High-Energy Drop Weight Testers from 20,000 J
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Industries
- Metals
Max. energy
- 100,000 joules
Type of test
- Drop weight test
Standards
- API-RP 5L3
- DIN EN 10274
- ASTM E436
High-energy drop weight tests
ZwickRoell DWT high-energy drop weight testers are used for testing and evaluating fracture surfaces of ferritic steels. The test method is described as a drop weight test in the following standards: API-RP 5L3, DIN EN 10274 and ASTM E436.
Specimens from the pipe wall of large oil and gas pipelines are subjected to the drop weight test to API 5L. The specimens with a height equal to the original wall thickness and widths of several centimeters are subjected to abrupt loading via a vertically falling weight with a tup. The energy (weight and release height) is set so that the specimen breaks and the fracture surface can be assessed visually.
Specimens for High-Energy Drop Weight Testers
Technical Overview
Model DWT | 20-2.5 | 20-5 | 30-2.5 | 30-5 | 40-2.5 | 40-5 | |
Energy | 20000 J | 20000 J | 30000 J | 30000 J | 40000 J | 40000 J | |
Item No. | 640064 | 640070 | 1093944 | 1072003 | 1086456 | 1093948 | |
Load frame | |||||||
Max. drop height | 2.5 | 5 | 2.5 | 5 | 2.5 | 5 | m |
Drop weight | 820 | 410 | 1225 | 612 | 1630 | 820 | kg |
Min. drop weight | 460 | 410 | 457 | 457 | 480 | 456 | kg |
Additional single weights | |||||||
6.0 kg | - | - | 8 | 6 | 2 | - | pcs. |
15.0 kg | 2 | - | 15 | 8 | 76 | 15 | pcs. |
Total weight | 6100 | 6350 | 6850 | 7050 | 7150 | 7050 | kg |
Impact velocity | 7 | 9.9 | 7 | 9.9 | 7 | 9.9 | m/s |
Lift-unit speeds | |||||||
fast | 18 | 18 | 18 | 18 | 18 | 18 | m/ min |
slow | 3 | 3 | 3 | 3 | 3 | 3 | m/ min |
Dimensions | |||||||
A - overall height | 5900 | 8000 | 5750 | 8000 | 5900 | 7960 | mm |
B - width | 3100 | 3060 | 3210 | 3060 | 3210 | 3060 | mm |
C - width | 1140 | 1140 | 1140 | 1140 | 1140 | 1140 | mm |
D - width | 1965 | 1965 | 1965 | 1965 | 1965 | 1965 | mm |
Foundation dimensions | 2150 x 2150 | 2150 x 2150 | 2150 x 2150 | 2150 x 2150 | 2150 x 2150 | 2150 x 2150 | mm |
Max. specimen dimensions | |||||||
Length | 305 | 305 | 305 | 305 | 305 | 305 | mm |
Width | 50 | 50 | 50 | 50 | 50 | 50 | mm |
Height | 76 | 76 | 76 | 76 | 76 | 76 | mm |
Option: Low-temperature cooler | |||||||
Temperature | -80 | -80 | -80 | -80 | -80 | -80 | °C |
Max. temperature variation | ±1 | ±1 | ±1 | ±1 | ± 1 | ±1 | °C |
Number of specimens | 3 | 3 | 3 | 3 | 3 | 3 | pcs. |
Specimen dimensions | 50 x 76 x 305 | 50 x 76 x 305 | 50 x 76 x 305 | 50 x 76 x 305 | 50 x 76 x 305 | 50 x 76 x 305 | mm |
Electrical supply data | |||||||
Electrical supply: | |||||||
at 50 Hz | 3x 400-440 | 3x 400-440 | 3x 400-440 | 3x 400-440 | 3x 400-440 | 3x 400-440 | V, N/PE |
at 60 Hz | 3x 440-480 | 3x 440-480 | 3x 440-480 | 3x 440-480 | 3x 440-480 | 3x 440-480 | V, N/PE |
Power consumption | 11 | 7 | 11 | 5 | 11 | 5 | kVA |
Compressed air | 8 | 8 | 8 | 8 | 8 | 8 | bar |
Air consumption | 600 | 600 | 600 | 600 | 600 | 600 | l/min |
Ambient temperature | +10 ... +35 | +10 ... +35 | +10 ... +35 | +10 ... +35 | +10 to +35 | +10 ... +35 | °C |
Humidity | 20 ... 90 | 20 ... 90 | 20 ... 90 | 20 ... 90 | 20 to 90 | 20 ... 90 | % |
Model | DWT60-5 | DWT80-5 | DWT100-5 | |
Energy | 60000 J | 80000 J | 100,000 J | |
Item No. | 003972 | 011273 | 011272 | |
Load frame | ||||
Max. drop height | 0.5 ... 5 | 0.5 ... 5 | 0.5 ... 5 | m |
Drop weight | 1225 | 1630 | 2040 | kg |
Min. drop weight | approx. 831 | 831 | 856 | kg |
Additional single weights | ||||
11.0 kg | 6 | 2 | - | pcs. |
13.5 kg | - | 2 | - | pcs. |
16.5 kg | - | - | 2 | pcs. |
20.5 kg | - | 2 | - | pcs. |
27.5 kg | 12 | 26 | 42 | pcs. |
Total weight | 9300 | 9800 | 12300 | kg |
Impact velocity | 3.1 ... 9.9 | 3.1 ... 9.9 | 3.1 ... 9.9 | m/s |
Lift-unit speeds | ||||
fast | 18 | 18 | m/min | |
slow | 3 | 3 | m/min | |
Dimensions | ||||
A - overall height | 8000 | 8000 | 8580 | mm |
B - width | 3060 | 3060 | 3060 | mm |
C - width | 1360 | 1300 | 1360 | mm |
D - width | 2500 | 2500 | 2500 | mm |
Foundation dimensions | 2550 x 2550 | 2550 x 2550 | 3050 x 3050 | mm |
Max. specimen dimensions | ||||
Length | 305 | 305 | 305 | mm |
Width | 50 | 50 | 50 | mm |
Height | 76 | 76 | 76 | mm |
Low-temperature cooler | ||||
Temperature | -80 | -80 | -80 | °C |
Max. temperature variation | ±1 | ±1 | ± 1 | °C |
Number of specimens (number @ dimensions) | 10 @ (10x77x305) | 10 @ (10x77x305) | 10 @ (10x77x305) | pcs. |
Electrical supply data | ||||
Electrical supply | 3x 400 | 3x 400 | 3x 400 | V, N/PE |
Power consumption | 11 | 11 | 11 | kVA |
Power supply frequency | 50 | 50 | 50 | Hz |
Compressed air | 8 | 8 | 8 | bar |
Air consumption | 205 | 205 | 205 | l/min |
Ambient temperature | +10 ... +35 | +10 ... +35 | +10 ... +35 | °C |
Humidity | 20 ... 90 | 20 ... 90 | 20 ... 90 | % |
Accessories for Drop Weight Tests

Cooler for tests at low temperatures (between -80 and +30°C)
The low temperature circulation bath for steel specimens complies with established test standards (e.g. API RP 5L3). It can accommodate 3 specimens with a specimen thickness of 50 mm or 10 specimens with a specimen thickness of 10 mm. An integrated coolant circulation system and high heating/cooling capacity ensures short heating and cooling times.