A steamroller pipe is usually made of glass but can be made of silicone, plastic or other materials. These pipes have a long, straight cylinder from the bowl to the mouthpiece and have a much larger circumference than a sherlock or spoon pipe. Sometimes there is a raised bowl above the steamroller cylinder and sometimes it is depressed into the body of the cylinder. Due to the straight shape and large circumference of a steamroller pipe, they can generate massive hits and are more often used by seasoned smokers. Read this article to learn everything you need to know about steamroller pipes.