... Cold Roll and Seamless) Φ102-323×4022-25.40×≤6000 (Welding)4, Testing: NDT(nondestructive testing) 5, Application: heat exchange ... equipment including arrange heat exchanger, serpentine, heat exchanger, coiled pipe heat exchanger, condenser, and transport pipeline etc. Xi'an ... powder), ingot, bar/rod/strip, plate/sheet/slab, pipe/tube, forgings and wire according to the international standards, ...