When cutting threads on a 1" steel pipe for a gas line, how many threads should be cut for each joint?

When cutting threads on a 1" steel pipe for a gas line, it is essential to ensure a proper fit and seal between joints to prevent any gas leaks. The standard practice for threading a 1" pipe is to cut at least 10 threads. This allows for sufficient engagement of the threads when the pipes are joined, which is crucial for maintaining the integrity of the gas line system.

Having 10 threads provides a good balance between strength and sealing ability. Too few threads, such as 5 or 7, may not provide enough grip when connecting pieces, which could lead to potential leaks. Cutting more than 10 threads, while it may seem like a way to enhance the connection, can actually lead to complications such as weakening of the pipe or difficulty in tightening the joint adequately. Therefore, cutting 10 threads is recognized as the optimal standard for ensuring a secure and reliable gas line connection.