To judge whether the water pipe of the automobile auxiliary kettle is wear-resistant, it can be evaluated by the following methods:

1. Visual inspection: First, you can observe the appearance of the water pipe with naked eyes to check whether there are obvious wear marks or worn parts. If there are obvious wear, wear marks or wear areas on the surface of the water pipe, it may indicate that the water pipe has been greatly worn.

2. Hand feel inspection: Touch the surface of the water pipe gently to feel the smoothness and flatness of the water pipe. If the surface of the water pipe feels uneven and has obvious sense of wear, it may indicate that the water pipe has been worn.

3. Bending inspection: You can try to bend the water pipe gently and observe whether there is crack or deformation in the water pipe. If the water pipe is cracked or deformed during bending, it may indicate that the wear resistance of the water pipe is not good.

4. Service life: Evaluate the wear resistance of water pipes according to their service time and mileage. Generally speaking, water pipes used for a long time may have good wear resistance if there are no obvious signs of wear or aging.

5. Brand and quality: Choose well-known brands and reliable water pipe products, which usually have good wear resistance. You can refer to the experience and evaluation of other users and choose water pipe products with good wear resistance.

To sum up, judging whether the water pipe of automobile auxiliary kettle is wear-resistant can be evaluated by visual inspection, hand inspection, bending inspection, service life and brand quality. Choosing a water pipe with good wear resistance can ensure that the water pipe is not easy to be worn during long-term use and maintain stable and reliable performance.