Pipes of metal for transportation of liquids and gas, drilling pipes of metal and their metal fittings, valves of metal not being parts of machines, couplings of metal for pipes, elbows of metal for pipes, clips of metal for pipes, connectors of metal for pipes; all of the foregoing for exclusive use in fire protection, fire sprinkler and fire suppression systems and certified and made in compliance with the highest relevant standards for such use; Steel pipes for exclusive use in fire protection, fire sprinkler and fire suppression systems and certified and made in compliance with the highest relevant standards for such use

'certifi':63,91 'clip':36 'complianc':67,95 'connector':41 'coupl':26 'drill':10 'elbow':31 'exclus':51,79 'fire':54,56,59,82,84,87 'fit':17 'forego':49 'gas':9 'highest':70,98 'liquid':7 'machin':25 'made':65,93 'metal':3,13,16,20,28,33,38,43 'part':23 'pipe':1,11,30,35,40,45,77 'protect':55,83 'relev':71,99 'sprinkler':57,85 'standard':72,100 'steel':76 'suppress':60,88 'system':61,89 'transport':5 'use':52,75,80,103 'valv':18

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