Product Description
DIN EN 1092 - 1 type 1 - DN40 - 1,4307 Flange
1. Product Overview
The DIN EN 1092 - 1 type 1 - DN40 - 1,4307 flange is a crucial component in piping systems. It is designed to connect pipes, valves, and other equipment, ensuring a secure and leak - free connection. The "DN40" indicates the nominal diameter of the flange, which is 40 mm, making it suitable for specific - sized pipelines. The "1,4307" refers to the material grade, which is a type of austenitic stainless steel, providing excellent corrosion resistance. This flange conforms to the DIN EN 1092 - 1 standard, which ensures its quality and compatibility with other components in European piping systems.
2. Specifications
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Specification
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Details
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Dimensions
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According to the DIN EN 1092 - 1 standard for DN40 flanges: - Outside diameter (OD): Usually around 150 mm. - Inside diameter (ID): Matches the outer diameter of a 40 - mm nominal pipe size, which is approximately 48.3 mm for standard pipes. - Thickness: Varies depending on the pressure rating but is typically around 14 - 16 mm for common pressure classes. - Bolt hole circle diameter: Approximately 110 mm, with 4 bolt holes of a specific diameter (e.g., M16 for many standard designs).
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Pressure Ratings
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Can be designed for different pressure ratings. Common pressure classes include PN10, PN16, PN25, etc. For example, a PN16 flange of this size can withstand a maximum working pressure of 16 bar under specific temperature conditions.
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Flange Type
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Type 1 flange in the DIN EN 1092 - 1 standard is a flat - faced flange. It has a flat sealing surface that is suitable for use with flat - faced gaskets. This type of flange is relatively simple in design and is widely used in applications where the pressure and temperature requirements are not extremely high.
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3. Material Properties
3.1 Chemical Composition
The 1,4307 stainless steel has the following typical chemical composition (in %):
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Element
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Content
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Carbon (C)
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≤0.030
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Chromium (Cr)
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16.5 - 18.5
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Nickel (Ni)
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8.0 - 10.5
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Manganese (Mn)
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≤2.00
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Phosphorus (P)
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≤0.045
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Sulfur (S)
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≤0.015
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Silicon (Si)
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≤1.00
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3.2 Mechanical Properties
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Property
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Value
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Tensile Strength
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480 - 640 MPa
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Yield Strength
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≥175 MPa
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Elongation
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≥40%
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The low carbon content in 1,4307 steel helps to prevent carbide precipitation, which is beneficial for its corrosion resistance, especially in welded joints. The high chromium and nickel content contribute to its excellent corrosion resistance in a wide range of environments, including those with moisture, chemicals, and mild acids. The good mechanical properties ensure that the flange can withstand the mechanical stresses associated with fluid flow and pressure in piping systems.
4. Applications
- Food and Beverage Industry: Due to its excellent corrosion resistance and hygienic properties, the 1,4307 flange is widely used in food and beverage processing plants. It is used in pipelines for transporting water, milk, juices, and various food - grade fluids. The smooth surface of the stainless - steel flange helps prevent the build - up of bacteria and contaminants, ensuring the integrity of the products being transported.
- Pharmaceutical Industry: In pharmaceutical manufacturing, where strict hygiene and corrosion - free environments are essential, these flanges are used in pipelines for transporting process fluids, purified water, and pharmaceutical ingredients. The 1,4307 material meets the high - quality standards required in the pharmaceutical industry, minimizing the risk of product contamination.
- Chemical Industry: Although 1,4307 has limitations in highly corrosive chemical environments, it is suitable for transporting less - aggressive chemicals such as some organic solvents, mild acids, and alkalis. It can be found in chemical plants in pipelines for general - purpose chemical transportation, where its corrosion resistance provides a cost - effective solution compared to more exotic materials.
- Water Treatment Plants: In water treatment facilities, the 1,4307 flange is used in pipelines for both raw water intake and treated water distribution. It can withstand the corrosive effects of water, especially in the presence of chlorine and other disinfectants used in the treatment process. The flange's durability ensures long - term reliable operation of the water treatment system.
5. Manufacturing Process
5.1 Forging
Forging is a common method for manufacturing 1,4307 flanges. The stainless - steel billet is heated to an appropriate temperature range (usually around 1050 - 1150 °C for 1,4307 steel) and then shaped using forging equipment. There are two main forging techniques:
- Open Die Forging: This process involves shaping the metal between two flat dies. The billet is gradually deformed through operations such as upsetting, drawing out, and bending. Open die forging is suitable for producing small - to - medium - sized batches of flanges with relatively simple shapes. It allows for customization of the flange's dimensions to some extent.
- Closed Die Forging: Also known as impression die forging, the heated billet is placed in a die set with the exact shape of the flange. Pressure is applied to force the metal to fill the die cavity. Closed die forging offers better dimensional accuracy and surface finish compared to open die forging. It is more suitable for high - volume production of standardized flanges.
5.2 Machining
After forging, the flanges undergo machining operations to achieve the final required dimensions and surface finish. Machining processes include:
- Turning: Used to shape the outer and inner diameters of the flange to the precise dimensions specified in the standard. Turning can also be used to create smooth surfaces on the flange faces.
- Milling: Milling operations are carried out to create flat surfaces, grooves for gaskets, and to machine the bolt - hole circle. Precision milling ensures that the flange's sealing surface and bolt - hole patterns meet the strict tolerances required for proper assembly.
- Drilling: Holes for bolts are drilled in the bolt - hole circle. The drilling process must be accurate to ensure that the bolts can be properly inserted and tightened, providing a secure connection.
- Threading: If the flange has threaded bolt holes, threading operations are performed to create the appropriate thread profile. High - quality threading is crucial for the integrity of the bolted connection.
5.3 Surface Treatment
To further enhance the corrosion resistance and appearance of the 1,4307 flanges, surface treatment may be applied. Common surface treatments include:
- Pickling: The flange is immersed in an acid solution (usually a mixture of nitric and hydrofluoric acids) to remove oxide layers, scale, and impurities from the surface. Pickling helps to expose the fresh, corrosion - resistant surface of the stainless steel and improves its overall corrosion resistance.
- Passivation: After pickling, passivation is often carried out. The flange is treated with a solution (such as nitric acid) to form a thin, protective oxide film on the surface. This oxide film further enhances the corrosion resistance of the stainless steel by acting as a barrier against corrosive agents.
6. Quality Control
- Material Testing: Before starting the manufacturing process, the incoming 1,4307 stainless - steel material is thoroughly tested. Chemical analysis is performed using techniques such as spectroscopy to verify that the chemical composition of the material meets the specified standards. Mechanical property testing, including tensile tests, hardness tests, and impact tests, is also carried out to ensure that the material has the required strength and toughness.
- Dimensional Inspection: During and after the manufacturing process, the dimensions of the flanges are inspected using precision measuring tools. Calipers, micrometers, and coordinate measuring machines (CMMs) are used to measure the outside diameter, inside diameter, thickness, bolt - hole circle diameter, and the diameter and depth of the bolt holes. The measured dimensions are compared to the tolerances specified in the DIN EN 1092 - 1 standard to ensure compliance.
- Surface Inspection: The surface of the flanges is inspected for any defects. Visual inspection is the first step, looking for surface cracks, pits, scratches, or other visible imperfections. Non - destructive testing methods such as magnetic particle inspection (MPI) and penetrant testing (PT) may be used to detect surface - breaking defects that are not visible to the naked eye. For flanges with a critical sealing surface, the surface finish is also measured using roughness testers to ensure that it meets the required standards for proper gasket sealing.
- Pressure Testing: To ensure the integrity of the flange and its ability to withstand the rated pressure, pressure testing is performed. The flange is assembled with a test fixture and subjected to a specified pressure (usually higher than the rated working pressure) using a hydraulic or pneumatic pressure source. The flange is then monitored for any signs of leakage or deformation. Pressure testing can be done in a hydrostatic (using water) or pneumatic (using air or gas) environment, depending on the application and requirements.
7. Advantages
- Excellent Corrosion Resistance: The 1,4307 stainless - steel material offers high resistance to corrosion in a variety of environments, including those with moisture, chemicals, and food - grade substances. This makes it suitable for applications where long - term durability and resistance to corrosion are essential.
- Hygienic Properties: In industries such as food and beverage and pharmaceuticals, the smooth surface of the 1,4307 flange helps prevent the accumulation of bacteria and contaminants, ensuring the safety and quality of the products being transported.
- Good Mechanical Properties: The material has sufficient tensile strength, yield strength, and elongation, allowing the flange to withstand the mechanical stresses associated with fluid flow and pressure in piping systems.
- Compliance with Standards: By conforming to the DIN EN 1092 - 1 standard, the flange ensures compatibility with other components in European piping systems, facilitating easy installation and maintenance.
8. Conclusion
The DIN EN 1092 - 1 type 1 - DN40 - 1,4307 flange is a reliable and widely used component in various industries. Its excellent corrosion resistance, hygienic properties, and compliance with standards make it a preferred choice for applications where the integrity of the piping system and the prevention of contamination are crucial. However, its relatively high cost and limitations in extreme environments need to be carefully considered when selecting it for specific projects. By understanding its specifications, material properties, manufacturing processes, and quality control measures, engineers and industry professionals can make informed decisions on the use of this flange to ensure the safe and efficient operation of piping systems.
Product Description
| Equipment |
| 3-axis, 4-axis and full 5-axis processing equipment, CNC lathe, centering machine, turning and milling compound, wire cutting, EDM, grinding, etc |
| Processing |
| CNC machining, CNC Turning, CNC Milling, Welding, Laser Cutting, Bending, Spinning, Wire Cutting, Stamping, Electric Discharge Machining (EDM), Injection Molding |
| Our Advantages |
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1)24 hours online service & Quickly Quote/Delivery.
2)100% QC quality inspection before delivery, and can provide quality inspection form.
3)10+ years of experience in the CNC machining area and have a senior design team to offer perfect modification suggestions |
| Quality Assurance |
| 100% Inspect Before Shipment, ISO9001:2015, ISO13485:2016, SGS, RoHs, TUV |
| Serface Treatment |
Aluminum parts:Clear Anodized, Color Anodized, Sandblast Anodized, Chemical Film, Brushing, Polishing
Stainless Steel parts:Polishing, Passivating, Sandblasting, Laser engraving, Electrophoresis black, Oxide black
Steel parts:Zinc Plating, Oxide black, Nickel Plating, Chrome Plating, Carburized, Heat treatment
Brass parts:Nickel Plating, chrome plating, Electrophoresis black, Oxide black, Powder coated |
Technical Details
Pressure-Temperature Rating
The pressure-temperature rating is the maximum allowable working pressure (bar unit) of the material and grade used at the rated temperature (Celsius).
Temperature Consideration
Whether flange joints are used at high or low temperatures, leakage due to external forces and moments generated by the connected piping or equipment should be considered. To prevent leakage, pipe flanges and flanged fittings should avoid the application of severe external loads and sharp thermal gradients.
High Temperature
Application at temperatures in the creep range will result in decreasing bolt loads as relaxation of flanges, bolts, and gaskets takes place. Flanged joints subjected to thermal gradients may likewise be subject to decreasing bolt loads. Decreased bolt loads diminish the capacity of the flanged joint to sustain loads effectively without leakage. At temperatures above 200°C (400°F) for Class 150 and above 400°C (750°F) for other class designations, flanged joints may develop leakage problems unless care is taken to avoid imposing severe external loads, severe thermal gradients, or both.
Low Temperature
Some materials, especially some carbon steel materials, exhibit a significant decrease in ductility when used at low temperatures, and thus cannot withstand impact load, sudden stress changes, and high stress concentrations. Some regulations require an impact test even when the temperature is above -29 °C (−20°F).
Packaging & Shipping
Pressure Test
No pressure test is required on the flange.
Flanged fitting should be tested for shell pressure.
Shell Pressure Test for Flanged Fittings
The shell pressure test for flanged fittings shall be at a pressure no less than 1.5 times the 38°C (100°F) pressure rating rounded off to the next higher 1 bar (25 psi) increment.
Test Conditions
The shell pressure test for flanged fittings shall be at a pressure no less than 1.5 times the 38°C (100°F) pressure rating rounded off to the next higher 1 bar (25 psi) increment
Test Duration
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