Yansheng Yin

Copper and aluminium connecting tubes with hard sleeve and method for making same

Welded joint of thin wall copper aluminum pipe with no eutectic structure, and preparation method

Connecting structure of thin-wall copper pipe and thin-wall aluminum pipe

Method for preparing cuprum aluminum complex structure metallic can

Refrigeration pipe composed of copper elbow and U pipe of aluminum, and preparation method

Inner diameter of copper aluminum joint, copper aluminum joint with diameter being equal to inner diameter of aluminum pipe, and preparation method

Processing method for multicolor thermal shrinkage tube

Counter bending copper-aluminium tube joint, method for producing same and special core rod

Composite nut construction used for multiple materials of copper and aluminum connecting pipe

Metal pipe thermal shrinkage anticorrosive coating automatic curing device