164 Piping Support Intervals 　Changes by pipe wall-surface temperature, size and fluid specific gravity. Support intervals by temperature are shown in the following table. PN10/SDR11 Size (mm) Product Display Temperature (｢ｪC) 20｢ｪC 30｢ｪC 40｢ｪC 50｢ｪC 60｢ｪC 70｢ｪC 80｢ｪC 90｢ｪC 15 d20 530 510 500 480 460 450 430 410 20 d25 590 570 550 530 510 500 480 460 25 d32 660 640 620 600 570 560 540 520 32 d40 750 720 700 670 650 630 610 580 40 d50 830 810 780 750 720 700 680 650 50 d63 930 900 870 840 810 790 760 730 65 d75 1,020 980 950 920 880 860 830 800 80 d90 1,120 1,080 1,040 1,000 960 940 910 870 100 d110 1,230 1,190 1,150 1,110 1,070 1,040 1,010 960 125 d140 1,390 1,340 1,300 1,250 1,200 1,170 1,140 1,090 150 d180 1,580 1,520 1,470 1,420 1,370 1,330 1,290 1,230 200 d225 1,760 1,700 1,650 1,590 1,530 1,490 1,440 1,380 *) Calculated by setting water (specific gravity=1) as fluid and deflection at 5 mm. Figures above are support intervals for straight pipe. Consideration is required when adding flanges, valves, etc. If the fluid specific gravity is different, the support intervals need to be shortened by multiplying with a value in the table below. Specific Gravity 1.00 1.25 1.50 1.75 Lowering Coefficient 1.00 0.96 0.93 0.90 ■ In the case of fluid being liquid PN4/SDR26 Size (mm) Product Display Temperature (｢ｪC) 20｢ｪC 30｢ｪC 40｢ｪC 50｢ｪC 60｢ｪC 70｢ｪC 80｢ｪC 90｢ｪC 125 d140 1,160 1,120 1,090 1,050 1,010 980 950 910 150 d180 1,320 1,280 1,230 1,190 1,140 1,110 1,080 1,030 200 d225 1,470 1,430 1,380 1,330 1,280 1,240 1,210 1,150 Unit: mm Unit: mm PN10/SDR11 Size (mm) Product Display Temperature (｢ｪC) 20｢ｪC 30｢ｪC 40｢ｪC 50｢ｪC 60｢ｪC 70｢ｪC 80｢ｪC 90｢ｪC 15 d20 700 680 660 630 610 590 580 550 20 d25 790 760 740 710 680 660 640 620 25 d32 890 860 830 800 770 750 730 700 32 d40 1,000 960 930 900 860 840 810 780 40 d50 1,110 1,080 1,040 1,000 960 940 910 870 50 d63 1,250 1,210 1,170 1,120 1,080 1,050 1,020 980 65 d75 1,360 1,320 1,270 1,230 1,180 1,150 1,120 1,070 80 d90 1,490 1,440 1,400 1,340 1,290 1,260 1,220 1,170 100 d110 1,650 1,600 1,540 1,490 1,430 1,390 1,350 1,290 125 d140 1,860 1,800 1,740 1,680 1,610 1,570 1,520 1,460 150 d180 2,110 2,040 1,970 1,900 1,830 1,780 1,730 1,650 200 d225 2,360 2,280 2,210 2,130 2,040 1,990 1,930 1,850 ■ In the case of duct pipe PN4/SDR26 Size (mm) Product Display Temperature (｢ｪC) 20｢ｪC 30｢ｪC 40｢ｪC 50｢ｪC 60｢ｪC 70｢ｪC 80｢ｪC 90｢ｪC 125 d140 1,910 1,850 1,790 1,720 1,650 1,610 1,560 1,490 150 d180 2,170 2,090 2,020 1,950 1,870 1,830 1,770 1,690 200 d225 2,420 2,340 2,260 2,180 2,100 2,050 1,980 1,890 Unit: mm Unit: mm *) Calculated by setting water (specific gravity=1) as fluid and deflection at 5 mm. Technical Document