Weld Integrity Indentation Tester for Sour-Service Towers and Tube Joints PMT-1000
Evaluate weld integrity and residual stress in critical petrochemical components with the PMT-1000 portable indentation tester. Designed for sour-service tower welds and tube-to-tubesheet joints, this instrument warns of cracking risk and prevents leakage by measuring actual material strength and residual stress on site, without shutdown.
Residual Stress Measurement – Evaluates residual stress at tube-to-tubesheet joints to prevent leakage (source: image caption).
Bolt Yield Strength Measurement – Measures actual bolt yield strength to avoid seal failure from under-preload (source: image caption).
High Precision – 100 Hz data acquisition rate and 0.01-30 mm/min loading speed for accurate material characterization.
Full-Lifecycle Evaluation – Supports safety evaluation from PQR (procedure qualification record) to in-service inspection (source: image caption).
Technical Specifications
Parameter
Value
Maximum load
1000 N
Actuation range
25 mm
Loading speed
0.01~30 mm/min
Data acquisition rate
100 Hz
Rated voltage of motor
2.1 V
Rated current of motor
3 A
Wired/wireless power
220 V / 24 V
Testing range
Macro-scale
Indentation depth
60~120 μm
Models and Options
PMT-1000 standard model. Optional fixtures for specific weld geometries and custom analysis software are available.
Materials and Structure
Indenter tips are made of cemented carbide, stainless steel, and aluminum alloy. The instrument structure supports easy access to weld joints and tube-to-tubesheet areas.
Applications
Ideal for petrochemical plants, special inspection institutes, and energy industries. Used for weld quality testing, residual stress evaluation, and preventing leakage in pressure vessels and piping.
Case Study
Chemical Plant (China) – Used for safety evaluation of in-service equipment for 10 years, with stable operation and fast, accurate results.
Special Inspection Institute (China) – Applied to test special equipment, achieving stable operation and high accuracy over 10 years.
FAQ
Can the PMT-1000 detect cracking risk in sour-service tower welds?
Yes, it is designed for minor-damage stress testing to warn of cracking risk.
How does it evaluate residual stress at tube-to-tubesheet joints?
It measures indentation parameters to derive residual stress, helping prevent leakage.
Can it measure bolt yield strength?
Yes, it measures actual bolt yield strength to avoid seal failure from under-preload.
Is it suitable for in-service inspection?
Yes, it supports full-lifecycle safety evaluation from PQR to in-service inspection.
What is the maximum load?
The maximum load is 1000 N.
What is the data acquisition rate?
100 Hz.
What are the available indenter tip materials?
Cemented carbide, stainless steel, and aluminum alloy.
Inquiry Information
Contact us for pricing and customization. Email: vincent_zhang@zhanghuayaoji.com | Phone: +86 181-1890-2332
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