What are the design requirements for fastener type steel pipe scaffolds
Upstairs do not understand the air conditioning Oh, you can change the outdoor unit plus a four-way valve on it, the principle is very simple, the compressor is out of the hot air, do not change the valve outside the machine is hot air, To the valve to reverse the direction of the fluorine (the compressor does not change) the room can blow the hot air, of course, plus the valve if you say that and the performance of the TV and then follow the porphyry rescue Hanmer, But also for the circuit version, but not too much necessary. You put the valve to get a separate power plug, summer do not plug. Winter with the re-inserted, the need to defrost when the external machine unplug the plug. As for the cost of what, but also the best valve in the 100 yuan, cheap only 40 yuan or so, but also need to re-fluoride, fluoride costs and your local market, the general maintenance of the replacement valve costs 240 yuan Around (this is the air conditioning warranty settlement fee) only for reference. General maintenance points can be changed.
Fastener appearance quality requirements: there are cracks, deformation or bolt sliding wire fastener is strictly prohibited to use; 4 set up the template bracket with the steel pipe, fasteners, must be used before the sampling test, the number of sampling according to the relevant provisions of the implementation
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