Steel pipe inner wall painting device

The utility model provides a steel pipe inner wall painting device which comprises a paint bucket, a first pipeline, a second pipeline and a paint recovery tank, and a paint outlet is formed in the side wall of the paint bucket; the first end of the first pipeline is connected to the paint outlet, the second end of the first pipeline is connected with the first end of a steel pipe, and the interior of the first pipeline is communicated with the interior of the steel pipe; a through hole is formed in the side wall of the paint recycling groove, the second end of the steel pipe is inserted intothe through hole, the height of the through hole is smaller than that of the paint outlet, the steel pipe is obliquely arranged, and the first end of the steel pipe is higher than the second end of the steel pipe. According to the device, workers are prevented from making direct contact with antirust paint for a long time, long-time harm of harmful gas to the workers and pollution to the environment are avoided, the paint