Drop Weight Tear Tester (DWTT) — ASTM E436 & API RP 5L3
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 120,000J.
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
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
Frequently Asked Questions
What impact energy range does the DWTT cover?
Impact energies from 20,000 to 120,000 joules at impact velocities of 5-8 m/s, on specimens of 300×75 mm and 3-50 mm thickness, at test temperatures from -100°C to +20°C.
Why is DWTT testing required for pipeline steel?
The drop weight tear test measures a steel’s resistance to running fracture — the property that determines whether a crack in a gas pipeline arrests or propagates. Pipeline grades are routinely qualified by DWTT under API and ASTM requirements.
Is the Drop Weight Tear Tester customised to my requirement?
Yes. Every machine we build is custom-engineered — capacity, dimensions, and configuration are matched to your line. Send your requirement via the enquiry form or call +91 91091 02280 for a firm quote. Equipment is manufactured to ASTM E436, API RP 5L3, EN 10274, and test certificates are available on request.
*This is only an approximate starting price — a rough, loose estimate. Every machine is custom-engineered to your requirements, so the final price depends on capacity, specifications, and configuration — reach out for a firm quote.
