Fittings are made to high standards of quality,air pressure tested and care.  We can produce class 150LB and class 300LB malleable iron threaded fittings.
Available of class 150LB:1/8"~6"
Available of class 300LB:1/4"~4"

American standard： Material:ANSI/ASTM A197
Demensions:ANSI/ASTM B16.3,B16.39,B16.14 
Threads:ANSI/ASTM B1.20.1(NPT) 

British Standard： Material:ISO5922 
Demensions:ISO49 
Threads:ISO7/1（BSPT)

Surface treatment:Black or Hot dipped galvanizing