The network of natural gas distribution pipelines in the United States is extensive. Consider, for example, that there are approximately 300,000 miles of gathering and transmission pipelines that convey natural gas from onshore and offshore sources to areas where it is processed to remove impurities. But there are 1.9 million miles of distribution pipelines that transport natural gas from treatment plants to residential and business consumers.
AMERICAN electric-resistance welded steel pipe, available in sizes ranging from 12 3/4 inches to 24 inches in diameter, has long been a part of the oil and natural gas landscape. AMERICAN was the first manufacturer to offer steel pipe in 100-foot lengths, the first to use dual-probe ultrasonic testing procedures and the first domestic ERW mill to supply HIC (hydrogen-induced cracking) resistant steel.