Heat Exchanger Fin Tube,Stud Tube , 4" sch40 , cs of stud material Material C Si Mn P S Mo Cr % % % % max % max A 335 Grade P1 0,10 - 0,20 0,10 - 0,50 0,30 - 0,80 0,025 0,025 0,44-0,65 A 335 Grade P5 ...
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