Slip-On Flanges – ASME/ANSI B16.5

VikTech Fittings is a trusted manufacturer, exporter, and supplier of Slip-On Flanges, designed in compliance with ASME/ANSI B16.5 and B16.47 standards. Our Slip-On Flanges are widely used in low to medium pressure pipelines, where quick installation, cost efficiency, and moderate strength are required.

These flanges are slipped over the pipe and fillet welded on the inner and outer sides, making them easier to install compared to Weld Neck Flanges. Available in a variety of materials, pressure classes, and facing types, Slip-On Flanges supplied by VikTech Fittings are known for their reliability, durability, and competitive pricing.

Types of Slip-On Flanges

• Raised Face Slip-On Flanges (RF-SO)

• Flat Face Slip-On Flanges (FF-SO)

• Ring Type Joint Slip-On Flanges (RTJ-SO)

• Large Diameter Slip-On Flanges (Series A & B)

• Custom Slip-On Flanges (made to drawing / OEM requirements)

Materials & Grades

Carbon Steel

• ASTM A105 / A105N

• ASTM A350 LF2 (Low Temperature)

• ASTM A694 F42 – F70

Stainless Steel

• ASTM A182 F304 / 304L

• ASTM A182 F316 / 316L

• ASTM A182 F321 / 347

Duplex & Super Duplex

• UNS S31803 / S32205 (Duplex 2205)

• UNS S32750 / S32760 (Super Duplex 2507)

Alloy Steel

• ASTM A182 F1, F5, F9, F11, F22, F91

Nickel & Special Alloys

• Inconel 600 / 625 / 800 / 825

• Monel 400 / K500

• Hastelloy C22 / C276

• Alloy 20

• Titanium Gr.2 / Gr.5

• Cu-Ni 70/30, 90/10

Advantages

• Easy to install and align

• Cost-effective compared to Weld Neck Flanges

• Available in multiple materials & pressure classes

• Suitable for low to medium pressure applications

• Manufactured as per international standards

Applications

• Oil & Gas Transmission Lines

• Petrochemical & Refinery Plants

• Power Plants & Boilers

• Shipbuilding & Marine Systems

• HVAC & Firefighting Networks

• Water Treatment & Desalination

Technical Specifications

Standard ASME/ANSI B16.5, B16.47 Series A/B, MSS SP-44, API 605

Size Range½” (DN15) to 48” (DN1200)Pressure ClassClass 150, 300, 600, 900, 1500, 2500

Facing TypesRaised Face (RF), Flat Face (FF), Ring Type Joint (RTJ)

Thickness (Schedules)SCH 10, 20, 40, 60, 80, 160, XXS

TestingPMI, Ultrasonic, Hydro Test, NDT, NACE MR0175, IBR/Third Party Inspection

CertificationEN 10204 3.1 / 3.2, ISO, CE