Product Information Thread: NPT Select a Product Part NumberMaterialThread Size SE45300150# Iron3" SE45150G150# Galvanized Iron1-1/2" SE45250150# Iron2-1/2" SE45300G150# Galvanized Iron3" SE4550G150# Galvanized Iron1/2" SE45125150# Iron1-1/4" SE4525150# Iron1/4" SE4538150# Iron3/8" SE45100150# Iron1" SE4518150# Iron1/8" SE45400150# Iron4" SE4575150# Iron3/4" SE45200150# Iron2" SE4525G150# Galvanized Iron1/4" SE45400G150# Galvanized Iron4" SE4575G150# Galvanized Iron3/4" SE45200G150# Galvanized Iron2" SE45150150# Iron1-1/2" SE4550150# Iron1/2" SE45250G150# Galvanized Iron2-1/2" SE45125G150# Galvanized Iron1-1/4"