English to Russian Tech/Engineering Construction / Civil Engineering

Use slings or ropes (always flexible means )to lift the pipes.
d)If lift are used they must be of canvass or polyester with a minimum width of 10 cm and with the possibility of pulling both in double branch as in jetting (taking into account the maximum loads to be used in each case).If ropes are used , they must be of nylon with a minimum diameter of 30mm.