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Slip-On Flanges

Slip-on flanges are slipped over the pipe and welded both inside and outside, offering sufficient strength and leak prevention. They are a cost-effective alternative to weld neck flanges, requiring less precision in pipe cutting.

These flanges are preferred for their ease of installation and lower cost, making them ideal for low to moderate pressure applications in industries such as oil and gas, water treatment, and construction.

Slip-On Flanges

Slip-on flanges are designed for straightforward installation, sliding over the pipe and secured with internal and external welds to ensure a robust, leak-proof connection. Their cost-effectiveness and reduced need for precise pipe length cutting make them a popular choice over weld neck flanges in less demanding applications. While not suited for high-stress environments, slip-on flanges provide reliable performance in systems with moderate pressure and temperature requirements.

Key Properties of Slip-On Flanges

  • Ease of Installation: Slides over pipe, requiring less precise cutting.
  • Cost-Effective: Lower cost compared to weld neck flanges.
  • Leak Prevention: Dual welds (inside and outside) ensure a secure seal.
  • Versatility: Suitable for low to moderate pressure applications.

Common Grades and Equivalents

Slip-on flanges are manufactured to meet industry standards, ensuring compatibility and performance in various piping systems.

Grade/Standard Equivalent Application
ASTM A105, ANSI B16.5 Carbon steel General piping, oil and gas
ASTM A182 F304/F316 Stainless steel Chemical processing, food industry
ASTM A350 LF2 Low-temperature carbon steel Low-temperature piping systems

Applications of Slip-On Flanges

Slip-on flanges are widely used in industries requiring cost-effective and reliable piping connections:

  • Oil and Gas: Used in low-pressure pipelines and distribution systems.
  • Water Treatment: Connects pipes in treatment and distribution networks.
  • Construction: Supports plumbing and HVAC systems.
  • Food Processing: Ensures hygienic connections in processing lines.

Specifications

Properties Values & Limits
Material Carbon Steel, Stainless Steel, Alloy Steel
Standards ASME B16.5, ANSI B16.47, MSS-SP-44
Connection Double Weld (Internal and External)
Size Range 1/2" to 24" (Standard), up to 48" (Custom)
Pressure Rating 150#, 300#, 600#, 900#

Considerations for Use

  • Pressure Limitations: Not suitable for high-pressure or high-stress applications.
  • Welding Quality: Ensure proper internal and external welds to prevent leaks.
  • Material Compatibility: Select materials to match pipe and fluid properties to avoid corrosion.