Q/BQB 351-2023 English PDF

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Q/BQB 351-2023: Continuously hot-rolled steel sheet and strip for heat resisting structure

Q/BQB 351: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
Q/BQB 351-2023	349	Add to Cart	3 days	Continuously hot-rolled steel sheet and strip for heat resisting structure
Q/BQB 351-2018	80	Add to Cart	Auto, < 3 mins	Continuously-hot-rolled steel sheets and strips for heat resistant structures

Similar standards

Q/BQB 360   NMPA RULES66   Q/BQB 351   

Basic data

Standard ID: Q/BQB 351-2023 (Q/BQB351-2023)
Description (Translated English): Continuously hot-rolled steel sheet and strip for heat resisting structure
Sector / Industry: Chinese Industry Standard
Classification of Chinese Standard: QBQ
Word Count Estimation: 10,155
Date of Issue: 2023-04-09
Date of Implementation: 2023-07-01
Issuing agency(ies): Baoshan Iron & Steel Co., Ltd.

Q/BQB 351-2018: Continuously-hot-rolled steel sheets and strips for heat resistant structures

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
(Hot-rolled steel sheet and strip for heat-resistant structure) Baoshan Iron and Steel Co., Ltd. Enterprise Standard Hot-rolled steel sheet and strip for heat-resistant structure Published on.2018-02-07 Baoshan Iron and Steel Co., Ltd. released Self-commitment Relevant laws and regulations, mandatory standards and related industrial policies, and approved by the legal representative of the enterprise in accordance with the prescribed procedures. . The products produced by our company meet the technical requirements stipulated in this standard, and the standard number is clearly indicated on the corresponding product packaging. . Our company is responsible for the truthfulness, accuracy and legality of the public information of the statement, and bears all the laws for the consequences of the implementation of this standard. responsibility. Baoshan Iron and Steel Co., Ltd. 2018-02-07 Technical indicator 1 Indicator name. Main technical indicators such as composition and performance Indicator requirements. The main technical indicators and test methods such as composition and performance are shown in the attached file. (See page 4 for details) 1 Dimensions, shape, weight and tolerance The dimensions, shape, weight and tolerance of steel plates and strips shall be in accordance with Q/BQB 301. If you want to have higher thickness accuracy When required, the advanced precision PT.C given in Table 4 of Q/BQB 301 can be selected when ordering.

2 Technical requirements

Table 2 Brand Chemical composition (mass fraction) % C Si Mn PS Cr Mo V 12Cr1MoV 0.08～0.15 0.15～0.40 0.40～0.70 ≤0.030 ≤0.030 0.90～1.20 0.25～0.35 0.15～0.30 15CrMo 0.12～0.18 0.15～0.40 0.40～0.70 ≤0.030 ≤0.030 0.80～1.20 0.45～0.60 - table 3 Brand Tensile test a 180° bending test a, c D-bend head diameter A-sample thickness V-type impact test a Lower yield strength b ReL/ MPa tensile strength Rm/ MPa Elongation after break A/% Test temperature Shock absorption energy KV2, J 12Cr1MoV ≥ 245 ≥ 440 ≥ 19 D = 2a ≥34 15CrMo ≥295 450～590 ≥19 D=2a ≥34 a The direction of the specimen for tensile, bending and impact tests is transverse. b When the yielding phenomenon is not obvious, use Rp0.2. c The width of the curved specimen is b≥20mm, and b=20mm during the arbitration test.

3 Inspection and testing

Table 4 No. Test item number of samples, one sampling method test method 1 Chemical analysis a 1 (per furnace) GB/T.20066 GB/T 223, GB/T 4336, GB/T.20123, GB/T 20125 or general method 2 Tensile test 1/batch GB/T 2975 GB/T 228.1 3 bending test 1/batch GB/T 2975 GB/T 232 4 Impact test 1 group (3) GB/T 2975 GB/T 229 a When conducting an arbitration test on chemical composition, press GB/T 223. 00 65.5 SL  Indicator requirements document for Technical Indicator 1 ......

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