As noted by Karren Brito in her book and blog, pipes for arashi shibori need to be of a material that can withstand the heat the poles are subjected to during discharging, dyeing, and steaming. At first I used the poles that could be found at local Home Depot stores. These were schedule 40 ABS pipes. After several uses though, the pipes begin to distort and make it very difficult to wrap effectively and with the desired results. According to Excaliber Extrusions:
Schedule 80 Polypropylene Pipe –
Polypropylene pipe is light weight but as strong and durable as high density Polyethylene. Polypropylene is excellent at high temperatures where thermoplastics such as PVC and Polyethylene cannot be used.
Polypropylene pipe has resistance to common reagents such as sulfuric acid, nitric acid, hydrochloric acid and caustic soda. Resistance to abrasion is very high.
Polypropylene pipe is not recommended to be used with strong oxidizing acids such as chlorinated hydrocarbons and aromatics.
So, I have finally invested in the proper pipes and should be receiving them next week. There are many sources for this material online and you need to determine which suits you best according to your location and the shipping charges that will apply.