Can Q235B be used in pressure vessels after the new regulatory requirements are implemented? !
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In the new draft version 150, the Q235 series is no longer listed among the main materials; it seems to be listed in the appendix instead! ! The sulfur and phosphorus content in current Q23B does not meet the specified requirements; in that case, can Q235B still be used as steel plate for pressure vessels? ? ? The sulfur and phosphorus content of Q235D seems to meet the specified limits; can it be used for steel plates in pressure vessels? ?
As long as the quality certificate for Q235-B meets the regulatory requirements, it can be used in pressure vessels; SW67.0 also uses Q235-B material
I think the question should be, \"If GB150.2 is implemented, can Q235B be used in pressure vessels governed by the Code for Pressure Vessels?\" I still say the same thing: \"Q235B can be used in pressure vessels that are not governed by the Code for Pressure Vessels.\"”
Reply 3# letitbe: It seems that according to the specifications, it’s the pressure vessel plate! ! For those with an R at the end, are the requirements the same for carbon structural steel plates like Q235?
The first one applies to all steels, while the subsequent ones apply to specialty steels.
Those not subject to compliance inspections can be used for low-pressure and atmospheric pressure applications
Reply to 4# wangjianwei86: They are different. The first category is intended for welding purposes, while the second category refers to steels specifically used for containers. Under the regulations governing fixed and storage containers, Q235B can only be used as the welding steel mentioned in the first category, that is, for components such as lugs and supports other than gussets
Reply to 6# Meisen Yongheng: It’s not low pressure; it should be extraclass and normal pressure
The new version of GB150 hasn’t been released yet, so Q235B should still be usable
According to standard GB3274, the allowable limits for P and S content in Q235B steel plates are ≤0.045%. However, the new regulations specify that for steel plates intended for use in pressure vessels, the P content should be ≤0.030% and the S content ≤0.020%. If the material certificate shows that the P and S contents in the Q235B steel plate are within these limits, then it can be used; when placing orders, it is possible to request the manufacturer to control these P and S contents.
2. 3. Is the range of 1 strip used for welding not including pressure-bearing components?