Product category: stainless steel coil pipe standards: ASTM A249, GB/T24593-2009, JISG3459, EN 10217, DIN 17457 welding methods: argon arc welding uses: tube annealing temperature for boiler and heat exchanger: 1040-1150 degrees Celsius hydraulic test: 3Mpa online eddy current detector to monitor the entire process, according to customer drawings production