20" WN-ST A105N CL.300 SCH.40 B16.5 Carbon Steel Weld Neck Small Tongue Flange
Product Information
| Product Name | 20" WN-ST A105N CL.300 SCH.40 B16.5 Carbon Steel Weld Neck Small Tongue Flange |
| Size Range | 20“ |
| Pressure Class | Class 300 |
| Standards | ASTM A105N |
| Face Type | WN Small Tongue |
| Specification | ANSI B16.5 |
| Coating | Anti-rust Paint, Could and Hot Dip Galvanized, Zinc Plated, Yellow Transparent, Oil Black Paint |
Face Type: Tongue
Connections made with flanges help in creating an efficient channel to transport fluids and gases in the industry. A Tongue And Groove Flange is produced with a raised ring that may possess machined depression in its face. These flanges allow for a watertight connection to be formed between the piping equipment.
A groove or a tongue flange is generally designed in stainless or carbon grades. The Stainless Steel Tongue And Groove Flange possess excellent corrosion resistance properties. These flanges work well across high temperature and pressure conditions. These flanges are reliable to work in these extreme conditions. A Carbon Steel Tongue And Groove Flange are produced with a higher content of carbon, allowing the flanges to possess moderate strength. They are, however; susceptible to corrosion when exposed to harsh conditions for long periods.
Flange Type: Weld Neck (WN)
A weld neck flange, also called a tapered hub flange or high-hub flange, is a kind of flange that can relocate stress to the pipes, ensuring a decrease in high-stress concentration at the bottom of the flange. There are two welding neck flanges designs – the first type is used with pipes while the second, longer type cannot be used with pipes but with a process plant. The weld neck flange comprises of a round fitting that extends beyond the rim of the circumference. These flanges, typically manufactured from forging, are actually welded to pipes.
ASTM A105/A105N
ASTM A105 flanges are forged carbon steel flanges for ambient-and higher-temperature service in pressure systems. These flanges may be manufactured in accordance with a variety of standard specifications covering ASME B16.5, ASME B16.47, ASME B16.48, ASME B16.36, MSS SP 44, API 605, and API 6A, etc. Flanges made to ASTM A105 material are limited a maximum weight of 4540 kg.
ASTM A105 and A105N steel flanges are not same, they have same raw materials, same steel grades, but different heat treatment requirement. N means Normalization heat treatment, and A105 flange haves no heat treatment requirement. In summary, the ASTM A105 flange and ASTM A105N flange have a same chemical composition, but the A105N have a better mechanical property and usually used in critical situation.
ASTM A105 Chemical Composition (%)
| Steel Class | C max | Si | Mn | P max | S max | Ni max | Cr max | Mo max | V max |
| A105 | 0.35 | 0.10-0.35 | 0.60-1.05 | 0.035 | 0.040 | 0.40 | 0.30 | 0.12 | 0.08 |
ASTM A105 Mechanical Properties
| Steel Class | Tensile Strength min (MPa) | Yield Strength min (MPa) | Elongation min (%) | Reduction of Area min (%) | Hardness (HBW) |
| A105 | 485 | 250 | 22 | 30 | 137-187 |
ANSI B16.5 Flange Dimensions - Class 300
| Nominal Size | Outside Dia. | Thickness | Length thru Hub | Dia. of Hub | Raised Face Dia. | Corner Radius of Bore | Depth of Socket | Counter Bore | Thread Length | Bolt Holes |
| WN | SO SW TR | LJ | LJ | SW | TR | Bolt Circle Dia. | No | Dia. |
| A | B | O | t | Y1 | Y2 | Y3 | X | R | r1 | D | B4 | Q | C | H |
| 15 | 1/2 | 95 | 14.3 | 52.3 | 22 | 38.0 | 35.1 | 3 | 10 | 23.5 | 15.7 | 66.5 | 4 | 16 |
| 20 | 3/4 | 117 | 15.8 | 57.2 | 25 | 48.0 | 42.9 | 3 | 11 | 29.0 | 15.7 | 82.6 | 4 | 19 |
| 25 | 1 | 124 | 17.6 | 62.0 | 27 | 54.0 | 50.8 | 3 | 13 | 36.0 | 17.5 | 88.9 | 4 | 19 |
| 32 | 1-1/4 | 133 | 19.1 | 65.0 | 27 | 63.4 | 63.5 | 5 | 14 | 44.5 | 20.6 | 98.6 | 4 | 19 |
| 40 | 1-1/2 | 155 | 20.6 | 6.3 | 30 | 70.0 | 73.2 | 6 | 16 | 50.5 | 22.4 | 114.3 | 4 | 22 |
| 50 | 2 | 165 | 22.4 | 69.8 | 33 | 84.0 | 91.9 | 8 | 18 | 63.5 | 28.4 | 127.0 | 8 | 19 |
| 65 | 2-/21 | 190 | 25.4 | 76.2 | 38 | 100 | 104.6 | 8 | 19 | 76.0 | 31.8 | 149.4 | 8 | 22 |
| 80 | 3 | 210 | 28.5 | 79.2 | 43 | 117 | 127.0 | 10 | 21 | 92.0 | 31.8 | 168.1 | 8 | 22 |
| 90 | 3-1/2 | 229 | 30.3 | 81.0 | 44 | 133 | 139.7 | 10 | | 105.0 | 36.6 | 184.2 | 8 | 22 |
| 100 | 4 | 254 | 31.8 | 85.9 | 48 | 146 | 157.2 | 11 | | 118.0 | 36.6 | 200.2 | 8 | 22 |
| 125 | 5 | 279 | 35.1 | 98.6 | 51 | 178 | 185.7 | 11 | | 145.0 | 42.9 | 235.0 | 8 | 22 |
| 150 | 6 | 318 | 36.6 | 98.6 | 52 | 206 | 215.9 | 13 | | 171.0 | 46.0 | 269.7 | 12 | 22 |
| 200 | 8 | 381 | 41.2 | 111.3 | 62 | 260 | 269.7 | 13 | | 222.0 | 50.8 | 330.2 | 12 | 26 |
| 250 | 10 | 444 | 47.8 | 117.3 | 67 | 95 | 321 | 323.8 | 13 | | 276.0 | 55.6 | 387.4 | 16 | 29 |
| 300 | 12 | 520 | 50.8 | 130.0 | 73 | 102 | 375 | 381.0 | 13 | | 329.0 | 60.5 | 450.8 | 16 | 32 |
| 350 | 14 | 585 | 53.9 | 142.7 | 76 | 111 | 425 | 412.8 | 13 | | 360.0 | 63.5 | 514.4 | 20 | 32 |
| 400 | 16 | 650 | 57.2 | 146.0 | 83 | 121 | 483 | 469.9 | 13 | | 411.0 | 68.3 | 571.5 | 20 | 35 |
| 450 | 18 | 710 | 60.5 | 158.8 | 89 | 130 | 533 | 533.4 | 13 | | 462.0 | 69.8 | 628.6 | 24 | 35 |
| 500 | 20 | 775 | 63.5 | 162.1 | 95 | 140 | 587 | 584.2 | 13 | | 513.0 | 73.2 | 685.8 | 24 | 35 |
| 600 | 24 | 915 | 69.9 | 168.1 | 106 | 152 | 702 | 692.2 | 13 | | 614.0 | 82.6 | 812.8 | 24 | 42 |
| Nominal Size | Dimensions of Ring Joint Flanges | Weight (kg) |
| Groove Number | Dia. of Raised Portion | Pitch Dia. | Depth | Width | Radius at Bottom | WN Sch 40 | SO | BL | SW Sch 40 | LJ | TR |
| A | B | K | P | E | F | r2 |
| 15 | 1/2 | R11 | 51.0 | 34.14 | 5.56 | 7.14 | 0.8 | 0.75 | 0.65 | 0.65 | 0.66 | 0.71 | 0.65 |
| 20 | 3/4 | R13 | 63.5 | 42.88 | 6.35 | 8.74 | 0.8 | 1.27 | 1.11 | 1.11 | 1.14 | 1.20 | 1.10 |
| 25 | 1 | R16 | 70.0 | 50.80 | 6.35 | 8.74 | 0.8 | 1.64 | 1.39 | 1.43 | 1.43 | 1.49 | 1.35 |
| 32 | 1-1/4 | R18 | 79.5 | 60.32 | 6.35 | 8.74 | 0.8 | 2.07 | 1.70 | 1.83 | 1.75 | 1.81 | 1.69 |
| 40 | 1-1/2 | R20 | 90.5 | 68.28 | 6.35 | 8.74 | 0.8 | 2.94 | 2.51 | 2.69 | 2.58 | 2.66 | 2.54 |
| 50 | 2 | R23 | 108 | 82.55 | 7.92 | 11.91 | 0.8 | 3.45 | 2.91 | 3.22 | 2.97 | 3.02 | 2.92 |
| 65 | 2-/21 | R26 | 127 | 101.60 | 7.92 | 11.91 | 0.8 | 5.10 | 4.22 | 4.86 | 4.41 | 4.37 | 4.24 |
| 80 | 3 | R31 | 147 | 123.82 | 7.92 | 11.91 | 0.8 | 6.25 | 5.88 | 6.83 | 6.15 | 6.04 | 5.94 |
| 90 | 3-1/2 | R34 | 159 | 131.78 | 7.92 | 11.91 | 0.8 | 8.78 | 7.44 | 8.85 | | 7.64 | 7.90 |
| 100 | 4 | R37 | 175 | 149.22 | 7.92 | 11.91 | 0.8 | 11.4 | 9.73 | 11.8 | | 9.98 | 9.71 |
| 125 | 5 | R41 | 210 | 180.98 | 7.92 | 11.91 | 0.8 | 15.4 | 12.5 | 15.8 | | 12.7 | 12.4 |
| 150 | 6 | R45 | 242 | 211.12 | 7.92 | 11.91 | 0.8 | 19.8 | 16.2 | 21.3 | | 16.5 | 16.2 |
| 200 | 8 | R49 | 302 | 269.88 | 7.92 | 11.91 | 0.8 | 30.5 | 24.8 | 34.6 | | 25.2 | 24.8 |
| 250 | 10 | R53 | 356 | 323.85 | 7.92 | 11.91 | 0.8 | 44.1 | 35.5 | 54 | | 40.2 | 35.9 |
| 300 | 12 | R57 | 413 | 381.00 | 7.92 | 11.91 | 0.8 | 64 | 51 | 79 | | 58 | 51.5 |
| 350 | 14 | R61 | 458 | 419.90 | 7.92 | 11.91 | 0.8 | 88 | 70 | 106 | | 86.2 | 70.1 |
| 400 | 16 | R65 | 508 | 469.90 | 7.92 | 11.91 | 0.8 | 113 | 90 | 139 | | 113.4 | 90.4 |
| 450 | 18 | R69 | 575 | 533.40 | 7.92 | 11.91 | 0.8 | 138 | 109 | 175 | | 133.8 | 109.0 |
| 500 | 20 | R73 | 635 | 584.20 | 9.52 | 13.49 | 1.5 | 169 | 135 | 221 | | 167.8 | 136.0 |
| 600 | 24 | R77 | 750 | 692.15 | 11.13 | 16.66 | 1.5 | 249 | 204 | 341 | | 249.5 | 204.0 |
ASME B16.5 Tongue & Groove Flange Dimensions (mm)
| DN | d1 | d2 | d3 | d4 | d5 | d6 | d7 | d8 | f1 | f2 |
| ½” | 35.1 | 36.6 | 35.1 | 36.6 | 25.4 | 23.9 | 46.0 | 44.5 | 6.4 | 4.8 |
| ¾” | 42.9 | 44.5 | 42.9 | 44.5 | 33.3 | 31.8 | 53.8 | 52.3 | 6.4 | 4.8 |
| 1” | 50.8 | 52.3 | 47.7 | 49.3 | 38.1 | 36.6 | 62.0 | 57.2 | 6.4 | 4.8 |
| 1¼” | 63.5 | 65.0 | 57.2 | 58.7 | 47.8 | 46.0 | 74.7 | 66.6 | 6.4 | 4.8 |
| 1½” | 73.2 | 74.7 | 63.5 | 65.0 | 53.8 | 52.3 | 84.1 | 73.2 | 6.4 | 4.8 |
| 2” | 92.0 | 93.7 | 82.6 | 84.1 | 73.0 | 71.4 | 103.1 | 92.0 | 6.4 | 4.8 |
| 2½” | 104.6 | 106.4 | 95.2 | 96.8 | 85.8 | 84.1 | 115.8 | 104.6 | 6.4 | 4.8 |
| 3” | 127.0 | 128.5 | 117.5 | 119.1 | 108.0 | 106.4 | 138.2 | 127.0 | 6.4 | 4.8 |
| 4” | 157.2 | 158.8 | 144.5 | 146.1 | 131.8 | 130.0 | 168.1 | 157.2 | 6.4 | 4.8 |
| 5” | 185.7 | 187.5 | 173.0 | 174.8 | 160.3 | 148.8 | 196.9 | 185.7 | 6.4 | 4.8 |
| 6” | 215.9 | 217.5 | 203.2 | 204.7 | 190.5 | 189.0 | 227.0 | 215.9 | 6.4 | 4.8 |
| 8” | 269.8 | 271.5 | 254.0 | 255.5 | 238.3 | 236.5 | 281.0 | 269.8 | 6.4 | 4.8 |
| 10” | 323.5 | 325.4 | 304.8 | 306.3 | 285.8 | 284.2 | 335.0 | 323.5 | 6.4 | 4.8 |
| 12” | 381.0 | 328.5 | 362.0 | 363.5 | 342.9 | 341.4 | 392.2 | 381.0 | 6.4 | 4.8 |
| 14” | 412.8 | 414.3 | 393.7 | 395.2 | 374.7 | 373.1 | 423.9 | 412.8 | 6.4 | 4.8 |
| 16” | 469.9 | 471.5 | 447.6 | 449.3 | 425.5 | 423.9 | 481.0 | 469.9 | 6.4 | 4.8 |
| 18” | 533.4 | 535.0 | 511.0 | 512.8 | 489.0 | 487.4 | 544.6 | 533.4 | 6.4 | 4.8 |
| 20” | 584.2 | 585.8 | 448.8 | 560.3 | 533.4 | 531.9 | 595.4 | 584.2 | 6.4 | 4.8 |
| 24” | 692.2 | 693.7 | 666.8 | 668.3 | 641.4 | 639.8 | 703.3 | 692.2 | 6.4 | 4.8 |
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WN ST ASTM A105 Flange , CL300 SCH40 Small Tongue Weld Neck Flange 20" Images
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