Your Professional Stainless Steel Flange Supplier
Henan Shuangzhong Intelligent Technology Co., Ltd., an expert in precision manufacturing and pipeline system solutions, was founded in 1999. We are a professional manufacturer specializing in precision machining customization, pipeline equipment and pipe fittings customization, as well as the manufacturing and processing of rubber hoses.
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![Wn Type Weld Neck Flange 6-Inch Sch40 300 Lb Pressure Rating- 317 Stainless Stee]()
Wn Type Weld Neck Flange 6-Inch Sch40 300 Lb Pressure Rating- 317 Stainless SteeName:Wn Type Weld Neck Flange 6-Inch Sch40 300 Lb Pressure Rating- 317 Stainless SteelSize：1/2”–48”Standard：ASME B16.5 Wall thickness：150LB,300LB,600LBApplication areas：Widely used in high-pressure -
![ASTM A182 F22 Alloy Steel Flanges]()
ASTM A182 F22 Alloy Steel FlangesProduct: ASTM A182 F22 Alloy Steel FlangesMaterial: Astm A182 F22 MaterialStandards:Asme B16.5 StandardKey Properties:Class 2500, Astm A182 F22 Material, RTJ, Asme B16.5 Standard Primary -
![ASME B16.20 Nickel-Based Alloy 825 Oval Ring Joint Gasket]()
ASME B16.20 Nickel-Based Alloy 825 Oval Ring Joint Gasket1. Name:ASME B16.20 Nickel-Based Alloy 825 Oval Ring Joint Gasket. 2. Size: 1/2-48. 3. Grade:150#,300#,600#,900#,1500#,2500#. 4.Temperature:-40°C - 550°C. 5.Applications: Wholesale clients in the oil -
![ASME 16.20 / ASME B16.5 Type D NEMA Grade G10 Steel-Core Insulating Kit]()
ASME 16.20 / ASME B16.5 Type D NEMA Grade G10 Steel-Core Insulating Kit1. Type:Gaskets Materials. 2. Size: 1/2-48. 3. Grade:150#,300#,600#,900#,1500#,2500#. 4.Temperature:-40℃-120 ° C. 5.Applications: Wholesale clients in the oil and gas, petrochemical, and power -
![A182 GR. F51 RTJ RF ASME B16.5 6 6"Blind Flange]()
A182 GR. F51 RTJ RF ASME B16.5 6 6"Blind FlangeSizes: NPS 1/2 to 24. Pressure: Class 150 to 2500. Typical Applications: Offshore drilling platforms and subsea pipelines.High-pressure natural gas transmission systems.Highly corrosive chemical -
![ASME B16.5 900#-2500# RF FF RTJ UNS N08020 LWN FLANGE]()
ASME B16.5 900#-2500# RF FF RTJ UNS N08020 LWN FLANGETypes: SO, SW, BL, BL, WN, LJ, spectacle valves, orifice valves, etc.Sizes: 1/2”-48”, DN10-DN4000Pressure ratings: 75#-2500#, PN6-PN100Standards: ASME, DIN, EN, JIS, BS -
![ASME B16.5 150# PSI 900 ALLOY MONEL 400 FLANGE]()
ASME B16.5 150# PSI 900 ALLOY MONEL 400 FLANGEType: SO,SW,BL,BL,WN,LJ,Spectacle,Orifice ect.Size: 1/2”-48”, DN10-DN4000Class: 75#-2500#, PN6-PN100Standard: ASME,DIN,EN,JIS,BS -
![ASME B16.5 Stainless Steel Flanges]()
ASME B16.5 Stainless Steel FlangesName:ASME B16.5 Stainless Steel FlangesSize：NPS 1/2（DN 15）~ NPS 24（DN 600）Sealing Surface Type： RF (Raised Face), RTJ (Ring Joint, suitable for high voltage Class 600+), FF (Flat Face), MFM -
![Stainless Steel Blind Flange]()
Stainless Steel Blind FlangeName:Stainless steel blind flangeType: SS Blind FlangesSize: 1/2”-48”, DN10-DN4000Class: 150#-2500#, PN6-PN100Standard: ASME, DIN, EN, JIS, BS -
![ASTM A182 Gr F304 Flange]()
ASTM A182 Gr F304 FlangeProduct name: ASTM A182 gr F304 Flange. Material grade under ASTM A182 standard: F304;. American Unified Numbering System (UNS) grade: S30400;. European Standard (EN) grade: 1.4301. -
![Forged Stainless Flanges]()
Forged Stainless FlangesProduct name: forged stainless steel flanges. Material grades available include: 304, 304L, 316, 316L, 321, 347, 310S, 309S, 410, 410S, 420, 430, 2205, 2507, and other related grades.. Nominal -
![ASTM A182 F347 Flange]()
ASTM A182 F347 FlangeProduct name: ASTM A182 F347 Flange. Material grade: F347 (UNS S34700; EN 1.4550). Nominal diameter: DN10 (1/8) - DN2000 (80) (standard sizes; custom available). Pressure level: Class 150-2500
Why choose us
One-Stop Customized Solutions
We are committed to providing customers with one-stop customized solutions — from design support and precision manufacturing to quality assurance — to meet the diverse needs of various industries for high-performance, high-precision, and high-reliability industrial components.
Certification
We ensure quality through comprehensive system certifications: the company has passed the ISO 9001:2015 quality management system certification and the American Petroleum Institute (API) quality certification system.
Sales Market
Our products have been successfully exported to many countries and regions around the world, including the United States, Canada, Germany, India, Malaysia, Pakistan, the United Arab Emirates, Egypt, and the Middle East. We have earned the trust and praise of overseas customers.
On-Site Quality Supervision
We dispatch professional quality inspection teams to supervise the production of steel pipe fittings and rubber hoses. From raw material entry to the shipment of finished products, we maintain strict quality control throughout the process and accommodate special customer requirements, such as product identification and packaging methods.
Stainless Steel Flange
Stainless steel flange simplified as SS flange, it refers to the flanges that made of stainless steel. It is a mechanical component used primarily in piping systems to connect two sections of pipe or other equipment, providing a robust and reliable junction.
The common material standards and grades for stainless steel are ASTM A182 Grade F304/L and F316/L, with pressure ratings ranging from Class 150 to Class 2500. Stainless steel is utilized in more industries than carbon steel because it offers superior corrosion resistance and an aesthetically pleasing appearance.
304 Stainless Steel: General-purpose; good corrosion resistance.
316 Stainless Steel: Higher corrosion resistance, suitable for marine environments.
410 Stainless Steel: Martensitic; often used in applications requiring high strength.
ASTM A182 F304 Chemical Composition, %
|
Element |
Content Range |
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Carbon (C) |
0.08 max |
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Manganese (Mn) |
2.0 max |
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Phosphorus (P) |
0.045 max |
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Sulfur (S) |
0.03 max |
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Silicon (Si) |
1.0 max |
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Chromium (Cr) |
18.0 - 20.0 |
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Nickel (Ni) |
8.0 - 10.5 |
|
Iron (Fe) |
Balance |
Mechanical Properties of Stainless Steel ASTM A182 F304
|
Material Grade |
Yield Strength, Min (MPa) |
Tensile Strength, Min (MPa) |
Elongation, Min (%) |
Hardness |
|
SS304/SS304L |
>205 |
515-690 |
30 |
187 HB Max |
ASTM Specifications
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Application |
ASTM Standard |
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Piping,SMLS & Welded |
ASTM A312 |
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Tubing,SMLS & Welded |
ASTM A269 |
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Piping,Seamless |
ASTM A213 |
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Sheet/Plate |
ASTM A240 |
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Bar/Rod |
ASTM A276/A479 |
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Forgings/Flanges |
ASTM A182 |
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BW Fittings |
ASTM A403 |
Benefits
Corrosion Resistance
Stainless steel is designed to resist rust and corrosion.
Strength
Provides a strong connection under high-pressure conditions.
Versatility
Available in various types and sizes for diverse applications.
Corrosion Resistance: Thanks to a chromium oxide layer that resists rust and environmental degradation.
Strength: High tensile and fatigue strength make them suitable for extreme operating conditions.
Temperature Tolerance: Capable of handling high-pressure and high-temperature systems.
Versatility: Available in various sizes, dimensions, and grades to meet diverse project requirements.
Applications of Stainless Steel Flanges
Stainless steel flanges are widely used across various industries
Oil and Gas: Handles high-pressure and high-temperature fluids in pipelines and refineries.
Chemical Processing: Resists aggressive chemicals in corrosive environments.
Water Treatment: Durable against long-term exposure to water and fluctuating pressures.
Pharmaceuticals: Ensures hygienic, non-reactive connections in sterile environments.
Marine Applications: Protects against saltwater corrosion in shipbuilding and offshore platforms.
Power Generation: Used in boiler systems and turbines to withstand extreme heat and pressure.
The following are the top 8 stainless steel flanges used in stainless steel pipelines:
Weld Neck Flanges: These flanges are distinguished by their protruding necks. The weld neck flanges have the same bevel and thickness of the pipe. This flange is considered for severe service conditions such as sub-zero or high temperatures and high pressure.
Slip-On Flanges: These are the most affordable varieties of flanges available for purchase. The slip–on flanges have a slightly larger diameter than the pipe, which makes it easier to slip them over the pipe. These stainless steel flanges are fillet welded to a position and are ideal for low-pressure applications.
Blind Flanges: The flanges are designed without a bore, and are used to seal vessel openings or piping systems. These flanges are ideal for piping systems or vessels that require regular inspection. The blind flanges can be supplied with or without hubs. This flange can easily handle high stress caused due to internal pressure.
Threaded Flanges: These types of flanges are used for special applications and can be easily assembled without welding. Stainless steel threaded flanges are compatible with pipes with external threads. The flanges are not recommended for applications where bending stresses, high pressure or high temperatures are involved.
Lap Joint Flanges: The lap joint flanges are the type of slip-on flanges that are used with stub end fittings. These flanges are ideal for piping systems that require regular inspection and maintenance such as low alloy steel pipes or carbon steel pipes.
Socket Weld Flanges: The flanges are designed for use on small diameter and high-pressure piping. The socket weld flanges have internal welds which contribute to their durability as well as fatigue strengths. These flanges are used in the chemical processing industry.
Orifice Flanges: The function of these steel flanges is to provide access to a line for metering liquids or gases. The orifice flanges are installed with orifice plates or flow nozzles.
Ring–Type Joint Flanges: These flanges are used for high pressure and temperature applications. The ring-type joint flanges feature a groove that can be easily compressed on blind, slip-on or weld neck flange. The flanges help avoid leaks in pipelines where media is transferred at high pressure and high temperature.
Types
Weld Neck Flange
Designed for high-pressure applications, it has a long neck that allows for a smooth transition between the flange and pipe.
01
Slip-On Flange
Slides over the pipe and is welded in place, making it easier to align.
02
Blind Flange
Used to seal the end of a pipe, preventing flow.
03
Socket Weld Flange
Has a socket for the pipe to fit into, providing a strong connection.
04
Threaded Flange
Contains internal threads for screwing onto a pipe.
05
Our Certificate
FAQ
As one of the leading stainless steel flange manufacturers in China, we warmly welcome you to buy high quality stainless steel flange for sale here from our factory. Good service and reasonable price are available.
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