tank drain pipe

Use only ABS to patch it and only ABS cement.

Thanks for the replies. I haven't taken a close look at the pipe. I noticed a slow drip under the trailer from the gray water drain. It is a very small hole. Maybe I will try a patch to see if that does the trick.
Thanks again.

This is what I would do. :)

myredracer wrote:
The glue for gluing ABS to PVC is called "transition" cement.

It's hard to tell without a photo but if the hole isn't too large, I would try an ABS coupling. Cut it in half lengthwise and sand down the ridge inside. Then just glue it over the hole (ABS glue). The pipe will be standard 2" or 1 1/2" ABS.

How do you get a hole in that?

The glue for gluing ABS to PVC is called "transition" cement.

It's hard to tell without a photo but if the hole isn't too large, I would try an ABS coupling. Cut it in half lengthwise and sand down the ridge inside. Then just glue it over the hole (ABS glue). The pipe will be standard 2" or 1 1/2" ABS.

How do you get a hole in that?

Black pipe is ABS, and PVC cement will not bond correctly with it. They sell ABS cement for this purpose.

Just filling the hole with cement is not a good way to repair it. I'd suggest you do an internet search on "ABS pipe hole repair". There are lots of effective ways to perform this type of repair. Find one that applies to your situation and you should be good.

Is the drain pipe that needs repair an ABS pipe?
They do make an adhesive that can be used for both ABS and PVC but using two alike materials and the specific solvent weld glue is a better choice.