ASME B16.11 is a standard issued by the American Society of Mechanical Engineers, which specifies the technical requirements for threaded and welded pipe fittings for piping systems. This standard includes fittings such as Elbows, Tees, Couplings, Caps and other fittings.
Nominal Size (NPS) |
Outer diameter (D) (mm) |
Length (L1) (mm) |
Length (L2) (mm) |
Thickness (S) (mm) |
---|---|---|---|---|
1/2 inch |
21.3 |
38 |
21 |
3.73 |
3/4 inch |
26.7 |
46 |
25 |
3.91 |
1 inch |
33.4 |
56 |
29 |
4.55 |
1 1/4 inches |
42.2 |
62 |
33 |
4.85 |
1 1/2 inches |
48.3 |
75 |
38 |
5.08 |
2 inches |
60.3 |
84 |
44 |
5.54 |
2 1/2 inches |
73.0 |
95 |
51 |
7.01 |
3 inches |
88.9 |
106 |
57 |
7.62 |
4 inches |
114.3 |
126 |
64 |
8.56 |
Note:
For sizes greater than 4 inches, other standards should be consulted and other connection methods appropriate to the specific pressure and application should be used. These standards include:
Material Type | Material Code (ASTM Standard) | Main Features | Popular Applications |
---|---|---|---|
Carbon steel | ASTM A105 | High durability, good pressure and temperature resistance | Oil and gas, chemical, construction, water systems |
Stainless Steel | ASTM A182 (F304/F316) | Anti-corrosion, good heat resistance | Food, pharmaceutical, chemical industry |
Copper | ASTM B61/B62 | Good corrosion resistance, easy to process | Plumbing, HVAC, Marine Industry |
Bronze | ASTM B584 (C83600/C84400) | Good corrosion resistance, high durability | Water system, chemical industry |
Alloy steel | ASTM A182 (F11/F22) | High durability, good heat and pressure resistance | Energy, petrochemical, power plant industry |
Cast iron | ASTM A536 | Easy to cast, low cost, high durability | Water supply and drainage system, heavy industry |
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