Inquiry (采购产品): OSHA approved air line I am looking for piping or tubing we can use from an air compressor to work stations. It needs to be OSHA approved and the runs may be 150 feet from the compressor with drops to work stations. I am guessing the pipe needs to be about 1" from the compressor and the drops 3/8 to 1/2". **** Hidden Message ***** Dan Rivard 55014 Company: Karl Dungs Inc. E-mail: drivard@karldungsusa.com **** Hidden Message ***** drivard@karldungsusa.com