LWNRF FLANGES
LWNRF FLANGES
(OP)
What is the code/standard that is followed for the manufacture of Long Weld Neck Raised Face (LWNRF) flanges?
The following dimensions of LWNRF flanges are as per ASME / ANSI B16.5 standard: -
- Diameter of flange
- Thickness of flange
- Raised face of flange
- Diameter of bolt circle
- Diameter of bolt holes
- Number of bolts
Neck thickness or bore of Weld Neck Raised Face (WNRF) flanges matches with the pipe schedule, which conforms to ASME B36.10 standard.
To what standard does neck thickness and bore of Long Weld Neck Raised Face (LWNRF) flanges conform to?
The following dimensions of LWNRF flanges are as per ASME / ANSI B16.5 standard: -
- Diameter of flange
- Thickness of flange
- Raised face of flange
- Diameter of bolt circle
- Diameter of bolt holes
- Number of bolts
Neck thickness or bore of Weld Neck Raised Face (WNRF) flanges matches with the pipe schedule, which conforms to ASME B36.10 standard.
To what standard does neck thickness and bore of Long Weld Neck Raised Face (LWNRF) flanges conform to?





RE: LWNRF FLANGES
Normally the bore is exactly equal to the nominal diameter and the neck outer diameter is the same as the X dimension of B16.5.
If you find a vendor with pieces on stock, then they will give you the dimensions they have, but normally LWN's are fabricated on demand, at least in my experience.
prex
http://www.xcalcs.com
Online tools for structural design
RE: LWNRF FLANGES
• Forged Vessel Connections: Long weld necks, heavy barrels, etc. Where to buy them. http://www.forgedvesselconn.com/
• Lenape Forge, Inc.: Lenape's comprehensive 135,000 square foot plant can meet nearly any forging need. On-site operations include forging, heat treating, machining and physical/chemical testing. http://www.lenapeforge.com/
• Longweldneck.com: Online catalog for long weld necks, heavy barrels, etc.
RE: LWNRF FLANGES
RE: LWNRF FLANGES
RE: LWNRF FLANGES
ASME B16.47 covers Series "A" and "B" flanges (Weld Neck, Slip-On & Blind) of large diameter above 24 inches.
RE: LWNRF FLANGES
the Schedules of matching piping must be included in the Std.
gb
RE: LWNRF FLANGES
http://www.texasflange.com/catalog.pdf
RE: LWNRF FLANGES
• Forged Vessel Connections: Long weld necks, heavy barrels, etc. Where to buy them. http://www.forgedvesselconn.com/
• Lenape Forge, Inc.: Lenape's comprehensive 135,000 square foot plant can meet nearly any forging need. On-site operations include forging, heat treating, machining and physical/chemical testing.
http://www.lenapeforge.com/
• Longweldneck.com: Online catalog for long weld necks, heavy barrels, etc.
http://www.longweldneck.com/