Bri-Chem, a leading North American wholesale distributor and manufacturer of oil and gas drilling fluids and steel pipe and piping products has successfully produced 36" seamless pipe, which is the North America's largest diameter seamless pipe. The company said that this 36" pipe has a standard thickness, which is the most difficult in using the thermal expansion manufacturing process. Currently, the company can concentrate on producing more than 36" in diameter steel pipe, while expanding the production capacity of 32"-34" pipes.
Source:
http://www.yieh.com/2.2.01.01stainlesssteelnews.aspx?no=65034&division=A9