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Boiler pipe standard

PIC-(Boiler pipe standard)
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Boiler pipe standard GB5310

Trade Mark Steel tube type C Si Mn P S Cr
Max  
10 Middle and low pressure boiler pipe 0.07-0.13 0.17-0.37 0.35-0.65 0.035 0.035 0.15
20 0.17-0.23 0.17-0.37 0.35-0.65 0.035 0.035 0.25
20G High pressure boiler pipe 0.17-0.23 0.17-0.37 0.35-0.65 0.025 0.015 -