Description
Stainless Steel SO Flange SUPPLIERS AND MANUFACTURERS BRIEF INTRODUCTION.
Stainless Steel SO (Slip-On) Flange is a type of pipe flange made from stainless steel, characterized by its design that allows it to “slip over” the pipe.
It features a slightly larger bore than the pipe’s outer diameter, enabling it to be positioned onto the pipe before being welded both on the outer flange hub and the backside for secure attachment.
Key properties include corrosion resistance (due to stainless steel’s chromium content), durability in high-temperature or high-pressure environments, and ease of alignment during installation.
it Commonly used in industrial piping systems, such as chemical processing or oil/gas applications, it ensures leak-proof connections while simplifying assembly. Standards like ASME B16.5 typically govern its specifications.
Stainless Steel SO Flange Belongs to the American standard flange standard system, Is the American standard flange (also known as ANSI flange) one of the manifestations of equipment or pipes commonly used in the flange.
What is Stainless Steel SO Flange?
Stainless steel SO(Slip-On) flange is a pipe flange made from stainless steel (e.g., ASTM A182), designed to be slid over the pipe end and secured by dual fillet welds (inside and outside the hub), integrating bolt holes and a raised face (RF) for connection and sealing, based on ANSI B16.5
What’s Stainless Steel Slip On Flange?
Stainless steel slip-on flange is a pipe fitting manufactured from stainless steel (e.g., ASTM A182) that slides over the pipe end and is secured by inner and outer hub fillet welds, featuring bolt holes and a raised face (RF) for connection to a mating flange, Based on ASME B16.5
The following is the ANSI SO FLANGE, the relevant pressure, the various parts of the size and icon,
STAINLESS STEEL SLIP ON FLANGE SUPPLIERS,MANUFACTURERS IN CHINA,AMAZING PRICE AND HIGH QUALITY STAINLESS STEEL SLIP ON FLANGE,JUST CONTACT US!
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What are Standards for Stainless Steel SO (Slip-On) Flanges?
Based on technical standards, the primary specifications governing Stainless Steel Slip-On (SO) Flanges are:
- ASME B16.5: The core standard defining dimensions, tolerances, materials, pressure-temperature ratings, marking, and testing for pipe flanges (including Slip-On type) from NPS ½” to NPS 24″, for stainless steel and other materials. It mandates features like the raised face (RF) and bolt hole patterns.
- Material Standards:
- ASTM A182/A182M: Standard Specification for Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service. Specifies grades like F304, F316, F321, etc.
- ASTM A240/A240M: Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications (used if flanges are fabricated from plate).
- ASME B16.47: Covers larger diameter flanges (NPS 26″ to NPS 60″), Series A (MSS SP-44) and Series B (API 605). Includes Slip-On types.
- MSS SP-43: Standard Practice for Lightweight (Thinner Wall) Stainless Steel Butt-Welding Fittings (includes Slip-On flanges under DN 300/NPS 12).
- ASME B31.3 (Process Piping) & other ASME B31 Codes: Govern the application, installation (including welding procedures), and inspection requirements for piping systems using these flanges. References B16.5/B16.47 for flange specifications.
In summary: Stainless Steel SO flanges are primarily defined dimensionally and for pressure rating by ASME B16.5 (up to 24″) or ASME B16.47 (larger sizes), manufactured to material specs like ASTM A182 (forgings) or ASTM A240 (plate), with complementary standards MSS SP-43 (for lightweight) and installation rules in ASME B31.3.
Stainless Steel Slip On Flanges Meterial Grade:
201, 202, 301, 304, 304L, 310S, 316, 316L,316Ti, 317, 317L, 321, 347,904L Duplex Stainless Steel, S31803/2205, S32750/2507 ,S32760 ,S32304/2304,MONEL400,INCONEL600,INCOLOY800, ALLOY20, ALLOY28, NICKEL ALLOY. WN FLANGES SUPPLIERS & MANUFACTURERS
Stainless Steel Slip On Flange DELIVERY & PACKING:DELIVERY:IN 7-30 DAYS,PACKING:PLASTIC BAG OR WOODEN CASES OR ACC TO CUSTOMER REQUEST.
Stainless Steel SO Flanges Features
The Stainless steel slip on flange is also calling loose flange
stainless steel slip on flange is the use of flanging, steel ring and so on the flange set in the pipe end, the flange can be in the tube end activities. Steel ring or flanging is the sealing surface, the role of the flange is to press them.
It can be seen because the steel ring or flanging block, loose flange is not in contact with the media.
Sliding flange for steel, aluminum and other non-ferrous metals and stainless steel acid-resistant steel containers connected and corrosion-resistant pipeline.
stainless steel slip on flange is the activities of the flange, the general is supporting the water supply and drainage accessories (the most common on the expansion joints), manufacturers at the end of the expansion and contraction of the two ends have a flange, directly with the pipeline in the project, equipment Connect with bolts.
Is the kind of flange with lapel.
Generally used in the pipeline, so, loose bolt can rotate the pipe on both sides, and then tighten. Can be more convenient to disassemble the pipeline. Loose flanges are also called loose sets of flanges.n.
Flange connection is an important way to connect the construction of the pipeline.
Flange connection easy to use, able to withstand greater pressure. In industrial piping, the use of flange connections is very extensive.
In the family, the pipe diameter is small, and is low, can not see the flange connection. If in a boiler room or production site, full of flanged pipes and equipment.
Stainless Steel Slip On Flange Precautions for use:
1, the flange cover between the eye corrosion,in order to prevent the heating , welding current should not be too much,
less than about 20% of carbon steel electrode, arc should not be too long, cold between the layers to narrow the weld is appropriate.
2, the electrode should use to dry, titanium calcium type should be dried at 150 ℃ for 1 hour, low a hydrogen type should be 200-250 ℃ drying 1 hour
(can not be repeated drying, or easy to peel the skin peel), to prevent Welding paste oil and other dirt, so as not to cause the weld to increase the carbon content and affect the quality of welding.
3, Stainless Slip On weld flange welding, by repeated heating precipitation of carbides, reducing corrosion resistance and mechanical properties.
4, chrome stainless steel slip on flanges after welding hardening American standard flange larger, prone to crack.
If the same type of chromium stainless steel electrode ( G202, G207 ) welding, must be more than 300 ℃ preheating and 700 ℃
after the slow cooling treatment. If the weldment can not be post-weld heat treatment, you should use stainless steel flange fittings electrode (A107, A207).
5, Stainless Steel Slip On Flange, in order to improve the corrosion resistance and weldability and the appropriate increase in the amount of stability elements Ti, Nb, Mo,
welding better than chromium stainless steel slip on flange better. When using the same type of chromium stainless steel flange electrode (G302, G307), should be more than
200 ℃ preheat and 800 ℃ after tempering around the tempering treatment. If the weldment can not be heat treated, you should use stainless steel flange fittings (A107, A207).
6, stainless steel flange fittings, butt welding flange has good corrosion resistance and oxidation resistance, widely used in chemical, fertilizer, oil, medical machinery manufacturing.
Stainless Steel SO Flange Supplier/Manufacturer Slip-On Type FAQ – KCM SPECIAL STEEL (KCMSS)
1. What’s a Stainless Steel Slip-On Flange?
Stainless Steel Slip-On (SO) Flange is a type of pipe flange designed to “slip over” the pipe end. It features a slightly larger bore than the pipe’s outer diameter, allowing easy positioning before welding. The flange is secured by fillet welds on both the outer hub and backside, ensuring a leak-proof connection. Its key characteristics include high corrosion resistance (due to chromium content in stainless steel), durability in high-temperature/pressure environments, and simplified alignment during installation. These flanges are widely used in industrial piping systems, including chemical processing, oil and gas, and water supply applications. Standards like ASME B16.5 govern their specifications.
2. What Materials and Grades Are Available?
KCM SPECIAL STEEL supplies SO flanges in a wide range of stainless steel and specialty alloy grades, as shown in the table below:
| Category | Available Grades |
|---|---|
| Austenitic Stainless Steel | 201, 202, 301, 304, 304L, 310S, 316, 316L, 316Ti, 317, 317L, 321, 347, 904L |
| Duplex Stainless Steel | S31803/2205, S32750/2507, S32760, S32304/2304 |
| Nickel Alloys | MONEL 400, INCONEL 600, INCOLOY 800, ALLOY 20/28, NICKEL ALLOY |
3. What Standards Do KCM’s SO Flanges Comply With?
KCMSS products adhere to international standards, including:
- ANSI (American National Standards Institute)
- ASME B16.5 (Pressure-Temperature Ratings, Dimensions)
- ASTM A182 (Material Standard for Forged Flanges)
- EN, DIN, BS, JIS, GOST, UNI, SABS, GB
Additionally, the flanges are suitable for systems following ASME B31.3 for process piping.
4. What Are the Key Features of Stainless Steel Slip-On Flanges?
- Easy Alignment: Simplifies bolt hole alignment during assembly.
- Loose Flange Design: Allows rotation for convenient disassembly.
- Corrosion Resistance: Ideal for aggressive media due to stainless steel composition.
- Cost-Effective: Lower initial cost compared to weld neck flanges.
- Dual Welding: Involves hub and backside welds for robust joints.
5. What Are Typical Applications?
These flanges are commonly used in:
- Chemical & Petrochemical Plants
- Water Treatment and Supply Systems
- Oil and Gas Pipelines
- Power Generation Equipment
- Pharmaceutical and Food Processing Industries (where hygiene and corrosion resistance are critical).
6. What Sizes and Pressure Ratings Are Offered?
KCM provides SO flanges in sizes up to 60 inches, with pressure ratings conforming to ASME B16.5 Class 150 to 2500 (or equivalent).
7. What Delivery and Packaging Options Exist?
- Delivery Time: 7–30 days after order confirmation.
- Packaging: Plastic bags, wooden cases, or customized per client request.
- Global Shipping: Examples include deliveries to Singapore, Europe, Mexico, and Africa.
8. What Precautions Should Be Taken During Installation?
- Welding Control: Use low-current electrodes (20% less than carbon steel) to avoid carbides and maintain corrosion resistance.
- Pre-/Post-Weld Heat Treatment: Required for certain grades (e.g., chromium stainless steels) to prevent cracking.
- Electrode Drying: Titanium calcium-type (150°C for 1 hour) or low-hydrogen type (200–250°C for 1 hour).
- Stabilizing Elements: Grades with Ti, Nb, or Mo improve weldability.
Conclusion
In summary, KCM SPECIAL STEEL’s Stainless Steel Slip-On Flanges offer reliability, versatility, and compliance with global standards. For detailed specifications, pricing, or custom requirements, visit the product page or contact KCMSS directly.
