The depth at the position of the exhaust trench usually small to avoid material flowing out. And depending on the viscosity of each type has different depth plasticThe width of the Groove without limits, but in practice 2,538 in 12.7 mm ÷Length (l): 0.762 mm ≤ l ≤ 3,175 mmWhen designing Groove Guide notes:Track number depends on speed and traffic filled out.When the need to increase the exhaust can increase or expand the track grooves.
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