GB713 boiler quality Q370R pressure vessel steel plate supplier

Pressure vessel steel plate covers a range of steel grades that are designed for use in pressure vessel, boilers, heat exchangers and any other vessel that contains a gas or liquid at high pressures.

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Boiler Steel Plate is used for many applications where the pressure inside is significantly higher than atmospheric pressure.More..

GB713 boiler quality Q370R pressure vessel steel plate supplier

GB713 boiler quality Q370R pressure vessel steel plate supplier

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Q370R pressure vessel steel plate is specified by GB713 standard, and is applicable for pressure parts of boilers and pressure vessels at medium and normal temperature. The thickness range of Q370R steel plate is 10-100mm. The delivery state of Q370R pressure vessel steel plate is normalizing. Q370R plate shall do -20℃ impact test with impact energy no less than 47J.

GB713 boiler quality Q370R pressure vessel steel platechemical 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

Notes: 1) After the agreement between Q370R plate supplier and the demander, the lower limit of C content may not be required.

  1. For Q370R steel plate with thickness greater than 60 mm, the upper limit of carbon content can be increased to 0.20%.
  2. According to the requirements of the demander, the carbon equivalent of Q370R pressure vessel steel plate can be specified, and the value shall be determined by both parties.

GB713 boiler quality Q370R pressure vessel steel plate 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

The size, shape and allowable tolerance of Q370R pressure vessel steel plate should meet the requirements of standard GBT709. The allowable tolerance of Q370R plate thickness shall be in accordance with GBT709 class B. According to the requirements of the demander, Q370R pressure vessel steel plate can be supplied with GBT709 Class C tolerance. Q370R steel plate with more strict thickness tolerance can be supplied if reached agreement between the supplier and the demander.

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