1. Different connection methods
JDG is a tight galvanized thin-walled wire conduit, and its connection relies on the top wire of the pipe fitting to push the pipe tightly to achieve close connection.
KBG is a buckle-type galvanized thin-walled wire tube, and its connection is to press the pipe and pipe fittings out of a small pit with buckle pliers and connect them closely.
2. Different wall thicknesses of national standards
Except for φ 16, the wall thickness of p>JDG is 1.5mm (allowable deviation of wall thickness .8), the other φ 2, φ 25, φ 32, φ 4 and φ 5 are all 1.6mm (allowable deviation of wall thickness .8).
except for φ 16 and φ 2, the wall thickness of p>KGB tube is 1.mm (allowable deviation of wall thickness .8), and the wall thickness of φ 25, φ 32 and φ 4 is 1.2mm (allowable deviation of wall thickness .1).
Extended information:
Detailed introduction of JDG pipe and KBG pipe:
1. Introduction of JDG pipe
JDG pipe is also called tight galvanized steel conduit. The conduit is made of high-quality cold-rolled strip steel, which is automatically welded by high-frequency welding machine group and protected by double-sided zinc plating; Uniform wall thickness, high welding roundness, good tolerance fit with pipe joint, small and round weld, smooth nozzle edge; The cross-section deformation is small when bending with a matching pipe bender.
the ex-factory length of p>JDG pipe is 3m and 4m, and * * has six specifications: φ 16, φ 2, φ 25, φ 32, φ 4 and φ 5.
the wall thickness of the standard conduit is 1.6mm, which is suitable for pre-embedding and ceiling laying;
the wall thickness of nonstandard conduit is 1.2mm, etc., which is only suitable for ceiling laying.
connection mode:
JDG pipe-to-pipe connection: firstly, insert the catheter and the straight pipe joint tightly, and then continue to tighten the set screw with a set wrench until the "neck" is broken.
connection between p>JDG pipe and junction box: unscrew claw nut of threaded joint and place it on the inner wall of junction box, and use a tightening wrench to clamp the claw nut and hexagon nut inside and outside the junction box. Then connect the catheter with the other end of the threaded joint, and the process is the same as the connection between the catheter and the straight pipe joint.
2. Introduction of KBG tube:
KBG tube is also referred to as buckle thin-walled conductor tube. The conduit is made of high-quality cold-rolled strip steel, which is automatically welded by high-frequency welded pipe unit and galvanized on both sides. KBG pipe has uniform wall thickness, high welding roundness, good tolerance fit with pipe joint, small and round weld, and smooth nozzle edge.
There are six specifications: φ 16, φ 2, φ 25, φ 32, φ 4 and φ 5, the wall thickness is 1mm or 1.2mm respectively, and the ex-factory length of the catheter is 4 m..
connection mode:
KBG pipe-to-pipe connection: directly insert the catheter into the straight pipe joint or the elbow joint, and use the crimping pliers to buckle the joint.
connection between p>KBG pipe and junction box: firstly, connect the threaded joint with the junction box, then insert the catheter into the other end of the threaded pipe joint, and use crimping pliers to buckle the joint between the threaded pipe joint and the catheter.
Baidu Encyclopedia-KBG
Baidu Encyclopedia-—JDG Tube