Jul 11, 2005 #1 4fletch Materials Joined Jan 16, 2003 Messages 17 Location US Found this specification/grade in a 1950's Pipe Specification Table and was curious what significance the "52aT" had. Anyone know? Thanx in advance.
Found this specification/grade in a 1950's Pipe Specification Table and was curious what significance the "52aT" had. Anyone know? Thanx in advance.