ASA 150 Flange Dimensions – Size Chart, Thickness & IS 1538 Specifications

ASA 150 flanges, also known as 150 class flanges, are essential components used in piping systems for low-pressure applications. Manufactured according to international and Indian standards like IS 1538, these flanges ensure tight sealing and mechanical strength in both industrial and plumbing applications.

What is ASA 150 Flange?

ASA 150# flanges are designed to withstand pressures up to 150 pounds per square inch (PSI). These flanges are commonly used for water, gas, and chemical pipeline connections. The '150' refers to the pressure class, and the design typically follows ANSI or IS 1538 standards.

ASA 150 Flange Dimensions in MM

The 150 class flange dimensions in mm vary by nominal bore size. Below is a summary:

Note: Full ASA 150 flange table is available in PDF upon request.

ASA 150 Flange Thickness

The asa 150 flange thickness increases with pipe size. For instance, a 15 NB flange is typically 11mm thick, while a 100 NB flange is 19mm. The thickness ensures durability and proper sealing under specified pressure.

Comparison with MS Puddle Flanges

While ASA 150 flanges are used for sealing between pipe connections, MS puddle flanges are designed to prevent water ingress where pipes pass through concrete structures. They serve different purposes:

• ASA 150 Flange: Pressure-rated pipe joint flange
• MS Puddle Flange: Waterproofing ring in civil construction

IS 1538 Flange Standard

The IS 1538 flange standard outlines the manufacturing, dimensioning, and material specifications for mild steel pipe flanges in India. It aligns with ASA 150 specifications for low-pressure systems. Following IS 1538 ensures compatibility, safety, and quality.

ASA 150 Flange Chart (Quick Reference)

Below is a summarized asa 150 flange chart for reference:

• Pressure Class: 150 lbs
• Sizes: 15 NB to 300 NB
• Material: Mild Steel, Carbon Steel, Stainless Steel
• Application: Plumbing, Firefighting, HVAC, Industrial piping

Conclusion

ASA 150 flanges are a vital component in many low-pressure piping systems. Understanding their size, thickness, and standards like IS 1538 ensures proper usage and safety. Whether you need technical information, a full ASA 150 flange table, or want to compare them with puddle flanges, this guide serves as your comprehensive reference.

FAQs

Q1: What is the difference between ASA 150 flange and MS puddle flange?

A: ASA 150 is for pipe connections; MS puddle flange is used in waterproofing where pipes pass through concrete.

Q2: What are the standard ASA 150 flange thicknesses?

A: Thickness ranges from 11mm to 20mm depending on the bore size.

Q3: Where can I find an ASA 150 flange chart PDF?

A: Contact our sales team or download the full PDF from our technical resources section.