sales service: 027-87186680

Company Address: Rooms 15 and 16, 16th Floor, Lianfeng Building, Lumo Road, Hongshan District, Wuhan City

We are sincerely seeking authorized distributors across all regions, provinces, and cities nationwide.

Bolt Inspection After-Sales Technical Service Partner:Ji Jian Technology (Wuhan) Co., Ltd. Bolt Smart Services Inc.

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