Fire resistant air pipe welding td.hk.xh.03

Fire resistant air pipe welding td.hk.xh.03. Because the welding workshop, when the plumber will have the spark firing, so that can catch fire and cause the pipe welding in factories. Thus tree using special tube ignition, and durable enough to air welding. The projects were constructed such as the welding machine motor piajo, company MACHINO welding workshop, workshop welding company SYM,,,,