Zhejiang Yuhao Stainless Steel Co., Ltd
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304, 304L, 306, 306L, 316 Stainless Steel Class 150 to 2500 Weld Neck Flange
►Product Description
A weld neck flange features a long tapered hub that smoothly connects to the pipe or fitting via butt welding, where the pipe end is inserted into the flange and welded around its circumference. This ensures a robust, leak-proof joint, while the hub reinforces the flange, reducing susceptibility to distortion or damage. Commonly used in high-strength applications such as petrochemical, oil and gas, and power generation industries, weld neck flanges are available in materials like carbon, stainless, and alloy steel to meet diverse operational needs.
►Product Size
| DN | Pipe OD | Connection Size | Flange Thickness(mm) C | Flagne ID | |||
| A | B | Flange OD | Bolt Hole Circle Diameter | A | B | ||
| 10 | 17.2 | 14 | 90 | 60 | 14 | 18 | 15 |
| 15 | 21.3 | 18 | 95 | 65 | 14 | 22.5 | 19 |
| 20 | 26.9 | 25 | 105 | 75 | 16 | 27.5 | 26 |
| 25 | 33.7 | 32 | 115 | 85 | 16 | 34.5 | 33 |
| 32 | 42.4 | 38 | 140 | 100 | 18 | 43.5 | 39 |
| 40 | 48.3 | 45 | 150 | 110 | 18 | 49.5 | 46 |
| 50 | 60.3 | 57 | 165 | 125 | 19 | 61.5 | 59 |
| 65 | 76.1 | 76 | 185 | 145 | 20 | 77.5 | 78 |
| 80 | 88.9 | 89 | 200 | 160 | 20 | 90.5 | 91 |
| 100 | 114.3 | 108 | 220 | 180 | 22 | 116 | 110 |
| 125 | 139.7 | 133 | 250 | 210 | 22 | 143.5 | 135 |
| 150 | 168.3 | 159 | 285 | 240 | 24 | 170.5 | 161 |
| 200 | 219.1 | 219 | 340 | 295 | 24 | 221.5 | 222 |
| 250 | 273 | 273 | 395 | 350 | 26 | 276.5 | 276 |
| 300 | 323.9 | 325 | 445 | 400 | 26 | 328 | 328 |
| 350 | 355.6 | 377 | 505 | 460 | 28 | 360 | 381 |
| 400 | 406.4 | 426 | 565 | 515 | 32 | 411 | 430 |
| 450 | 457 | 480 | 615 | 565 | 36 | 462 | 485 |
| 500 | 508 | 530 | 670 | 620 | 38 | 513.5 | 535 |
| 600 | 610 | 630 | 780 | 725 | 42 | 616.5 | 636 |
►Shot Shoot
►FAQ
Q1:Delivery time?
A:1- 7 days for small order.10- 20 days for big order.
Q2.Can you supply what's the service?
A: We can supply the kinds of matel raw materies and products,such as pipes,pipe fittings,flanges,coil,sheet,round bar and so on...
Q3: What about your delivery time if we placed order?
A: We have large of ready stock,in general we can delivery within 2-10days.
Q4: How do you ensure product quality?
A: We have a dedicated team of experts who rigorously inspect each stage of the production process. Every product undergoes quality testing at our factory before it is shipped.
Q5: How long is your production lead time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.