Piping installation: can set after the installation, together will also be our tubes opened longitudinally garnish with glue, glue into.
管道安装：可套上后一起安装，也可将本管材纵向切开后再用胶水粘合而成。
2
According to the principle of thermal equilibrium and piping thermorytic characteristics, the relationship between the flow velocity in the heating pipe and the greenhouse climate has been set up.
The author describes the points to be taken into consideration in piping design for relief valve and their practices in order to operate under the set pressure and discharge capacity.