Forged Orifice Flanges
Carbon steel: Q235B · 20# · ASTM A36
Stainless steel: 304/316L · ASTM A182
Alloy steel: 16Mn · ASTM A694
- Product Introduction
Products Description
Forged Orifice Flanges are complete flange assemblies for fluid flow measurement, offering high accuracy and strength, suitable for pipeline systems in industries such as oil, natural gas, and chemicals that require precise flow control.
Manufacturing Process
Raw Materials: ASTM A105/A182 stainless steel forgings are selected, with each furnace undergoing spectral analysis.
Forging/Forming: High-temperature forging ensures refined grains and a dense microstructure, guaranteeing pressure-bearing performance.
Machining: CNC turning of orifice slots, bolt holes, and sealing surfaces ensures metrological accuracy requirements.
Inspection and Testing: Dimensional inspection, material reports, hardness testing, and sealing surface inspection ensure compliance with ASME B16.36 standards.
Customizable Range
Specifications: DN15–DN1200; Class 150–2500; Compatible with annular, planar, and RTJ types
Materials: A105, 304, 316, 316L, F51 (2205), F53 (2507)
Structure: Orifice Flange, Orifice Union, with or without pressure ring
Surface Treatment: Rust-preventive oil, sandblasting, galvanizing, special anti-corrosion coating
Packaging and Transportation
Rust Prevention: The entire container is coated with rust-preventive oil and protected with a sealing cap before leaving the factory.
Collision Resistance: Each set is individually packaged to prevent damage to the perforated plate groove and sealing surface.
Container Loading Safety: Containers are layered according to weight to prevent tipping and crushing.
Transportation Methods: Sea, air, and land transport are all available. Container loading photos and tracking information are provided.
Why Choose Us
20+ years of experience in forged flange manufacturing, specializing in Orifice Flanges, with an annual production capacity exceeding 8,000 tons.
End-to-end forging + CNC precision machining, achieving a critical dimensional pass rate of ≥99.5%.
Compliant with ASME B16.36 / B16.5 / EN / DIN standards, capable of rapid mass production and non-standard customization.
Furnace-by-furnace material inspection + 100% inspection system, ensuring 100% quality traceability.
Core advantages of the product
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Advantages |
Technical value |
Engineering benefits |
|
Costs cut by 35% |
No neck structure · Streamlined materials · high efficiency in mass production |
Project procurement costs are significantly optimized |
|
Quick installation in 10 minutes |
Symmetrical bolt hole design · No need for butt welding bevels · Compatible with any pipe welding method |
Construction efficiency increased by 50% |
|
100% system compatibility |
Raised face (RF)/Full plane (FF) seal · Match all standard gaskets |
Old system renovation/new project universal |
|
Adaptation to extreme environments |
Temperature range -30 ° C to 300 ° C · Surface galvanized/epoxy anti-corrosion |
Basement/damp environment maintenance-free for a long time |
Authoritative technical specifications
1. Basic parameters
|
Items |
Specification range |
|
Nominal diameter |
DN15 to DN2000 (½ "to 80") · Extra-large size supports non-standard customization |
|
Pressure rating |
PN6 | PN10 | PN16 | PN25 | PN40 (Chinese standard) |
|
Sealing surface type |
Raised face (RF) | Full Plane (FF) | Concave-convex face (MFM) |
|
enforce standards |
GB/T 9119 | ASME B16.5 | EN 1092-1 | JIS B2220 |
2. Materials and Craftsmanship
|
Category |
Options Details |
|
Main material |
Carbon steel: Q235B · 20# · ASTM A36 |
|
Manufacturing process |
Laser cutting (tolerance ±0.5mm) → CNC drilling machine (hole spacing error ±0.1mm) → Sealing surface turning (Ra≤6.3μm) |
3. Critical dimension table (GB/T 9119 PN16 RF example)
|
DN |
Outer diameter (D) |
Center circle of bolt hole (K) |
Thickness (C) |
Bolt hole count (n) |
|
50 |
165mm |
125mm |
18mm |
4 |
|
200 |
340mm |
295mm |
24mm |
8 |
FAQ
Q: Which standards are followed?
A: ASME B16.36, ASME B16.5, EN/DIN; non-standard options available.
Q: Pressure rating and material?
A: Class 150–2500; A105, 304, 316, duplex stainless steel, etc.
Q: Can orifice plate grooves and diameters be customized?
A: All orifice plate dimensions can be machined according to drawings.
Q: MOQ?
A: Standard 50–100 sets; non-standard minimum order 1 set.
Q: Testing reports?
A: MTC 3.1, spectral analysis, and dimensional reports are provided.
Q: Lead time?
A: Standard 7–10 days; non-standard 12–18 days.
Q: Quality assurance?
A: Full inspection of forged materials + CNC precision machining + full inspection of critical dimensions.
Q: How is damage prevented during transportation?
A: Sealed surface protection, layered packaging, reinforced wooden crates, and photographic confirmation of loading.
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