... :NPT threads 5.Standard,Heavy series Elbow 90 degree
3/
8 inch, NPT, Galvanized Malleable Iron Shijiazhuang Jizhong Malleable ... tee, nipple, socket, union, cross over, flange, round cap
and so on, in which the thread are of British standard, American standard ... ASME B1.20.1Mechanical properties:Tensile Strength≥33kg/mm2Elongatin≥
8%Hardness