Carbon Steel Seamless Pipe to ASTM A106/A53

http://www.honrypipe.com/254/carbon_steel_seamless_pipe.html

Cold Drawn Steel Pipes Size/Range:1/2"~4" Seamless Pipe
Hot Rolled Steel Pipes Size/Range:1/2"~12" Seamless Pipe
Hot Expand Steel Pipes Size/Range:12"~24" Seamless Pipe
Seamless carbon steel pipe,no longitudinal weld seam,one solid homogeneous piece of steel.A solid billet is simply heated and then stretched over a series of mandrels until the pipe has achieved its desired diameter（21mm~610mm） and wall thickness(2mm~60mm). 
Typically seamless carbon steel pipe fourteen inches and greater in diameter are rolled from shells which expand the diameter and reduce the wall until the desired dimensions are achieved. Sizes smaller than fourteen inches in diameter are typically stretch reduced whereby the diameter is gradually reduced and the wall relatively increased via a series of rolls. There is also a cold forming process for seamless pipe production, but such manufacturing processes are typically reserved for different alloys. Being that there is no seam