Stainless Steel Pipe Fittings Forged Butt Weld Flange Manufacturer

What is Butt Welding Flange?Butt Welding flange is also called high neck flange. It differs from flat welding flange in that there is a long and inclined high neck from the flange welding side to the flange. The wall thickness of this high neck along with the height and the direction gradually transitions to the thickness of the

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What is Butt Welding Flange?

Butt Welding flange is also called high neck flange. It differs from flat welding flange in that there is a long and inclined high neck from the flange welding side to the flange. The wall thickness of this high neck along with the height and the direction gradually transitions to the thickness of the pipe wall, which improves the discontinuity of stress and thus increases the flange strength.

Butt-welded flanges are mainly used in places with severe working conditions, such as where the pipe undergoes thermal expansion or other loads that cause the flange to undergo greater stress or repeated stress changes; pipes with large fluctuations in pressure and temperature or high temperature, high pressure, and Sub-zero temperature pipes.


ANSI B16.5 150LB Weld Neck Flanges

Ss Stainless Steel Pipe Fitting Forged Welding Neck Flange Manufacturer

Main Size:                                                                                                                         Unit: mm
SizePipe OD AODBolt CircleBolt HoleSealing FaceThicknessIDHT
InchDNBCBRRFT1
1/2"1521.39060.516x4351.69.915.53048
3/4"2026.91007016x4431.611.4213852
1"2533.711079.516x4511.612.9274956
1-1/4"3242.41158916x463.51.614.4355957
1-1/2"4048.312598.516x4731.615.9416562
2"5060.3150120.518x4921.617.9527864
2-1/2"6576.1180139.518x41051.620.9669070
3"8088.9190152.518x41271.622.477.510870
4"100114.3230190.518x8157.51.622.4101.513576
5"125139.725521622x81861.622.412716489
6"150168.3280241.522x82161.623.915419289
8"200219.1345298.522x82701.627.4203246102
10"25027340536226x123241.628.9255305102
12"300323.948543226x123811.630.4303.5365114
14"350355.653547629.5x124131.633.4333.5400127
16"400406.459554029.5x164701.635.4381457127
18"45045763557832.5x16533.51.638.4428.5505140
20"50050870063532.5x205841.641.4476559145
22"55055975069235.5x206411.644.4525610149
24"600610815749.535.5x206921.646.4575664152


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Ss Stainless Steel Pipe Fitting Forged Welding Neck Flange Manufacturer

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Ss Stainless Steel Pipe Fitting Forged Welding Neck Flange Manufacturer

Ss Stainless Steel Pipe Fitting Forged Welding Neck Flange Manufacturer
Ss Stainless Steel Pipe Fitting Forged Welding Neck Flange Manufacturer

Ss Stainless Steel Pipe Fitting Forged Welding Neck Flange Manufacturer

Our Advantage: 
1) Own Casting Foundry( Investment Lost - Wax Casting)
  - Heavy Strictly control of our production line, starting from casting wax.
  - Provide new products development
  - Shorter & Fast Delivery time
2) Experienced workers & sales team to save your money and time.
  - Wenzhou New Office -2019.6
3) Free Sample Available

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