1.Scope：ASME B16.9,This Standard covers overall dimensions,tolerances,ratings,testing,and markings for factory-madewrought buttwelding fittings in sizes NPS ? through NPS 48 (DN15 through DN1200).
2.Pressure Rating Designation：150、300、600、900、1500、2500Class;
3.Materials：WPB、WPC、WP1、WP12 CL1、WP12 CL2、WP11 CL1、WP11 CL2、WP11 CL3、WP22 CL1、WP22 CL3、WP5 CL1、WP5 CL3、WP9 CL1、WP9 CL3、WPR、WP91、WP911；
4.Dimensions：?-21.3、?-26.7、1-33.4、1?-42.4、1?-48.3、2-60.3、2?-73.0、3-88.9、3?-101.6、4-114.3、5-141.3、6-168.3、8-219.1、10-273.0、12-323.8、14-355.6、16-406.4、18-457.0、20-508.0、22-559.0、24-610.0、26-660.0、28-711.0、30-762.0、32-813.0、34-864.0、36-914.0、38-965.0、40-1016.0、42-1067.0、44-1118.0、46-1168.0、48-1219.0；
5.Dimensions of Long Radius Elbows、Dimensions of Long Radius Reducing Elbows、Dimensions of Long Radius Returns、Dimensions of Short Radius Elbows、Dimensions of Short Radius 180-deg Returns、Dimensions of 3D Radius Elbows、Dimensions of Straight Tees and Crosses、Dimensions of Reducing Outlet Tees and Reducing Outlet Crosses、Dimensions of Lap Joint Stub Ends、Dimensions of Caps、Dimensions of Reducers
