554 30 R 40 20 weight (kg) 174 30 R 50 20 weight (kg) 135 R 20 20 30 40 weight (kg) 89 Internal corner 90° R=20 cm External corner 90° R=50 cm External corner 180° R=40 cm curve piece 30x20 2/2 type IB 4 edge courses width 20cm edge courses
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