Q/BQB 611-2023 English PDF

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Q/BQB 611-2023: Steel plates for welded structure

Q/BQB 611: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
Q/BQB 611-2023	349	Add to Cart	3 days	Steel plates for welded structure
Q/BQB 611-2018	115	Add to Cart	Auto, < 3 mins	Steel Plates for Welded Structure

Similar standards

NMPA RULES66   Q/BQB 612   Q/BQB 610   

Basic data

Standard ID: Q/BQB 611-2023 (Q/BQB611-2023)
Description (Translated English): Steel plates for welded structure
Sector / Industry: Chinese Industry Standard
Classification of Chinese Standard: QBQ
Word Count Estimation: 10,115
Date of Issue: 2023-04-09
Date of Implementation: 2023-07-01
Issuing agency(ies): Baoshan Iron & Steel Co., Ltd.

Q/BQB 611-2018: Steel Plates for Welded Structure

---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.
(Thick steel plate for welded structure) Baoshan Iron and Steel Co., Ltd. Enterprise Standard Thick steel plate for welded structure Published on.2018-01-30 Baoshan Iron and Steel Co., Ltd. released Self-commitment Regulations, mandatory standards and related industrial policies, and approved by the corporate legal representative in accordance with the prescribed procedures . I The products produced by the company meet the technical requirements stipulated in this standard, and the standard number is clearly indicated on the corresponding product packaging. Our company It is responsible for the truthfulness, accuracy and legality of the public information, and assumes full legal responsibility for the consequences of the implementation of this standard. Baoshan Iron and Steel Co., Ltd. 2018-01-30 Technical indicator 1 Index name. Main technical indicators such as composition and mechanical properties Indicator requirements. Main indicators such as composition and mechanical properties and test methods are attached (See page 4 for details)

1 General technical requirements

Unless otherwise specified in this standard, steel plates supplied in accordance with this standard shall comply with the corresponding requirements of the Q/BQB 600 standard.

2 Technical requirements

Table 2 Brand nominal thickness mm Chemical composition (melting analysis) % C Si Mn PS other SM400A 5~50 ≤0.23 - ≥2.5×Ca ≤0.025 ≤0.020 Other alloying elements can be added as needed >50～150 ≤0.25 SM400B 5~50 ≤0.20 ≤0.35 0.60～1.50 >50～150 ≤0.22 SM400C 5~100 ≤0.18 ≤0.35 0.60~1.50 >100～150 Negotiation between supply and demand sides SM490A 5~50 ≤0.20 ≤0.55 ≤1.65 >50～150 ≤0.22 SM490B 5~50 ≤0.18 ≤0.55 ≤1.65 >50～150 ≤0.20 SM490C 5~100 ≤0.18 ≤0.55 ≤1.65 >100～150 Negotiation between supply and demand sides SM490YA SM490YB 5~100 ≤0.20 ≤0.55 ≤1.65 >100～150 Negotiation between supply and demand sides SM520B SM520C 5~100 ≤0.20 ≤0.55 ≤1.65 >100～150 Negotiation between supply and demand sides SM570 5~100 ≤0.18 ≤0.55 ≤1.70 >100～150 Negotiation between supply and demand sides a The value of carbon is the amount used in the actual smelting analysis. Indicator requirements document for Technical Indicator 1

3 Inspection and testing

Table 8 No. Test item number of samples, one sampling method b 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 GB/T 2975 GB/T 228.1 3 Impact test 1 group (3) GB/T 2975 Thickness ≤ 28mm, Figure A11 a) (near surface) Thickness > 28mm, Figure A11 b) (1/4t) GB/T 229 a When arbitrating, the test method adopts GB/T 223. b For L0=50, d=14 tensile specimen, the blank position is according to GB/T 2975. thickness < 50, Fig. A10 c); thickness ≥50mm, Fig. A10 d). b When it is not possible to sample at the specified sampling position, it should be as close as possible to that position. ......

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