I always will not use the wire, please help out ~
Socket-type thin-walled steel pipe, referred to as KBG tube. The pipe is made of high quality cold-rolled strip steel, made by high-frequency welded pipe unit automatic weld, double-sided galvanized. Pipe wall thickness uniformity, winding roundness is high, with the pipe joint with a good tolerance, small and round the weld, the edge of the mouth smooth. There are Φ. Φ. Φ. Φ. Φ. Φ50 six specifications, the specific model size see the table below.
There is an extension of the line, to buy one, or find a business for a long enough power
Do not have sets, with some sand buried on the line covered with a layer of brick
