Fastech Global is the leading Weld Neck Flanges Supplier, Stockists & Supplier, dealer and Exporter in India. Fastech Global is known worldwide for its extensive high quality range of Buttwelded Pipe Fittings.
A flange is an external or internal ridge, or rim, for strength, as the flange of an iron beam such as an I-beam or a T-beam ; or for attachment to another object, as the flange on the end of a pipe, steam cylinder, etc., or on the lens mount of a camera or for a flange of a rail car or tram wheel . Thus flanged wheels are wheels with a flange on one side to keep the wheels from running off the rails . The term "flange" is also used for a kind of tool used to form Weld Neck Flanges. Pipes with Weld Neck Flanges can be assembled and disassembled easily.
Weld Neck Flanges are available in many different materials. Such as - Stainless Steel Weld Neck Flanges, Alloy Steel Weld Neck Flanges, Carbon Steel Weld Neck Flanges, Aluminium Weld Neck Flanges, Duplex Steel Weld Neck Flanges, Hastelloy Weld Neck Flanges, Incoloy Weld Neck Flanges, Inconel Weld Neck Flanges, Monel Weld Neck Flanges, Nickel Alloy Weld Neck Flanges, Nitronic Alloy Weld Neck Flanges, Titanium Weld Neck Flanges,
ANSI Flanges Class 150, ANSI Flanges Class 300, ANSI Flanges Class 400, ANSI Flanges Class 600, ANSI Flanges Class 900, ANSI Flanges Class 1500, ANSI Flanges Class 2500, ASTM Flanges Class 150, ASTM Flanges Class 300, ASTM Flanges Class 400, ASTM Flanges Class 600, ASTM Flanges Class 900, ASTM Flanges Class 1500, ASTM Flanges Class 2500, ASME Flanges Class 150, ASME Flanges Class 300, ASME Flanges Class 400, ASME Flanges Class 600, ASME Flanges Class 900, ASME Flanges Class 1500, ASME Flanges Class 2500,
Typical Design And Dimension
Technical Specification
| Nominal Pipe Size |
"A" (O.D.) |
"B" (Thk.) |
"C" (RF Dia.) |
"D" (B.C.D.) |
# Bolt Holes |
Dia. of Bolt Holes |
Approx. Weight |
| 1/2" | 3-3/4 | 9/16 | 1-3/8 | 2-5/8 | 4 | 5/8 | 2 |
| 3/4" | 4-5/8 | 5/8 | 1-11/16 | 3-1/4 | 4 | 3/4 | 3 |
| 1" | 4-7/8 | 11/16 | 2 | 3-1/2 | 4 | 3/4 | 4 |
| 1-1/4" | 5-1/4 | 3/4 | 2-1/2 | 3-7/8 | 4 | 3/4 | 6 |
| 1-1/2" | 6-1/8 | 13/16 | 2-7/8 | 4-1/2 | 4 | 7/8 | 7 |
| 2" | 6-1/2 | 7/8 | 3-5/8 | 5 | 8 | 3/4 | 8 |
| 2-1/2" | 7-1/2 | 1 | 4-1/8 | 5-7/8 | 8 | 7/8 | 12 |
| 3" | 8-1/4 | 1-1/8 | 5 | 6-5/8 | 8 | 7/8 | 16 |
| 3-1/2" | 9 | 1-3/16 | 5-1/2 | 7-1/4 | 8 | 7/8 | 21 |
| 4" | 10 | 1-1/4 | 6-3/16 | 7-7/8 | 8 | 7/8 | 28 |
| 5" | 11 | 1-3/8 | 7-5/16 | 9-1/4 | 8 | 7/8 | 37 |
| 6" | 12-1/2 | 1-7/16 | 8-1/2 | 10-5/8 | 12 | 7/8 | 48 |
| 8" | 15 | 1-5/8 | 10-5/8 | 13 | 12 | 1 | 79 |
| 10" | 17-1/2 | 1-7/8 | 12-3/4 | 15-1/4 | 16 | 1-1/8 | 122 |
| 12" | 20-1/2 | 2 | 15 | 17-3/4 | 16 | 1-1/4 | 183 |
| 14" | 23 | 2-1/8 | 16-1/4 | 20-1/4 | 20 | 1-1/4 | 241 |
| 16" | 25-1/2 | 2-1/4 | 18-1/2 | 22-1/2 | 20 | 1-3/8 | 315 |
| 18" | 28 | 2-3/8 | 21 | 24-3/4 | 24 | 1-3/8 | 414 |
| 20" | 30-1/2 | 2-1/2 | 23 | 27 | 24 | 1-3/8 | 515 |
| 24" | 36 | 2-3/4 | 27-1/4 | 32 | 24 | 1-5/8 | 800 |
| 1/16" raised face included in flange thickness. | |||||||