ASME B16.36 Orifice Flange Manufacturer
Shribhairav Forge manufactures high-quality orifice flanges, which are specialized flanges used in piping systems to measure the flow rate of liquids, gases, or steam. They are designed to hold an orifice plate between two flanges, which creates a pressure drop as fluid passes through the plate. By measuring the differential pressure across the orifice plate, engineers can calculate the flow rate of the fluid in the pipeline. Orifice flanges are commonly manufactured according to the standard ASME B16.36 Orifice Flanges Standard, ensuring reliability and accuracy in industrial flow measurement applications.
One of the key features of orifice flanges is the presence of pressure tapping holes that allow instruments to measure differential pressure. These taps are typically threaded connections located on both sides of the flange and are connected to pressure gauges or transmitters. In addition, jack screw holes are provided to help separate the flanges safely when the orifice plate needs to be removed for maintenance or calibration.
These flanges typically include pressure tap holes drilled into the flange body to connect pressure gauges or transmitters. The taps are usually 1/2" NPT threaded connections located on the upstream and downstream sides of the orifice plate to measure differential pressure. Orifice flanges also have jack screw holes, which help separate the flanges easily during maintenance or when removing the orifice plate for inspection or replacement.
Orifice flanges are widely used in industries such as oil and gas, petrochemical plants, power generation, and water treatment facilities. They are available in different pressure classes (300 to 2500), sizes (1" to 24" NPS), and materials such as carbon steel, stainless steel, and alloy steel to suit different operating conditions. Their design ensures accurate flow measurement and easy installation in pipeline systems.
ASME B16.36 Orifice Flange Specification, Size, Grades, Standards:
| Parameter | Specification |
|---|---|
| Standard | ASME B16.36 |
| Flange Types | Orifice Weld Neck (WN), Orifice Slip-On (SO) |
| Nominal Pipe Size (NPS) | 1" – 24" |
| Pressure Classes | 300, 600, 900, 1500, 2500 |
| Facing Types | Raised Face (RF), Ring Type Joint (RTJ) |
| Bore Type | Concentric / Eccentric |
| Pressure Tap Size | 1/2" NPT |
| Pressure Tap Quantity | 2 (Upstream & Downstream) |
| Jack Screw Holes | Provided for plate removal |
| Compatible Pipe Standards | ASME B36.10, ASME B36.19 |
| Carbon Steel Grade | ASTM A105 |
| Low Temperature Steel | ASTM A350 LF2 |
| Stainless Steel Grades | ASTM A182 F304 / F316 |
| Alloy Steel Grades | ASTM A182 F11 / F22 |
| Application | Flow measurement using orifice plate in piping systems |
Chemical Composition of ASTM A182 Stainless Steel Flange
| Grade | C | Mn | Si | P | S | Cr | Ni | Mo |
|---|---|---|---|---|---|---|---|---|
| 304 | ≤0.08 | ≤2.0 | ≤1.0 | ≤0.045 | ≤0.030 | 18–20 | 8–11 | – |
| 304L | ≤0.035 | ≤2.0 | ≤1.0 | ≤0.045 | ≤0.030 | 18–20 | 8–13 | – |
| 304H | 0.04–0.10 | ≤2.0 | ≤0.75 | ≤0.045 | ≤0.030 | 18–20 | 8–10.5 | – |
| 310 | ≤0.25 | ≤2.0 | ≤1.5 | ≤0.045 | ≤0.030 | 24–26 | 19–22 | – |
| 316 | ≤0.08 | ≤2.0 | ≤1.0 | ≤0.045 | ≤0.030 | 16–18 | 10–14 | 2–3 |
| 316L | ≤0.035 | ≤2.0 | ≤1.0 | ≤0.045 | ≤0.030 | 16–18 | 10–14 | 2–3 |
| 316H | 0.04–0.10 | ≤2.0 | ≤1.0 | ≤0.045 | ≤0.030 | 16–18 | 10–14 | 2–3 |
| 316Ti | ≤0.08 | ≤2.0 | ≤0.75 | ≤0.045 | ≤0.030 | 16–18 | 10–14 | 2–3 |
| 317 | ≤0.08 | ≤2.0 | ≤1.0 | ≤0.045 | ≤0.030 | 18–20 | 11–15 | 3–4 |
| 321 | ≤0.08 | ≤2.0 | ≤1.0 | ≤0.045 | ≤0.030 | 17–19 | 9–12 | – |
| 347 | ≤0.08 | ≤2.0 | ≤1.0 | ≤0.045 | ≤0.030 | 17–19 | 9–13 | – |
| 904L | ≤0.02 | ≤2.0 | – | ≤0.045 | ≤0.030 | 19–23 | 23–28 | 4–5 |
Mechnical Properties of ASTM A182 Stainless Steel Flange
| Grade | Tensile Strength | Yield Strength | Elongation (min) | Hardness |
|---|---|---|---|---|
| 304 | ~75,000 psi / 515 MPa | ~30,000 psi / 205 MPa | ~35–40 % | ~201 HB |
| 304L | ~75,000 psi / 515 MPa | ~30,000 psi / 205 MPa | ~35–40 % | ~201 HB |
| 304H | ~75,000 psi / 515 MPa | ~30,000 psi / 205 MPa | ~40 % | ~201 HB |
| 310 / 310H | ~75,000 psi / 515 MPa | ~30,000 psi / 205 MPa | ~40 % | ~217 HB |
| 316 | ~75,000 psi / 515 MPa | ~30,000 psi / 205 MPa | ~35–40 % | ~217 HB |
| 316L | ~75,000 psi / 515 MPa | ~30,000 psi / 205 MPa | ~35–40 % | ~217 HB |
| 316H | ~75,000 psi / 515 MPa | ~30,000 psi / 205 MPa | ~40 % | ~217 HB |
| 316Ti | ~75,000 psi / 515 MPa | ~30,000 psi / 205 MPa | ~40 % | ~217 HB |
| 317 | ~75,000 psi / 515 MPa | ~30,000 psi / 205 MPa | ~40 % | ~217 HB |
| 321 | ~75,000 psi / 515 MPa | ~30,000 psi / 205 MPa | ~40 % | ~217 HB |
| 347 | ~75,000 psi / 515 MPa | ~30,000 psi / 205 MPa | ~40 % | ~217 HB |
| 904L | ~71,000 psi / 490 MPa | ~32,000 psi / 220 MPa | ~35 % | ~192 HB |
Different Types of Stainless Steel Flanges
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- sales@shribhairavforge.com
- +91 9969566209
- +91 22 6636 2333
- Plot 59, Dr M.G Marg, Mumbai - 400004, Maharashtra, India
- Shribhairav Metal Corporation