Stainless Steel Pipe Fittings

Slip On Flanges (SO Flanges) By

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Slip On Flanges (SO Flanges) By

Slip on flanges are slipped over the stainless steel pipes and welded (usually both inside and outside) to provide strength and prevent leakage. Slip on Flanges are at the low cost end of the scale, and do not require high accuracy when cutting the pipe to length. These slip on can sometimes have a boss or hub, and can be made with a bore to suit either stainless steel pipes orstainless steel tubes.

The Slip on flanges have low hubs because the pipe slips into the flange prior to welding. It is welded both inside and out to provide suffcient strength and prevent leakage.Slip-on flanges are all bored slightly larger than the O.D. of the pipe. They are preferred over welding neck flanges bu many users due to their lower intial cost, but final intallation cost is probably not much less than that of the welding neck flange because of the additional welding involved.


Size: 1/2” to 60”, DN 12mm to DN 1500mm
Pressure class: Class 150 to Class 2,500, PN 2.5 to PN 250
Facing: RF / RTJ
Cabon steel: A105, A350 LF2
Stainless steel: A182 F304/F304L/F316/F316L/F321
Alloy steel: F11, F12

Advantages of slip on flanges:
Low cost installation
Less time needed to spent on ensuring the accuracy of the cut pipe
They are somewhat easier to align
The slip-on flanges have low hub because the pipe slips into the flange before welding
The flange is welded both inside and outside to provide sufficient strength
They prevent leakage

Standards, Dimensions & Weight
  • ASME/ANSI B16.5 Class 150 SO Flanges
  • ASME/ANSI B16.5 Class 300 SO Flanges
  • ASME/ANSI B16.5 Class 600 SO Flanges
  • ASME/ANSI B16.5 Class 900 SO Flanges
  • BS 3293 Class 150 SO Flanges
  • BS 3293 Class 300 SO Flanges
  • BS 3293 Class 600 SO Flanges
  • DIN 86029 PN 10 SO Flanges
SS Slip On Flange CS Slip On Flange Alloy Steel Slip On Flange F5 Slip On Flange
F11 Slip On Flange F22 Slip On Flange F12 Slip On Flange F91 Slip On Flange
SS 304 Slip On Flange SS 304L Slip On Flange SS 316 Slip On Flange SS 316L Slip On Flange
SS 317 Slip On Flange SS 317L Slip On Flange SS 321 Slip On Flange SS 347H Slip On Flange
SS 904L Slip On Flange Duplex Slip On Flange S31803 Slip On Flange S32205 Slip On Flange
Monel 400 Slip On Flange Monel K500 Slip On Flange Inconel Slip On Flange Super Duplex Slip On Flange
S32205 Slip On Flange S32760 Slip On Flange F51 Slip On Flange F53 Slip On Flange
A694 F42 Slip On Flange A694 F46 Slip On Flange A694 F52 Slip On Flange A694 F56 Slip On Flange
A694 F60 Slip On Flange A694 F65 Slip On Flange A694 F70 Slip On Flange A350 LF2 Slip On Flange
A350 LF3 Slip On Flange A707 L1 Slip On Flange A707 L2 Slip On Flange A707 L3 Slip On Flange
A105 Slip On Flange F904L Slip On Flange Inconel 625 Slip On Flange Incoloy 800 Slip On Flange
Incoloy 800H Slip On Flange Incoloy 800HT Slip On Flange Hastelloy Slip On Flange Hastelloy B2 Slip On Flange
Hastelloy B3 Slip On Flange Hastelloy C22 Slip On Flange Hastelloy C276 Slip On Flange KOC approved Slip On Flange
KNPC approved Slip On Flange Aaramco approved Slip On Flange    

We are a quality provider of the Slip on flange (SORF) which is widely used establish connection of pipes and deliver maximum level of stability in the functionality of these vital structures. The high levels of mechanical support provided by this product are widely appreciated by our clients and the structural engineers directly involved in the complete process. We provide the leverage to our clients to make the order according to their specifications and requirements.

Our Slip on flanges have a number of dedicated buyers across the country and globally mainly due to the high levels of international industrial standards adhered to by us. The raw materials used have been tested and then used to confirm the robust and sturdy character of this product. Our product ensures accuracy and precision so that our clients get value for their money. Moreover, our range of SORF flanges or slip on flanges are offered at industry leading prices. The Slip on flange is an attachment fitting that is secured to the end of a pipe for installation purposes. The hardness of this product is thoroughly checked and a detailed quality report is prepared to counter the future complications involved in this industrial domain.

Source: Zhejiang Yaang Pipe Industry Co., Limited (

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