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3 Staition Stress Relaxation Testing Machine
US$49,005.00
1-2 Pieces
US$48,555.00
3-4 Pieces
US$48,005.00
5+ Pieces
Product profile
Customization
AvailableAfter-sales Service
Online Technical SupportWarranty
1 YearMax Diameter of Workpiece
70mmMass Scope of Workpiece
1000kgType
Strength Testing MachineMaxcapacity
<1000KNAccuracy Grade
1Load Way
Electronic LoadLoading Method
Static LoadDisplay
ComputerControl
Computer ControlWeight
1000-2000KgPower Source
AC380VOil Cylinder Position
UnderApplication
Stress-Relaxation TestMaterial
Pre-Stressed Concrete Strand, Pre-Stressed ConcretUsage
Steel Industry, Laboratory, University, InstitutioAvailable Capacity
200/300/400/500/600kNTransport Package
Wooden CaseSpecification
300/400/500/600KNTrademark
HualongOrigin
ChinaKey features
Multi-Model Capacity Options: Available in 200, 300, 400, and 500 kN capacities to suit various testing needs.
Automatic Stress Relaxation Calculation: Automatically calculates 1000-hour stress relaxation rate with double or single logarithm options.
High Precision Temperature Control: Features a high-precision temperature recorder to monitor room temperature variations during testing.
Servo-Controlled Drive System: Ensures high precision load/displacement close-loop control with very low noise operation.
Real-Time Curve Drawing: Automatically draws real-time curves for residual stress, temperature, and relaxation rate versus time.
Flexible Loading Control: Allows arbitrary setting of loading speed with options for constant load and constant displacement control.
Comprehensive Test Reporting: Automatically calculates stress relaxation properties and prints complete test diagrams.
1-Year Warranty Coverage: Includes a standard 1-year warranty for peace of mind and machine reliability.
Company profile

Hualong Test Co., Ltd.Shanghai, China
Business Type: Manufacturer/Factory, Trading Company, Group CorporationExport Year: 1993-05-08Nearest Port: Shanghai /QingdaoAverage Response Time: ≤1.92hTerms of Payment: T/T, Western Union, Money GramInternational Commercial Terms(Incoterms): FOB, EXW, CFR, CIF, DDP, CIP, CPT
AI-Powered supplier vetting
SummaryHualong Test Co., Ltd. is a China-based limited company in Shanghai, identified as a trading company, manufacturer/factory, and group corporation. It reports more than 10 production lines, ISO 9001 and ISO 14001 management-system certifications, 21–30 years of R&D-engineer experience, and 50 quality-control staff. Its product scope covers numerous material and mechanical testing machines and fixtures, with R&D completed for testers across more than 420 types. The supplier exports to multiple global regions and has operated export activities since 1993. It states that products follow ASTM, BS, EN, ISO, JIS, and other standards. Evidence of after-sales capability is limited to a stated after-service department, while customization is supported by broad product development evidence but not explicitly confirmed for customer-specific orders. Trade records show one transaction each for several products with a Bangladesh buyer, providing limited customer-case evidence.
Supplier typeThe supplier is explicitly identified as a trading company, manufacturer/factory, and group corporation, with a limited-company ownership structure and operations in Shanghai, China. This indicates both manufacturing and trading involvement rather than a purely intermediary profile.
CertificationsThe company states that its processes are controlled according to ISO 9001, and its management-system certifications are listed as ISO 9001 and ISO 14001. These certifications provide explicit evidence of formal quality and environmental management systems.
R&D capabilityHUALONG reports completed R&D work for testers covering more than 420 types and indicates 21–30 years of total R&D-engineer experience. This is explicit evidence of substantial product-development capability across multiple testing categories.
Production capacityThe supplier reports more than 10 production lines, manufactures a broad range of testing equipment, and maintains 50 quality-control staff. Its products cover tensile, compression, impact, fatigue, torsion, bending, and other testing applications, supporting a broad production scope.
Client casesTrade records associate HUALONG TEST CO., LTD. with CABLE INDUSTRIES OF BANGLADESH LTD. for extensometers, shear test fixtures, three-point bending fixtures, and testing grips/compression plates. Each listed product has one recorded transaction, so the evidence confirms a customer relationship but provides only a limited set of documented cases.
Product Q&A
Q:What materials can this machine test?
A:
It is designed for stress-relaxation testing of metal materials such as pre-stressed concrete strands, bars, and steel ropes.
Q:What are the available load capacities?
A:
The machine is available in four models with capacities of 200 kN, 300 kN, 400 kN, and 500 kN.
Q:What is the maximum workpiece diameter and mass?
A:
The machine supports a maximum workpiece diameter of 70mm and a mass scope up to 1000kg.
Q:What kind of after-sales support is provided?
A:
We offer online technical support to assist with any operational or technical issues.
Q:What standards does the machine comply with?
A:
It follows Standard EN10391:2003 for stress relaxation testing and ASTM E328-02(2008) for materials and structures.
Send Inquiry
*To:
Hualong Test Co., Ltd.
Hualong Test Co., Ltd.*Content:
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