Orifice Flange Assembly Supplier in Mumbai
The Metallurgy and Component Assembly Engineering
The industrial operational lifespan and calibration stability of a heavy-duty orifice flange assembly are determined by its specific metallurgical composition and the precision matching of its complete component package.
Chemical Composition and Multi-Grade Adaptability
Industrial flow loops demand a broad spectrum of material categories tailored to specific chemical, pressure, and temperature variables:
- Carbon Steel (ASTM A105 / A350 LF2): The industry standard for ambient to high-temperature configurations (A105), alongside specialized low-temperature lines (LF2) engineered to maintain exceptional notch toughness down to -46°C.
- Stainless Steel (ASTM A182 F304/L, F316/L): Austenitic formulations utilizing a rich chromium-nickel blend to form an immediate, self-healing passive oxide film, protecting assemblies against process fluids and chloride pitting.
- Alloy Steel (ASTM A182 F11, F22, F91): Chromium-molybdenum formulations that provide outstanding resistance to thermal creep and structural oxidation in high-temperature steam generation grids.
The Complete Orifice Assembly Component Package
A functional orifice configuration requires multiple tightly integrated hardware components supplied as a single calibrated package:
- The Orifice Flange Pair: Precision-forged matching flanges equipped with twin 1/2" NPT radial pressure taps and dual structural jack-screw holes used to separate the joints mechanically during plate inspection.
- The Orifice Plate: A high-purity, laser-cut metallic disc (typically SS316) featuring a precision-machined square-edge, concentric, or eccentric bore profile that acts as the primary fluid restriction barrier.
- Jack-Screws & High-Tensile Studs: Heavy-duty, heat-treated structural bolts used to secure the flanged faces under high torque loads, alongside specialized jack-screws to simplify line maintenance.
- Elastomeric / Metallic Gaskets: Precision-cut gaskets or soft iron Ring Type Joint (RTJ) rings configured to compress uniformly around the orifice plate profile.
Primary Orifice Flange Configurations and Structural Joint Styles
Depending on the system's velocity, wall thickness, and welding layout routing parameters, we manufacture orifice assemblies in distinct body styles:
- Weld Neck Orifice Flange (WNRF): Designed with a long, tapered structural hub that mirrors the pipe's internal wall schedule, shifting mechanical stress directly into the line. It is the premier choice for high-pressure, high-vibration processing manifolds.
- Slip-On Orifice Flange (SORF): Slides easily over the outside diameter of the pipe and is secured with dual internal and external structural fillet welds, making it highly cost-effective and straightforward to align in standard processing lines.
- Threaded Orifice Flange: Features internally machined tapered threads within its center bore, permitting tool-free assembly on low-pressure utility lines where field welding is restricted.
Dimensional and Material Specifications
Our production engineering strictly follows global dimensional codes to ensure hassle-free integration with global piping infrastructure and commercial flow meters.
| Parameter |
Specification Details |
| Design Standards |
ASME B16.36 (Governing code for orifice configurations), ASME B16.5, ISO 5167, DIN, EN 1092-1 |
| Material Specifications |
ASTM A105, ASTM A182, ASTM A350, ASTM A694, ASTM B564 |
| Pressure Classes |
Class 300, 600, 900, 1500, 2500 (Class 150 is typically avoided due to wall thickness limitations for tapping) |
| Pressure Tap Connections |
Dual 1/2" NPT Female Taps per flange (machined at 90° or 180° orientations) |
| Facing Types |
Raised Face (RF) with phonegraphic serrations, Ring Type Joint (RTJ) for extreme pressure |
| Size Range |
1" NB up to 24" NB under ASME B16.36 (Custom large-diameter dimensions up to 60" available) |
| Testing Regimens |
CMM Tap Layout Audit, Ultrasonic Hub check, Hydrostatic Pressure validation, LPT, PMI |
Driving B2B Procurement via an Authorized Flanges Dealer in Mumbai
For global engineering, procurement, and construction (EPC) firms managing large-scale refinery or process terminal projects, coordinating specialized flow metering joints is a precise task. Partnering with a dedicated distribution channel in Mumbai gives you a distinct operational edge.
We provide volume-based commercial discounts, comprehensive material traceability certifications (MTC EN 10204 3.1/3.2), and durable, sea-worthy packaging designed to prevent edge dents, thread cross-threading, or critical tap profile distortion during transport. Additionally, our sales engineers provide direct technical support to procurement teams, verifying bolt-circle dimensions, tap sizing, and wall-thickness compatibility to match project isometric data perfectly.
Orifice Flange Assembly Exporter in Mumbai
Fulfilling Global Contracts as a Top Flanges Exporter from Mumbai
Our focus on precision machining and zero-defect forging has earned strong international trust. Operating from the export hub of Mumbai, we regularly ship high-reliability orifice flange assemblies to natural gas processing hubs in the Middle East, high-pressure steam power plants in Europe, and chemical refineries across Southeast Asia.
Every export order passes through a strict final quality checkpoint, including full dimensional analysis, tap corner inspection, and 100% PMI validation. We package shipments in heavy-duty, export-grade wooden cases equipped with moisture-resistant barriers and tailored face protectors. This ensures your components arrive at the project site ready for immediate installation.
Technical Specifications Summary
| Orifice Assemblies – Technical Specifications |
Details |
| Size Range |
1" to 24" as per standard ASME B16.36 (Custom large sizes up to 60" available) |
| Pressure Class Range |
300 / 600 / 900 / 1500 / 2500 LBS, PN 16 to PN 400 |
| Type Configurations |
Weld Neck Orifice (WNO), Slip-On Orifice (SOO), Threaded Orifice, RTJ Orifice Pairs |
| Face Design Options |
Raised Face (Serrated RF), Flat Face (FF), Ring Type Joint (RTJ Groove) |
| Manufacturing Process |
100% Hot Forged / Solution Annealed & Precision CNC Tapped & Bored |
| Testing Protocols |
Hydrostatic Pressure, PMI, CMM Tap Geometry audit, Hardness, Ultrasonic, Radiography, LPT |
| Certification Scope |
EN 10204 3.1 / 3.2 MTC, Calibrated Orifice Plate Certification, Full NACE Compliance Available |
