... .process :Butt-welded&Overlap 2.cold or hot water,gas series 3.ISO,CE,AENOR, EMI certificate 4.high quality,favourable price ... devices for buildings in northern, park, airport,and so on;3. Pipe used for solar energy water heater;4. Coal gas ... .525202.01.00-40°C~110°C26*3.026202.01.00-40°C~110°C32*3.032262.01.00-40°C~110 ...