Seamless Steel Pipe

　　Steel pipes are classified into two types: seamless steel pipes and welded steel pipes according to their manufacturing methods. The seamless steel pipe is made of high-quality carbon steel or alloy steel and has hot rolling and cold rolling (extraction). The welded steel pipe is formed by welding a steel plate rolled into a tubular shape by a seam or a spiral seam. In terms of the manufacturing method, it is further divided into a welded steel pipe for low-pressure fluid transportation, a spiral-welded electric steel pipe, a direct-wound welded steel pipe, an electric welded pipe, and the like. Seamless steel tubes can be used in a variety of liquids, gas pipelines, and the like. Welded pipes can be used for water pipes, gas pipes, heating pipes, etc. 　 　1. Welded steel pipe 　　1.1 Welded steel pipe and galvanized welded steel pipe for low pressure fluid transportation 　　The welded steel pipe for low-pressure fluid transportation is made of carbon soft steel. It is the most com...

　　Most people think that any natural gas pipe can be used for gas. This certainly isn’t the case. The size of the pipe dictates the amount of gas that can pass along the pipe. It’s also worth noting that the longer the pipe, the lower the flow (be aware that the flow of gas is measured in BTUs (British Thermal Units) per hour. If you’re going to be working with natural gas it’s important to be familiar with the sizes of natural gas pipes and the amount of gas that can pass along them for different lengths. 　 　Nominal Size 　　The nominal size of the natural gas pipe is actually the exterior size. This is generally used as a reference for the pipe, although the interior size of the pipe is less. For instance, pipe with a nominal size of one inch will have an interior size of just under ? inch (actually .49 inches). 　　 Pipe Length 　　The length of the pipe will have a deep influence on the amount of gas that can flow through it. Where a pipe has a nominal size of one inch, the flow ...