Before starting the bending operations the hydraulic pressure / water level / flow switches etc. are checked. The pipe is now heated by induction to the temp of 815 - 995 C. By pushing the pipe by push clamp the bending of the pipe is started slowly and carried out at speed of 10 - 40 mm/min. The bending operation is stopped at the specified angle of bend and predetermined arc length.
For example; 'income' is a variable that can vary between data units in a population (i.e. the people or businesses being studied may not have the same incomes) and can also vary over time for each data unit (i.e. income can go up or down). A continuous variable is a numeric variable.
Definition of VARIABLE EXPENSES. Those that vary with the amount of goods you produce or sell. These may include utility bills, labor, etc. expenses that change with changes in either sales volume. or sales revenue, in contrast to fixed expenses that remain the same. over the short run and do not fluctuate in response to changes in sales. volume or sales revenue.