Oil Tank

Steam header

Main diameter D is over 2D of maximum outlet .
When main diameter D exceeds the bore of 300A, it needs to take welding, structure and installation tests as it is subject to pressure container test criteria. (Excluded if the bore is below 300A)

Central distance between sides

Application Modification 20 25 32 40 50 65 80 90 100 125 150 200 vapor header over vapor pressure of 1kg/㎠ 20 180                       25 190 200                     32 20 210 230                   40 200 210 230 230                 50 210 220 230 230 240               65 240 250 260 260 270 300             80 260 270 280 280 290 320 330           90 260 280 290 290 300 320 340 350         100 280 280 300 300 310 340 360 370 380       125 300 310 320 320 330 360 380 390 400 420     150 330 330 340 340 350 380 400 410 420 440 460   200 370 380 390 390 400 430 440 450 470 490 510 550