... welded&Overlap 2.cold or hot water,gas series 3.ISO,CE,AENOR, EMI certificate 4.high quality ... park, airport,and so on;3. Pipe used for solar energy water heater;4. Coal gas and ... within a certain district, pipe used for reclaimedwater project;6. Piped used for central air conditioner, fan coil;7 ... of vacuum;12. Tubes used in beverage factory for edible fluid transportation. Specification SIZE(MM)ID(MM ...