Combined with copper outer tubes, carbon steel inner tubes, precision machined gasket surfaces, and fully expanded tube depth, this design assures efficient, dependable performance.
镀铜外管、碳钢内衬管、精密加工的密封垫表面以及全扩展的管深度，保证了高效和稳定的性能。
Combined with copper outer tubes, carbon steel inner tubes, precision machined gasket surfaces, and fully expanded tube depth, this design assures efficient, dependable performance.
镀铜外管、碳钢内衬管、精密加工的密封垫表面以及全扩展的管深度，保证了高效和稳定的性能。
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