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Product Details:
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| Face: | FF RF Rtj | Size: | 1" |
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| Surface: | Varnished Transparent Oil, Rust-proof Oil, Hot Galvanizing | Standard: | ANSI, DIN, GB, JIS, GOST |
| Pressure: | 150lbs | Type: | Weld Neck, Slip On, Blind, Socket Welded, Threaded |
| High Light: | SCH 160 Weld Neck Pipe Flanges,JIS Weld Neck Pipe Flanges,SCH 160 4 Inch Weld Neck Flange |
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304 F304 Wn RF Rtj FF ANSI JIS DIN Cl150 Pn10 Pn16 Forged Stainless Steel Weld Neck Flange
WN Flange (Weld neck Flange) is one of the most commonly used flange in the piping industry. They are easy to recognize with their long tapered hub that is matched to the wall thickness (bore) of the pipe.
Weld neck flange and long weld neck flange provide reinforcement in application requiring high pressure and during low and high pessure extremes. It also helps in low cycle fatigue caused by line expansion of other variable forces.
Weld neck flange bore is machined to match the size of the pipe or fitting. This creates a smooth transition to and from the weld neck flange and prevents turbulence at the welding neck. Hence it is important to specify the pipe schedule at the time of buying a weld neck flange. Weldneck flange is welded to pipe with full penetration weld and provides excellent stress distribution through tapered neck.
Weld neck flange is available in both raised face and flat face configuration. Most common weld neck flanges have standard bore or extra heavy bore. Sch 120 or Sch 160 bore weld neck flanges, in heavier weights such as 600# to 1500# are also common in weld neck flange.
Weld Neck Flange Description
Material: Carbon, Alloy and Stainless Steel
Standards: ASTM A105, ASTM A182
Sizes: 1/2'' to 24'', Customized up to 48''
Thickness: Schedule 10(S) to SCH 160
Pressure Ratings: Class 150 to 2500
Face Type: RF, RTJ
Standards for Weld Neck(WN) Flange
Material Standards
ASTM A105/N For carbon steel weld neck flange
ASTM A182 F11, F22 for alloy steel
ASTM A182 F304 / F304L, F316 / F316L for stainless steel weld neck flange.
Manufacturing Standards
ASME B16.5
ASME B16.47
BS 3293
DIN 2630 PN 1 and PN 2.5, 2631 PN 6, 2632 PN 10, 2634 PN 16, 2634 PN 25, 2635 PN 40
Applications and Features of Weld Neck Flange
Weld neck flange mainly used in medium, high pressure pipes connecting, most butt weld neck flange with neck also called nipple flange.
Therefore, the installation cost of the weld neck flange, labor costs and auxiliary materials costs are higher, because there is more than one process.
Dimensions of Weld Neck Flange
| Size in Inch | Size in mm | No of Bolts | Bolt Size UNC | Machine Bolt Length | RF Stud Length | Hole Size | ISO Stud Size | Weight in kg |
| 1/2 | 15 | 4 | 1/2 | 50 | 55 | 5/8 | M14 | 0.6 |
| 3/4 | 20 | 4 | 1/2 | 50 | 65 | 5/8 | M14 | 0.9 |
| 1 | 25 | 4 | 1/2 | 55 | 65 | 5/8 | M14 | 1.4 |
| 1 1/4 | 32 | 4 | 1/2 | 55 | 70 | 5/8 | M14 | 1.4 |
| 1 1/2 | 40 | 4 | 1/2 | 65 | 70 | 5/8 | M14 | 1.8 |
| 2 | 50 | 4 | 5/8 | 70 | 85 | 3/4 | M16 | 2.7 |
| 2 1/2 | 65 | 4 | 5/8 | 75 | 90 | 3/4 | M16 | 3.7 |
| 3 | 80 | 4 | 5/8 | 75 | 90 | 3/4 | M16 | 4.6 |
| 3 1/2 | 90 | 8 | 5/8 | 75 | 90 | 3/4 | M16 | 5.5 |
| 4 | 100 | 8 | 5/8 | 75 | 90 | 3/4 | M16 | 6.8 |
| 5 | 125 | 8 | 3/4 | 85 | 95 | 7/8 | M20 | 8.7 |
| 6 | 150 | 8 | 3/4 | 85 | 100 | 7/8 | M20 | 10.9 |
| 8 | 200 | 8 | 3/4 | 90 | 110 | 7/8 | M20 | 17.7 |
| 10 | 250 | 12 | 7/8 | 100 | 115 | 1 | M24 | 24 |
| 12 | 300 | 12 | 7/8 | 100 | 120 | 1 | M24 | 37 |
| 14 | 350 | 12 | 1 | 115 | 135 | 1 1/8 | M27 | 50 |
| 16 | 400 | 16 | 1 | 115 | 135 | 1 1/8 | M27 | 64 |
| 18 | 450 | 16 | 1 1/8 | 125 | 145 | 1 1/4 | M30 | 68 |
| 20 | 500 | 20 | 1 1/8 | 140 | 160 | 1 1/4 | M30 | 82 |
| 24 | 600 | 20 | 1 1/4 | 150 | 170 | 1 3/8 | M33 | 118 |
Contact Person: Mr. Janson
Tel: 0086-317-5298199
Fax: 86-317-5295979
