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| Quantity: | |
|---|---|
TH Flange
SDFL
| Nominal Size | Outer Diameter | Central circle diameter | Bolt Hole Diameter | Number of Bolt Holes | Inner Diameter | Flange Ring Height | Weld Groove Diameter | Flange Overall Height | Sealing Face Diameter | Sealing Face Height | |
| DN | NPS | A | J | I | E | Ｃ | Ｆ | D | G | ||
| 15 | 1/2 | 120.6 | 82.6 | 22.4 | 4 | 17 | 22.4 | 38.1 | 31.7 | 35.1 | 6.4 |
| 20 | 3/4 | 130 | 88.9 | 22.4 | 4 | 22.5 | 25.4 | 44.4 | 35 | 42.9 | 6.4 |
| 25 | 1 | 149.3 | 101.6 | 25.4 | 4 | 29 | 28.4 | 52.3 | 41.1 | 50.8 | 6.4 |
| 32 | 1-1/4 | 158.7 | 111.3 | 25.4 | 4 | 37.5 | 28.4 | 63.5 | 41.1 | 63.5 | 6.4 |
| 40 | 1-1/2 | 177.8 | 124 | 28.4 | 4 | 43.5 | 31.7 | 69.85 | 44.5 | 73.15 | 6.4 |
| 50 | 2 | 215.9 | 165.1 | 25.4 | 8 | 55 | 38.1 | 104.6 | 57.15 | 91.9 | 6.4 |
| 65 | 2-1/2 | 244.3 | 190.5 | 28.4 | 8 | 71 | 41.1 | 123.9 | 63.5 | 104.6 | 6.4 |
| 80 | 3 | 241.3 | 190.5 | 25.4 | 8 | 83.5 | 38.1 | 127 | 53.8 | 127 | 6.4 |
| 100 | 4 | 292.1 | 234.9 | 31.7 | 8 | 108.5 | 44.4 | 158.7 | 69.85 | 157.2 | 6.4 |
| 125 | 5 | 349.2 | 279.4 | 35 | 8 | 134 | 50.8 | 190.5 | 79.25 | 185.7 | 6.4 |
| 150 | 6 | 381 | 317.5 | 31.7 | 12 | 159.5 | 55.6 | 234.9 | 85.8 | 215.9 | 6.4 |
Application scenario material description
(1) Compliant with ANSI B16.5, ASME B16.47, DIN, JIS and other standards to ensure interchangeability.
Diverse materials:
(1) Stainless steel (304/316/316L): corrosion-resistant, suitable for the chemical and food industries.
(2) Carbon steel (A105): economical and durable, suitable for general industrial pipelines.
(3) Alloy steel (F11/F22): resistant to high temperature and high pressure, suitable for the power industry.
Core definitions and standard specifications
The ANSI 900LB TH flange is a high-pressure threaded neck flange that strictly complies with the ASME B16.5 standard. The key features are as follows:
Pressure rating: Class 900LB (corresponding to PN15~PN65, approximately 15.3MPa)
Connection method: The flange neck has internal threads (NPT/BSPT), which are directly screwed into the external threads of the pipeline
Sealing surface type:
Convex surface (RF): standard, metal gasket (such as wrapped gasket) is required
Ring Connection Surface (RTJ): Used for extreme high pressure conditions (special order required)
| Nominal Size | Outer Diameter | Central circle diameter | Bolt Hole Diameter | Number of Bolt Holes | Inner Diameter | Flange Ring Height | Weld Groove Diameter | Flange Overall Height | Sealing Face Diameter | Sealing Face Height | |
| DN | NPS | A | J | I | E | Ｃ | Ｆ | D | G | ||
| 15 | 1/2 | 120.6 | 82.6 | 22.4 | 4 | 17 | 22.4 | 38.1 | 31.7 | 35.1 | 6.4 |
| 20 | 3/4 | 130 | 88.9 | 22.4 | 4 | 22.5 | 25.4 | 44.4 | 35 | 42.9 | 6.4 |
| 25 | 1 | 149.3 | 101.6 | 25.4 | 4 | 29 | 28.4 | 52.3 | 41.1 | 50.8 | 6.4 |
| 32 | 1-1/4 | 158.7 | 111.3 | 25.4 | 4 | 37.5 | 28.4 | 63.5 | 41.1 | 63.5 | 6.4 |
| 40 | 1-1/2 | 177.8 | 124 | 28.4 | 4 | 43.5 | 31.7 | 69.85 | 44.5 | 73.15 | 6.4 |
| 50 | 2 | 215.9 | 165.1 | 25.4 | 8 | 55 | 38.1 | 104.6 | 57.15 | 91.9 | 6.4 |
| 65 | 2-1/2 | 244.3 | 190.5 | 28.4 | 8 | 71 | 41.1 | 123.9 | 63.5 | 104.6 | 6.4 |
| 80 | 3 | 241.3 | 190.5 | 25.4 | 8 | 83.5 | 38.1 | 127 | 53.8 | 127 | 6.4 |
| 100 | 4 | 292.1 | 234.9 | 31.7 | 8 | 108.5 | 44.4 | 158.7 | 69.85 | 157.2 | 6.4 |
| 125 | 5 | 349.2 | 279.4 | 35 | 8 | 134 | 50.8 | 190.5 | 79.25 | 185.7 | 6.4 |
| 150 | 6 | 381 | 317.5 | 31.7 | 12 | 159.5 | 55.6 | 234.9 | 85.8 | 215.9 | 6.4 |
Application scenario material description
(1) Compliant with ANSI B16.5, ASME B16.47, DIN, JIS and other standards to ensure interchangeability.
Diverse materials:
(1) Stainless steel (304/316/316L): corrosion-resistant, suitable for the chemical and food industries.
(2) Carbon steel (A105): economical and durable, suitable for general industrial pipelines.
(3) Alloy steel (F11/F22): resistant to high temperature and high pressure, suitable for the power industry.
Core definitions and standard specifications
The ANSI 900LB TH flange is a high-pressure threaded neck flange that strictly complies with the ASME B16.5 standard. The key features are as follows:
Pressure rating: Class 900LB (corresponding to PN15~PN65, approximately 15.3MPa)
Connection method: The flange neck has internal threads (NPT/BSPT), which are directly screwed into the external threads of the pipeline
Sealing surface type:
Convex surface (RF): standard, metal gasket (such as wrapped gasket) is required
Ring Connection Surface (RTJ): Used for extreme high pressure conditions (special order required)
