Hello Mr. Zhang, the sewer pipe on the second floor is on the top of my kitchen, and the pipe is cas

If it doesn't work, you can use sandpaper, sawyman, lead to find the leakage, and smash the lead.

Cast iron water pipe leakage is not good welding. Second, it will not be thoroughly treated with cement or other materials. It is necessary to customize a special plugging fixture according to the specific part of the leakage, and then match the special plugging material to deal with it thoroughly.

Waterproof mortar is used on the concrete surface as a foundation waterproof! It cannot be used on water pipes. In this case, there should be cracks and holes in the welding part, you first confirm the water leakage point, and use the house doctor steel soil or magic plastic steel to wipe directly on the water leakage point, you can.

Waterproof mortar is used for waterproof leakage repair of cement structure, it may be that after the water pipe is seriously rusted, cracks in the material cause water leakage, it is recommended to find the leakage part, directly saw off that small section, and replace it with a new one.