Slip-on flanges, also known as ‘hubbed flanges’, have a hub with a very low profile. This type of flange is usually connected to a pipe by one or two fillet welds (one outside the flange and one inside the flange), it is however possible to use only a single weld. Slip-on flanges are produced in many sizes and favoured for lower pressure applications (ASME class ≤ 600).
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Slip-on Flange Cross Section：1、Slip On Flange;2、Filled weld outside;3、Filled weld inside;4、Pipe |
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A slip-on flange’s bore size (internal diameter) is larger than that of the connecting pipe, which allows it to slide/slip onto the pipe (slip-onto the pipe). There is no full penetration weld between the pipe and the flange, thus there are limitations for its usage due to lower weld integrity.
However, if a welding neck flange cannot be used due to space limitations, a slip-on flange may be a suitable alternative.
Advantages of slip-on flanges relate to lower procurement costs, less required skill for making the weld, lower accuracy requirement for pipe cutting, and no weld preparation requirements for a pipe end weld.
Limitations for slip-on flanges relate to:
Ø The use of two welds instead of one (usually).
Ø Reduced mechanical strength (welding neck flanges are 30% stronger
Ø Unsuitability for cyclic loading.
Ø Inability to perform some non-destructive tests on welds.
Ø Unavailable in 2.5-inch size and over in ASME class 1500.
Ø Unavailable in all sizes in ASME class 2500.
Ø Generally not used above ASME class 600.
Although cheaper than a welding neck flange, there is little price difference if two welds are performed and both must be checked using non-destructive testing techniques.
Non-Destructive Testing (NDT) Techniques
There are no specific NDT techniques used in conjunction with slip-on flanges. If the slip-on flange is fillet welded, then a dye penetrant test may be performed on the weld. A visual inspection of the mating faces and pipe is possible.
ASME Standards
The standards ASME B16.5 and ASME B31.3 specify the requirements for slip-on flange installation, maintenance, and testing.
Standard Specification For Slip On Flanges
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Dimensions |
ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings |
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Size |
1/2" (15 NB) to 48" (1200NB) |
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Class |
150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6,10, 16, 25, 40 Etc. |
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DIN |
DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636,DIN2637, DIN2638, DIN2673 |
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BS |
BS4504 , BS4504, BS1560, BS10 |
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Flange Face Type |
Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ) |
Material & Grades of Slip On Flanges (SORF)
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Stainless Steel Slip On Flanges |
ASTM A 182, A 240 F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H, 904L |
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Duplex & Super Duplex Steel Slip On Flanges |
ASTM / ASME A/SA 182 F 44, F 45, F51, F 53, F 55, F 60, F 61 |
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Carbon Steel Slip On Flanges |
ASTM / ASME A/SA 105 ASTM / ASME A 350 , ASTM A 181 LF 2 / A516 Gr.70 A36, A694 F42, F46, F52, F60, F65, F706 |
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Low Temperature Carbon Steel Slip on Flanges |
ASTM A350, LF2, LF3 |
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Alloy Steel Slip On Flanges |
ASTM / ASME A/SA 182 & A 387 F1, F5, F9, F11, F12, F22, F91 |
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Copper Alloy Steel Slip On Flanges |
ASTM SB 61 , SB62 , SB151 , SB152 UNS No. C 70600 (Cu-Ni 90/10), C 71500 (Cu-Ni 70/30), UNS No. C 10100, 10200, 10300, 10800, 12000, 12200 |
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Nickel Alloy Slip On Flanges |
ASTM SB564, SB160, SB472, SB162 Nickel 200 (UNS No. N02200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020) |
ASME B16.5 Raised Faced Slip-On Flanges Available Types
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Slip on Raised Face Flange |
Raised Faced Slip-On Flanges |
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ANSI B16.5 Slip On Flanges |
Slip on Flange Dimensions |
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ASME B16.5 SORF Flanges |
ANSI B16.5 Class 150 Slip-On Flanges |
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Stainless Steel Slip on Flanges Suppliers |
SS Slip on Flange |
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Slip on Plate Flanges Dealer |
ASME B16.47 Series A and B SORF Flanges Exporter |
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ANSI B16.5 class 150 SORF Flange Stockholder |
ANSI 150 Slip on Flange Distributors |
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Carbon Steel Slip on Flange |
High Quality SORF Flanges Manufacturer |
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ASTM A182 Stainless Steel SORF Flange |
Duplex Steel Slip on Flange |
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Super Duplex Steel Slip on Forged Flange |
Copper Nickel Slip on Pipe Flanges |
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High Nickel Alloy SORF Flanges |
Hastelloy Flat Faced Slip-On Flanges Stockist |
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Titanium ASME B16.47 Series A and B SORF Flanges |
Inconel Slip on Flanges |
ANSI B16.5 Slip On Flanges Application
ASME B16.5 Slip on Flanges are known to deliver exceptional performance and are generally developed for meeting the demands. We offer a broad range of Flat Faced Slip-On Flanges through a worldwide network of stock-keeping branches. These Slip On Flange is use in various industries like :
Stainless Steel Slip on Flanges uses in Oil and Gas Pipeline
Slip on Raised Face Flanges uses in Chemical Industry
Alloy Steel SORF Flanges uses in Plumbing
Flat Faced Slip-On Flanges uses in Heating
Slip on Pipe Flanges uses in Water Supply Systems
ANSI B16.5 Slip on Forged Flanges uses in Power Plant
Slip On Plate Flanges uses in Paper & Pulp Industry
Slip On Flange uses in General Purpose Applications
Steel Slip on Flanges uses in Fabrication Industry
Slip on Flange uses in Food Processing Industry
Slip on Flanges uses in Structural Pipe
