China OEM Plain Flange Manufacturer – Global Export Ready
description1
Socket Weld Flanges – Technical Specifications
|
Parameter Category |
Feature Highlights |
Details & Standards |
|
Fundamental Structure |
Disk - shaped design without hub |
Flat circular plate with central bore for pipe insertion and perimeter bolt holes; inner bore diameter > pipe outer diameter for easy welding |
|
Connection & Sealing |
Dual - fillet weld attachment |
Welded top and bottom to pipe; available in Raised Face (RF) for enhanced sealing or Flat Face (FF) for basic applications |
|
Size Spectrum |
Wide - ranging diameters |
From 1/2" (DN15) to 60" (DN1500), compliant with ANSI/ASME B16.5 dimensions (matching slip - on flanges sans hub) |
|
Material Arsenal |
Tri - material selection |
- Carbon Steel (ASTM A234 WPB): Cost - effective for general use |
|
Manufacturing Prowess |
State - of - the - art equipment |
Machined by CNC lathes, high - speed drilling/milling machines, and CNC wire cutting machines; precision - controlled production |
|
Quality Assurance |
Rigorous multi - step checks |
Heat - treated for optimal properties; chemical & mechanical tests; certified by ISO, PED for international compliance |
|
Pressure & Temperature Tolerance |
Industry - standard limits |
Recommended for low - to - medium pressure systems (< 150 psi); temperature range: - 20°C to 300°C (varies by material) |
|
Industry Applications |
Multi - sector versatility |
Oil & gas pipelines, water supply networks, power generation piping systems, and more |
Sealing Face
Although the plain flange has a flat - plate - like appearance, its sealing face can be of different types. The two common types are the raised face (RF) and the flat face (FF). Among them, the raised face plain flange is more popular in regular industry systems as it provides a better sealing effect under normal operating conditions.
(FF)Plain Flange
(RF)Plain Flange
Connection with Pipes
The inner hole of the plain flange is slightly larger than the outer diameter of the pipe it is to be connected with. To secure the flange to the pipe, a fillet weld is applied at both the bottom and the top of the flange where it meets the pipe. However, due to the use of fillet weld, the plain flange is not recommended for high - pressure applications. In fuel and water pipelines, it is common to bolt two plain flanges together with a gasket placed between them to ensure a good seal.
Standards and Dimensions
In the ANSI/ASME B16.5 flange standard, there is no specific plate slip on flange. However, in many practical projects, the ANSI B16.5 plate flange is widely used to reduce project costs. The ANSI/ASME B16.5 plain flange has the same dimensions and pitch circle diameters (PCDs) as the slip on flange, with the only difference being the absence of a hub. The available size range of plain flanges is usually from 1/2" to 60".
Materials
YUXIN can produce plain flanges using a variety of materials. Common materials include carbon steel, which is cost - effective and suitable for general applications; stainless steel, known for its excellent corrosion resistance and often used in environments where high - quality anti - corrosion performance is required, such as in the food and beverage, and pharmaceutical industries; and alloy steel, which combines the advantages of different elements to provide enhanced mechanical properties and performance in specific working conditions.
Manufacturing and Quality Control
YUXIN is equipped with advanced machining equipment, such as CNC lathes, high - speed drilling and milling machines, and CNC wire cutting machines. During the manufacturing process of plain flanges, strict quality control measures are implemented. Adequate heat treatment is carried out, and the chemical and mechanical properties of the products are carefully examined. Moreover, YUXIN has obtained international certificates like ISO, PED, etc., which demonstrate its compliance with international quality standards.
Applications
Plain flanges are widely used in various industries. In the oil and gas industry, they are used in pipelines for transporting oil and gas. In the water supply and drainage industry, they are crucial for connecting pipes in water treatment plants and urban water supply systems. In the power generation industry, whether it is thermal power, hydropower, or other types of power generation, plain flanges play an important role in the piping systems. Their simple structure, relatively low cost, and easy installation make them a popular choice for many industrial applications where the pressure requirements are not extremely high. If you are interested in YUXIN’s high - quality plain flanges, please feel free to contact us. YUXIN can provide customized solutions according to your specific needs.
Application
Quality Control Process Chart
Quality control test
During raw materials，manufacturing，inspection and delivery process，all norms are strictly abided by and process control will be well carried out.All reports will be issued timely to do analysis.
We have devoted a great deal of effort to the process control and management practices in accordance with traceability and consistency of quality will be continually implemented.
In-house control quality inspection：
Spectrometer Detection and Analysis of Chemical Elements
Metallographic Analysis
Mechanical Property Testing(Hardness, Tensile Strength, Yield Strength, Elongation, Reduction of Area, Charpy-Impact)
Ultrasonic, Portable Direct Reading Spectrometer, Macro Erosion Test, Intergranular Corrosion Test, Penetration Test, Magnetic-particle Inspection, Size Inspection, Visual check, We’ll do special tests as per clients'demand and accept the third party inspection actively.
FAQ
-
Q: How does your factory do regarding quality control?
-
Q: May I have some samples before bulk order?
-
Q: Can we visit your Company?
-
Q: What is the payment terms?
-
Q: What's your delivery time?
-
Q: Is it OK to mark my logo on your products?