Unit: mm inch
0.375 0.5 0.75 1 1.25 1.5 2 2.5 3 4 5 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 40 42 44 46 48 52 54 56 60
Unit: Class
150 300 400 600 800 900 1500 2500
Coal Tar
Gas
Oil
Sewage
Steam
Water
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