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Flanges: 20 Bar Solid Weld-Neck |
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Solid weld-neck flange forged from OSNA®-10.
Class 150 for 20 bar rated systems at 38°C to
EEMUA Publication No. 145: Section 3.
Up to 610 mm based on BS1560 (ANSI B16.5), Class 150.
Above 610 mm based on MSS SP-44, Class 150.
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Size |
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Outside Diameter of Flange mm D |
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Thickness of Flange mm b |
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Diameter of Hub mm d6 |
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Hub Dia at Weld Chamfer mm d3 |
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Length Through Hub mm h1 |
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Bore of Flange mm d7 |
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Thickness of Hub at Welding End mm S1 min |
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Parallel Length on Hub mm h2 |
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Drilling |
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Approx. Weight kg |
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in |
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mm |
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Diameter of Bolt Circle mm K |
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No. of bolts |
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Diameter
of bolt holes mm d2 |
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1/2 |
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16.00 |
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89.00 |
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14.00 |
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23.00 |
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16.00 |
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48.00 |
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12.00 |
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2.00 |
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8.00 |
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60.30 |
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4 |
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15.90 |
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0.72 |
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3/4 |
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25.00 |
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98.00 |
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16.00 |
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32.00 |
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25.00 |
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52.00 |
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21.00 |
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2.00 |
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7.00 |
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69.80 |
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4 |
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15.90 |
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1.04 |
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1 |
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30.00 |
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108.00 |
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16.00 |
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42.00 |
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30.00 |
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56.00 |
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25.00 |
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2.50 |
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8.00 |
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79.40 |
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4 |
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15.90 |
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1.30 |
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11/4 |
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38.00 |
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117.00 |
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17.00 |
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51.00 |
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38.00 |
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57.00 |
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33.03 |
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2.50 |
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8.00 |
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88.90 |
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4 |
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15.90 |
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1.70 |
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11/2 |
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44.50 |
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127.00 |
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20.00 |
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61.00 |
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44.50 |
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62.00 |
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39.53 |
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2.50 |
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7.00 |
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98.40 |
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4 |
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15.90 |
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2.30 |
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2 |
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57.00 |
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152.00 |
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25.00 |
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73.00 |
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57.00 |
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64.00 |
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52.16 |
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2.50 |
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9.00 |
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120.60 |
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4 |
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19.00 |
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4.10 |
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21/2 |
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76.10 |
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178.00 |
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27.00 |
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91.00 |
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76.10 |
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70.00 |
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71.23 |
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2.50 |
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8.00 |
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139.70 |
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4 |
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19.00 |
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6.10 |
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3 |
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88.90 |
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190.00 |
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27.00 |
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105.00 |
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88.90 |
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70.00 |
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84.08 |
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2.50 |
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8.00 |
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152.40 |
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4 |
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19.00 |
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7.10 |
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4 |
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108.00 |
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229.00 |
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27.00 |
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135.00 |
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108.00 |
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76.00 |
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102.13 |
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3.00 |
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8.00 |
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190.50 |
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8 |
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19.00 |
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10.20 |
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6 |
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159.00 |
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279.00 |
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27.00 |
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192.00 |
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159.00 |
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89.00 |
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152.38 |
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3.50 |
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8.00 |
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241.30 |
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8 |
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22.20 |
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15.80 |
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8 |
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219.10 |
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343.00 |
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31.00 |
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246.00 |
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219.10 |
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98.00 |
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210.10 |
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4.50 |
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8.00 |
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298.40 |
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8 |
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22.20 |
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28.00 |
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10 |
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267.00 |
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406.00 |
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31.00 |
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305.00 |
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267.00 |
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98.00 |
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255.93 |
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5.50 |
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8.00 |
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362.00 |
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12 |
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25.40 |
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39.30 |
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12 |
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323.90 |
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483.00 |
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35.00 |
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365.00 |
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323.90 |
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98.00 |
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309.74 |
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7.00 |
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8.00 |
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431.80 |
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12 |
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25.40 |
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62.90 |
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14 |
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368.00 |
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533.00 |
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41.00 |
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400.00 |
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368.00 |
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99.00 |
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351.00 |
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8.00 |
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8.00 |
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476.20 |
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12 |
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28.60 |
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88.40 |
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16 |
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419.00 |
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597.00 |
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43.00 |
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457.00 |
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419.00 |
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106.00 |
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399.84 |
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9.00 |
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8.00 |
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539.80 |
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16 |
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28.60 |
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115.60 |
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18 |
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457.20 |
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635.00 |
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45.00 |
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505.00 |
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457.20 |
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113.00 |
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438.50 |
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9.50 |
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8.00 |
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577.80 |
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16 |
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31.80 |
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140.70 |
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20 |
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508.00 |
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698.00 |
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45.00 |
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559.00 |
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508.00 |
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118.00 |
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486.50 |
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11.00 |
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8.00 |
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635.00 |
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20 |
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31.80 |
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168.40 |
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24 |
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610.00 |
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813.00 |
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49.00 |
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664.00 |
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610.00 |
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137.00 |
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584.50 |
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13.00 |
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8.00 |
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749.30 |
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20 |
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34.90 |
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253.70 |
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28 |
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711.00 |
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927.00 |
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72.00 |
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748.00 |
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711.00 |
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145.00 |
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681.40 |
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15.00 |
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8.00 |
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864.00 |
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28 |
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34.90 |
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461.10 |
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32 |
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813.00 |
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1060.00 |
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72.00 |
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876.00 |
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813.00 |
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160.00 |
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779.50 |
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17.00 |
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8.00 |
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978.00 |
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28 |
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41.10 |
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611.10 |
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36 |
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914.00 |
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1168.00 |
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72.00 |
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984.00 |
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914.00 |
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175.00 |
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876.50 |
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19.00 |
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8.00 |
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1086.00 |
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32 |
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41.10 |
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755.70 |
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| It should be noted that although these flanges are flat faced, inside bolt circle gaskets shall be used and special care should be taken to avoid overtightening the bolting.
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