Piping Material Specification
Standard No.... Doc. No....
Issue Date:.. Dec, 20197 of 15
Special Fabricated Larger Diameter Reducers
| Reducer O.D. |
A | B | Reducer O.D. |
A | B | |
| 26 x 24 | 24 | 1 | 40 x 32 | 24 | 4 | |
| 26 x 22 | 24 | 2 | 40 x 30 | 24 | 5 | |
| 26 x 20 | 24 | 3 | * 40 x 28 | 24 | 6 | |
| 26 x 18 | 24 | 4 | 42 x 40 | 24 | 1 | |
| 26 x 16 | 24 | 5 | 42 x 38 | 24 | 2 | |
| 28 x 26 | 24 | 1 | 42 x 36 | 24 | 3 | |
| 28 x 24 | 24 | 2 | 42 x 34 | 24 | 4 | |
| * 28 x 22 | 24 | 3 | 42 x 32 | 24 | 5 | |
| 28 x 20 | 24 | 4 | 42 x 30 | 24 | 6 | |
| 28 x 18 | 24 | 5 | 44 x 42 | 24 | 1 | |
| 30 x 28 | 24 | 1 | 44 x 40 | 24 | 2 | |
| 30 x 26 | 24 | 2 | 44 x 38 | 24 | 3 | |
| 30 x 24 | 24 | 3 | 44 x 36 | 24 | 4 | |
| * 30 x 22 | 24 | 4 | * 44 x 34 | 24 | 5 | |
| 30 x 20 | 24 | 5 | * 44 x 32 | 24 | 6 | |
| 32 x 30 | 24 | 1 | 46 x 44 | 28 | 1 | |
| 32 x 28 | 24 | 2 | 46 x 42 | 28 | 2 | |
| 32 x 26 | 24 | 3 | 46 x 40 | 28 | 3 | |
| 32 x 24 | 24 | 4 | 46 x 38 | 28 | 4 | |
| * 32 x 22 | 24 | 5 | * 46 x 36 | 24 | 5 | |
| * 32 x 20 | 24 | 6 | * 46 x 34 | 24 | 6 | |
| 34 x 32 | 24 | 1 | 48 x 46 | 28 | 1 | |
| 34 x 30 | 24 | 2 | 48 x 44 | 28 | 2 | |
| * 34 x 28 | 24 | 3 | 48 x 42 | 28 | 3 | |
| 34 x 26 | 24 | 4 | 48 x 40 | 28 | 4 | |
| 34 x 24 | 24 | 5 | * 48 x 38 | 24 | 5 | |
| 36 x 34 | 24 | 1 | * 48 x 36 | 24 | 6 | |
| 36 x 32 | 24 | 2 | 50 x 48 | 24 | 1 | |
| 36 x 30 | 24 | 3 | 50 x 46 | 24 | 2 | |
| * 36 x 28 | 24 | 4 | 50 x 44 | 24 | 3 | |
| 36 x 26 | 24 | 5 | 50 x 42 | 24 | 4 | |
| 36 x 24 | 24 | 6 | 50 x 40 | 24 | 5 | |
| 38 x 36 | 24 | 1 | 50 x 38 | 24 | 6 | |
| 38 x 34 | 24 | 2 | 50 x 36 | 24 | 7 | |
| 38 x 32 | 24 | 3 | 52 x 44 | 30 | 1 | |
| 38 x 30 | 24 | 4 | 52 x 42 | 30 | 2 | |
| 38 x 28 | 24 | 5 | 52 x 40 | 30 | 3 | |
| 38 x 26 | 24 | 6 | 52 x 38 | 30 | 4 | |
| 40 x 38 | 24 | 1 | 52 x 36 | 30 | 5 | |
| 40 x 36 | 24 | 2 | 52 x 50 | 30 | 6 | |
| 40 x 34 | 24 | 3 | 52 x 48 | 30 | 7 | |
| Reducer O.D. |
A | B | Reducer O.D. |
A | B | |
| 52 x 46 | 30 | 8 | 66 x 60 | 36 | 3 | |
| 54 x 52 | 30 | 1 | 66 x 54 | 36 | 6 | |
| 54 x 50 | 30 | 2 | 66 x 48 | 36 | 9 | |
| 54 x 48 | 30 | 3 | 66 x 42 | 36 | 12 | |
| 54 x 46 | 30 | 4 | 68 x 64 | 36 | 2 | |
| 54 x 44 | 30 | 5 | 68 x 60 | 36 | 4 | |
| 54 x 42 | 30 | 6 | 68 x 54 | 36 | 7 | |
| 54 x 38 | 30 | 8 | 68 x 48 | 36 | 10 | |
| 54 x 36 | 30 | 9 | 68 x 42 | 36 | 13 | |
| 54 x 34 | 30 | 10 | 70 x 66 | 42 | 2 | |
| 54 x 32 | 30 | 11 | 70 x 60 | 42 | 5 | |
| 54 x 30 | 30 | 12 | 70 x 54 | 42 | 8 | |
| 56 x 54 | 30 | 1 | 70 x 48 | 42 | 11 | |
| 56 x 52 | 30 | 2 | 70 x 42 | 42 | 14 | |
| 56 x 50 | 30 | 3 | 72 x 66 | 42 | 3 | |
| 56 x 48 | 30 | 4 | 72 x 60 | 42 | 6 | |
| 56 x 46 | 30 | 5 | 72 x 54 | 42 | 9 | |
| 56 x 44 | 30 | 6 | 72 x 48 | 42 | 12 | |
| 56 x 42 | 30 | 7 | 72 x 42 | 42 | 15 | |
| 58 x 56 | 30 | 1 | 78 x 72 | 48 | 3 | |
| 58 x 54 | 30 | 2 | 78 x 66 | 48 | 6 | |
| 58 x 52 | 30 | 3 | 78 x 60 | 48 | 9 | |
| 58 x 48 | 30 | 5 | 78 x 54 | 48 | 12 | |
| 58 x 44 | 30 | 7 | 78 x 48 | 48 | 15 | |
| 58 x 42 | 30 | 8 | 84 x 78 | 48 | 3 | |
| 60 x 56 | 30 | 2 | 84 x 72 | 48 | 6 | |
| 60 x 54 | 30 | 3 | 84 x 66 | 48 | 9 | |
| 60 x 52 | 30 | 4 | 84 x 60 | 48 | 12 | |
| 60 x 48 | 30 | 6 | 84 x 54 | 48 | 15 | |
| 60 x 42 | 30 | 9 | 84 x 48 | 48 | 18 | |
| 62 x 58 | 30 | 2 | 90 x 84 | 48 | 3 | |
| 62 x 54 | 30 | 4 | 90 x 78 | 48 | 6 | |
| 62 x 52 | 30 | 5 | 90 x 72 | 48 | 9 | |
| 62 x 48 | 30 | 7 | 90 x 66 | 48 | 12 | |
| 62 x 44 | 30 | 9 | 90 x 60 | 48 | 15 | |
| 64 x 60 | 36 | 2 | 96 x 90 | 48 | 3 | |
| 64 x 56 | 36 | 4 | 96 x 84 | 48 | 6 | |
| 64 x 54 | 36 | 5 | 96 x 78 | 48 | 9 | |
| 64 x 52 | 36 | 6 | 96 x 72 | 48 | 12 | |
| 64 x 48 | 36 | 8 | 96 x 66 | 48 | 15 | |
| 64 x 42 | 36 | 11 |
Notes..
- All dimensions are given in Inches.
- These reducers are to be used only when authorized by the piping spec's for the job.
- Material shall be as specified in the job piping materials specification class.
- Welding shall be in accordance with the job specifications.
- Alloy material;s over 1/8" thk. and carbon steel materials 3/16" thk. and over shall have ends beveled for welding in accordance with ASME B16.25 standard.
- Reducers marked with asterisk ( * ) and 50" and higher are not ASME B16.9.
Other Pages
- Table of contents
- Scope, codes, standards and references
- General and specific requirements
- Abbreviations for piping specifications
- Valve tag numbering
- Standard installation detail - Utility Station
- Special fabricated larger diameter reducers
- Four weld 90° LR Miter elbow
- Two weld 45° LR Miter elbow
- Perforated temporary conical strainers
- T-Type strainers
- Drip ring
- Product sampler cooler
- Tolerances for pipe fabrication
- Line Blinds NPS 1/2 - NPS 60