Consult the requirements of the flame retardant 0 standard from which the standard standard, and then ask the next level 0 flame retardant standard self-extinguishing time is how much. More
Steel pipe is a steel pipe bowl buckle is the connection point like a bowl button is the connection point is a disk above a lot of hole pin is not a national standard thing is not recommended to use
Clamp material, and pressure ah, a little bit of deformation of the clamp will lead to the next time the use of water leakage; some clamp is sealed with rubber ring, pressure, the rubber ring is not fully restored, will lead to Leakage of water; some cases in the pressure, the pipeline to the development of the process of training, but also lead to tight hoop tightly
