ASME Standards

This Standard covers design, material, manufacturing,testing, marking, and inspection requirements for factory-made pipeline bends of carbon steel materials having controlled chemistry and mechanical properties,produced by the induction bending process, with or without tangents. This Standard covers induction bends for transportation and distribution piping applications (e.g., ASME B31.4, B31.8, and B31.11). Process and power piping have […]

This Standard covers pressure–temperature ratings,materials, dimensions, tolerances, marking, and testing for operating line blanks in sizes NPS 1 ∕ 2 through NPS 24 for installation between ASME B16.5 flanges in the 150, 300, 600, 900, 1500, and 2500 pressure classes.

(a) This Standard covers manually operated thermo-plastic valves in nominal valve sizes 1 ∕2 through 12.These valves are intended for use below ground in ther-moplastic fuel gas distribution mains and service lines.The maximum operating pressure (MOP) at which such distribution piping systems may be operated is in accordance with Transportation of Natural and Other Gas

(a) This Standard covers manually operated thermo-plastic valves in nominal valve sizes 1 ∕2 through 12. These valves are intended for use below ground in ther-moplastic fuel gas distribution mains and service lines.The maximum operating pressure (MOP) at which such distribution piping systems may be operated is in accordance with Transportation of Natural and Other

This Standard covers pressure–temperature ratings,materials, dimensions, tolerances, testing, and making of flanges (similar to those covered in ASME B16.5) that have orifice pressure differential connections. Coverage is limited to the following: (a) welding neck flanges Classes 300, 400, 600, 900,1500, and 2500 (b) slip-on and threaded Class 300

This Standard applies to new construction and covers pressure-temperature ratings, dimensions, tolerances,materials, nondestructive examination requirements,testing, and marking for cast, forged, and fabricated flanged, threaded, and welding end and wafer or flangeless valves of steel, nickel-base alloys, and other alloys shown in Table 1. Wafer or flangeless valves, bolted or through-bolt types, that are installed between

This Standard for cast iron threaded drainage fittings covers (a) sizes and method of designating openings in reduc-ing fittings (b) marking (c) material (d) dimensions and tolerances (e) threading (f) ribs (g) coatings (h) face bevel

This Standardcovers Classes 25, 125, and250 GrayIron Pipe Flanges and Flanged Fittings. It includes (a) pressure–temperature ratings (b) sizes and method ofdesignatingopenings ofreduc-ing fittings (c) marking (d) materials (e) dimensions and tolerances (f) bolting and gaskets (g) pressure testing

(a) This Standard notes technical factors that can explain measurement differences between two parties calibrating the same gage. It is directed to the metrology involved, not acceptance rules or other quality considerations. (b) While measurement uncertainty applies to the cali-bration of gages to any standard, this Standard focuses on gages made to ASME standards only.

This Standard specifies the thread form, series, class,allowance, tolerance, and designation for unified screw threads. (In order to emphasize that unified screw threads are based on inch modules, they may be denoted unified inch screw threads.) Several variations in thread form have been developed for unified threads; however, this Standard covers only UN, UNR,and UNJ