ANSI & ASME B16.5 Pipe Flanges
What's the difference between ANSI B16.5 and ASME B16.5 standards?
The B16.5 standard was first published by ANSI in 1973. Prior to that it was an ASA standard. In 1996 the standard changed to ASME B16.5. For 10 years prior to the change, the standard included both and was listed as ANSI/ASME B16.5.
So what's the difference? The answer is there is no difference. The ASA, ANSI and ASME have continually refined and broadened the B16.5 standard. I'm sure there is a committee working on future enhancements right now.
The current and correct standard is ASME B16.5. ANSI B16.5 is common industry lingo and is still referred to extensively by architects, engineers, manufacturers and suppliers. And although the ANSI B16.5 standard does not technically exist, it its understood as another way to say ASME B16.5.
The B16.5 Standard defines the following:
- Pressure/Temperature Ratings
- Pressure Testing
Hayward Pipe distributes industrial and commercial flanges in all the materials listed below. We work with manufacturers in the US and globally to insure the highest quality products and the fastest delivery times.
Follow the links below for flange dimensions.
Common produced materials:
ASTM A105 & A105N Forged Carbon Steel
ASTM A182 F11 & F22 Chrome
ASTM A182 F304/304L, F316/316L
ASTM A350 LF2
These materials have limited "off the shelf" availability and can be made to order.
ASTM A182 Stainless Steel F309, F310, F317, F321 & F347
ASTM A182 Chrome F1, F5, F9 & F91
ASTM A182 Duplex Stainless Steel 2205 & 2507
ASTM B241 Aluminum 6061-T6
ASTM B462 Alloy 20
ASTM B564 Alloy C22, C276, A400, A600, A625, A800 & A825