Drop Weight Tear Tester (DWTT)
Drop Weight Tear Tester (DWTT) - Specialized testing equipment for evaluating fracture characteristics of ferritic steels
DWTT Overview
Drop Weight Mechanism
Testing Operation
Control System
Side View
Schematic View
The Drop Weight Tear Tester (DWTT) evaluates fracture resistance in ferritic steels used for pipelines and pressure vessels. By subjecting notched specimens to controlled impact, it determines a material's resistance to brittle fracture propagation. Available in standard, high-capacity, and low-temperature configurations with impact energies from 20,000J to 100,000J.
Product Variants
- Standard DWTT: For routine drop weight tear testing operations
- High-Capacity DWTT: Enhanced impact energy for thicker materials
- Low-Temperature DWTT: Integrated cooling system for testing down to -100°C
Specifications
Impact Energy:
20,000J to 100,000J
Impact Velocity:
5 to 8 m/s
Specimen Size:
300 × 75 × 3-50 mm
Temperature Range:
-100°C to +20°C
Standards:
ASTM E436, API RP 5L3, EN 10274
Key Features
- Adjustable drop height for precise energy control
- Hardened hammer and anvil (HRC 56+)
- Integrated low-temperature cooling system
- Compliant with international testing standards
Applications
- Pipeline material qualification
- Pressure vessel material testing
- Steel plate fracture toughness evaluation
- Material certification testing
