12" x 20' Corrugated Single Wall Solid Pipe. Single wall pipe collects and conveys drainage water by open gravity and is recommended for use where drainage water is free of debris and floating material.Springfield Plastics, Inc. single wall pipe is manufactured for underground drainage applications where soil support is given to the flexible walls. The use of single wall plastic pipe is only recommended where drainage water is free of debris and floating material. Its major use is to collect and convey drainage water by open gravity. The plastic pipe is manufactured to the highest quality control standards only using high quality virgin high-density polyethylene. The plastic pipe meets or exceeds the following specifications: ASTM F405-13, ASTM F667-12, AASHTO M252, AASHTO M294.