ASME B16.47 Standard-Large Diameter Steel Flanges (NPS 26 Through NPS 60)

ASME B16.47 Standard covers pressure-temperature ratings, materials, dimensions, tolerances, marking, and testing for pipe flanges in sizes NPS 26 through NPS 60.
Included are flanges with rating class designations 75, 150, 300, 400, 600,and 900 with requirements given in both SI(Metric)and U.S.Customary units,with diameter of bolts and flange bolt holes expressed in inch units.

This Standard is limited to
(a)flanges made from cast or forged materials
(b)blind flanges made from cast,forged,or plate materials (see Tables 1 and 2) Also included in this Standard are requirements and recommendations regarding flange bolting,flange
gaskets,and flange joints.

Weld Neck Flange RF ASME B16.47 Series A A105

ASME B16.47 Standard provides two series of flange dimensions. Series A specifies flange dimensions for general use flanges.Series B specifies flange dimensions for compact flanges that,in most cases,have smaller bolt circle diameters than Series A flanges. These two series of flanges are,in general,not interchangeable. The user should recognize that some flanged valves,
equipment bolted between flanges,and flanged equipment may be compatible with only one series of these flanges.

• Series A: Previously covered by MSS SP-44, these are heavier and thicker, offering higher strength and pressure capacity, ideal for high-stress environments such as oil and gas pipelines.
• Series B: Previously defined in API 605, these are lighter and have smaller bolt circle diameters, often used in less demanding applications.

Haihao Group can provide a variety ASME B16.47 standard flange,as follows:

• ASME B16.47 Class 150 Series A Flange
• ASME B16.47 Class 300 Series A Flange
• ASME B16.47 Class 400 Series A Flange
• ASME B16.47 Class 600 Series A Flange
• ASME B16.47 Class 900 Series A Flange
• ASME B16.47 Class 75 Series B Flange
• ASME B16.47 Class 150 Series B Flange
• ASME B16.47 Class 300 Series B Flange
• ASME B16.47 Class 400 Series B Flange
• ASME B16.47 Class 600 Series B Flange
• ASME B16.47 Class 900 Series B Flange

Applications of ASME B16.47 Flanges

These large-diameter flanges are vital for connecting pipes in:

• Oil & Gas Industry: Used in pipelines transporting crude oil, natural gas, and refined products.
• Petrochemical Plants: Essential for high-pressure and high-temperature applications.
• Water Supply Systems: Used in large-scale water treatment and distribution projects.
• Power Generation: Suitable for steam lines and other high-temperature processes.

At Haihao Group, we specialize in manufacturing high-quality ASME B16.47 flanges tailored to meet the needs of demanding industries. Our flanges are:

• Customizable: Available in Series A or Series B, with material and pressure options to match your project requirements.
• Certified: Produced in compliance with ASME standards, ensuring reliability and safety.
• Durable: Made from premium materials for long-lasting performance in challenging environments.
• Globally Delivered: Shipped worldwide, with meticulous attention to logistics and timely delivery.