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| Categories | Stainless Steel Flanges |
|---|---|
| Brand Name: | Yuhao |
| Model Number: | flanges |
| Certification: | ISO, API, BV, CE ... |
| Place of Origin: | China |
| MOQ: | 100KGS |
| Price: | Negotation |
| Payment Terms: | L/C,D/A,D/P,T/T,Western Union,MoneyGram |
| Supply Ability: | 2000tons/per month |
| Delivery Time: | 2-10 work days |
| Packaging Details: | They are usually packed in conventional export wooden cases. |
| Material: | 304, 304L, 306, 306L, 316, 316L |
| Application: | Connection, Decoration, oil and gas, Automative, New Energy |
| Standard: | ASTM, AISI, GB, JIS |
| Flange face type: | RF (Raised Face), RTJ (Ring Type Joint) |
| Package: | Standard Seaworthy Packagel, wooden cases... |
| Connection: | Welding |
| Pressure: | Class150/300/600/9001500/2500 |
| Dimensions: | 1/2”, 2”, 3”, 4”, 6”, 8”, 10”, up to 24” |
| Company Info. |
| Zhejiang Yuhao Stainless Steel Co., Ltd |
| Verified Supplier |
| View Contact Details |
| Product List |
| Attribute | Value |
|---|---|
| Material | 304, 304L, 306, 306L, 316, 316L |
| Application | Connection, Decoration, oil and gas, Automotive, New Energy |
| Standard | ASTM, AISI, GB, JIS |
| Flange face type | RF (Raised Face), RTJ (Ring Type Joint) |
| Package | Standard Seaworthy Packaging, wooden cases |
| Certification | ISO, API, BV, CE |
| Connection | Welding |
| Pressure | Class150/300/600/9001500/2500 |
| Dimensions | 1/2", 2", 3", 4", 6", 8", 10", up to 24" |
| Brand Name | Yuhao |
A weld neck flange is easily recognized by its extended, tapered hub, which is purposefully designed for butt welding to a pipe or fitting. This welding technique involves precise alignment of the flange with the pipe, followed by a full penetration weld at the junction, resulting in a strong, permanent connection. The tapered hub plays a critical role by providing a smooth transition for stress between the flange and the pipe, effectively minimizing the chances of deformation, fatigue, or mechanical failure under demanding conditions.
Commonly used in high-stakes industries such as oil and gas transmission, petrochemical facilities, and power plants, weld neck flanges are valued for their ability to perform reliably in high-pressure and high-temperature environments. They are manufactured from a wide range of materials—including carbon steel, stainless steel, and alloy steels—to meet varying operational requirements, withstand harsh environmental conditions, and comply with industry regulations.
| DN | Pipe OD | Connection Size | Flange Thickness(mm) | C | Flange ID |
|---|---|---|---|---|---|
| 10 | 17.2 | 14 | 90 | 60 | 14 |
| 15 | 21.3 | 18 | 95 | 65 | 14 |
| 20 | 26.9 | 25 | 105 | 75 | 16 |
| 25 | 33.7 | 32 | 115 | 85 | 16 |
| 32 | 42.4 | 38 | 140 | 100 | 18 |
| 40 | 48.3 | 45 | 150 | 110 | 18 |
| 50 | 60.3 | 57 | 165 | 125 | 19 |
| 65 | 76.1 | 76 | 185 | 145 | 20 |
| 80 | 88.9 | 89 | 200 | 160 | 20 |
| 100 | 114.3 | 108 | 220 | 180 | 22 |
| 125 | 139.7 | 133 | 250 | 210 | 22 |
| 150 | 168.3 | 159 | 285 | 240 | 24 |
| 200 | 219.1 | 219 | 340 | 295 | 24 |
| 250 | 273 | 273 | 395 | 350 | 26 |
| 300 | 323.9 | 325 | 445 | 400 | 26 |
| 350 | 355.6 | 377 | 505 | 460 | 28 |
| 400 | 406.4 | 426 | 565 | 515 | 32 |
| 450 | 457 | 480 | 615 | 565 | 36 |
| 500 | 508 | 530 | 670 | 620 | 38 |
| 600 | 610 | 630 | 780 | 725 | 42 |
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