Commodity:JIS and DIN standard hot Galvanized steel pipes Material:Q195/Q235/Q345 ... petroleum,power,gas metallurgy,papermaking,chemical,medical equipment,aviation,boiler heat,exchanger,shipbuilding,construction,etc.9)addition:1.special design available according ... to requirement.2.anti-corrosion and high-temperature resistand with black painting.3.all the production ...