This black steel pipe is designed for commercial and residential use, with a superior rough coating and male (NPT) National Pipe Thread. It can be used indoors for low pressure plumbing applications such as water, oil, natural gas, LP, steam, and air. Manufactured using advanced technology, this pipe is durable and meets ASTM and ANSI technical specifications. To prevent damage during transport, it is shipped with plastic end caps. In addition to its functional uses, this pipe can also add an industrial feel to room decor, furniture, shelves, and accessories.