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Slip-On Design for Easy Installation: The flange is manufactured with an inside diameter slightly larger than the pipe's outside diameter, allowing the pipe to slide through for effortless alignment and positioning before welding.
Dual-Weld Joint Integrity: Welded on both the inside and outside of the flange, this design offers superior mechanical strength and leak resistance compared to threaded connections, ensuring long-term reliability.
Premium Stainless Steel Construction: Available in 304/304L and 316L stainless steel, providing excellent resistance to corrosion, moisture, and chemicals in harsh industrial environments.
ASME B16.5 Compliant & Raised Face: Manufactured to ASME B16.5 standards with a standard raised face (0.06"/1.6mm), ensuring compatibility with standard gaskets and mating flanges for a proper seal.
The 38SL Slip On Flange operates on a slip-and-weld principle. The pipe is inserted through the flange bore until it reaches a specific depth, typically slightly past the flange face. The fitter then performs a fillet weld on both the inside and outside diameters of the joint. The raised face provides a precise sealing surface when compressed against a gasket and a mating flange using bolted connections. Unlike weld neck flanges, the slip-on design transfers less stress to the pipe wall, making it ideal for moderate pressure systems.
ASME B16.5 Certified Quality: All flanges are manufactured in compliance with ASME B16.5 and ASTM A182 standards, ensuring dimensional accuracy and material integrity.
Wide Size Range & Stock Availability: We offer a complete range of B38SL flange sizes from 1/2" to 24" Nominal Pipe Size, with ready stock for fast shipment to minimize project downtime.
Flexible Material Options: Choose between 304/304L for standard corrosion resistance or 316L for enhanced protection in marine and chemical environments.
Expert Technical Support: Our team provides in-depth application guidance for industrial, food processing, and petrochemical industries, ensuring you select the right flange for your system.
What does "Slip-On" mean for a flange?
A slip-on flange has an inside diameter slightly larger than the pipe's outside diameter, allowing the pipe to slide through the flange center. The pipe is then welded both inside and outside, providing a secure joint.
What is the difference between 304 and 316L stainless steel?
Both are chromium-nickel stainless steels. 316L contains added molybdenum, offering superior corrosion resistance against chlorides, saltwater, and acids, making it ideal for marine or chemical applications. 304 is suitable for general industrial use.
What standards does the 38SL flange meet?
The 38SL Series is manufactured to ASME B16.5 and ASTM A182 specifications, with a raised face (RF) surface finish and Class 150 pressure rating.
How is a slip-on flange installed?
The pipe is inserted through the flange, and a fillet weld is applied to both the interior and exterior of the joint. This dual-weld method ensures structural integrity and prevents leakage in moderate-pressure systems
