GB 713 Q370R pressure vessel and boiler steel sheets

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GB 713 Q370R pressure vessel and boiler steel sheets

GB 713 Q370R pressure vessel and boiler steel sheets

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Description:GB 713 Q370R pressure vessel steel plates and boiler steel sheets are mainly used to make pressure parts of boilers and pressure vessels at medium and normal te...

Production Capacity:6000ton//Month

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Products Description

GB 713 Q370R pressure vessel steel plates">pressure vessel steel plates and boiler steel sheets are mainly used to make pressure parts of boilers and pressure vessels at medium and normal temperature. Generally, the max. carbon content of Q370R pressure vessel steel plates is 0.18%. When the Q370R pressure vessel steel plates thickness beyond 60mm, the upper limit of carbon content can be increased to 0.20%. The the lower limit of carbon content may not be required upon agreement between the supplier and customer.

GB 713 Q370R pressure vessel steel plates and boiler steel sheets chemical composition ( max, %):

Grade C Si Mn Cu Ni Cr% Mo Nb V Ti Alt P S Other
Q370R 0.18 0.55 1.2-.1.7 0.30 0.30 0.30 0.08 0.015-0.05 0.05 0.03 - 0.02 0.01 Cu+Cr+Ni+Mo≤0.70

GB 713 Q370R pressure vessel steel plates and boiler steel sheets mechanical property:

Grade Thickness, in mm Tensile Strength Yield Strength, min Elongation, %, min
Q370R 10<T≤16 530-630 370 20
16<T≤36 530-630 360
36<T≤60 520-620 340
60<T≤100 510-610 330

GB 713 Q370R pressure vessel steel plates and boiler steel sheets thickness range is 10-100mm. Q370R steel plates are usually normalized, and they need -20℃ impact test with impact energy no less than 47J. The carbon equivalent of Q370R pressure vessel steel plates can be specified, and the value shall be negotiated by the supplier and buyer.

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