Works from the start to the end of the construction sequence
Only the steel pipe can play trumpet. Cement pipes and cast iron pipes are fitted with mouth protection. Playing the bell mouth, so that the interface of the casing outward, so as to prevent the metal sleeve in the threading of the mouth pierce the cable insulation. Trumpet production: Step one: cut the brass according to the length of the need; Step two: the copper tube placed between the clamping wheel and cutting knife, tighten the adjustment knife refers to the appropriate position; Step three: clockwise rotation cutter A circle, and then tighten the spiral handle half to a lap, once again clockwise rotation cutter a circle, until the cut so far.
(TCPIPv) - use the following IP address: IP address is the same as the IP address of the Internet, the IP address is the IP address, and the IP address is the same as the IP address
1 meter price = 3.14 [(D / 2) * 2- (d / 2) * 2] x1000mmx7.8x10-6kg / mm * 3x5.7 yuan / kgD for the pipe diameter d pipe diameter
