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Q/BQB 203-2023 English PDF

US$529.00 · In stock
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Q/BQB 203-2023: Seamless tube for structures of pipelines, vessels and equipment

Q/BQB 203: Evolution and historical versions

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
Q/BQB 203-2023	English	529	Add to Cart	4 days [Need to translate]	Seamless tube for structures of pipelines, vessels and equipment		Q/BQB 203-2023
Q/BQB 203-2018	English	105	Add to Cart	0--9 seconds. Auto-delivery	Seamless steel pipe for pipeline, vessel and equipment structure		Q/BQB 203-2018
Q/BQB 203-2009	English	270	Add to Cart	0--9 seconds. Auto-delivery	Seamless steel tubes for pipes, containers and equipment structure	Obsolete	Q/BQB 203-2009

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Basic data

Standard ID	Q/BQB 203-2023 (Q/BQB203-2023)
Description (Translated English)	Seamless tube for structures of pipelines, vessels and equipment
Sector / Industry	Chinese Industry Standard
Classification of Chinese Standard	QBQ
Word Count Estimation	15,141
Date of Issue	2023-04-09
Date of Implementation	2023-07-01
Issuing agency(ies)	Baoshan Iron & Steel Co., Ltd.

Q/BQB 203-2018: Seamless steel pipe for pipeline, vessel and equipment 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.
(Seamless steel pipe for pipes, containers and equipment structures) Baoshan Iron and Steel Co., Ltd. Enterprise Standard Seamless steel pipe for pipelines, containers and equipment structures Published on.2018-01-31 Baoshan Iron and Steel Co., Ltd. released Self-commitment The relevant national laws and regulations, mandatory standards and related industrial policies, and approved by the legal representative of the enterprise in accordance with the prescribed procedures. release . The products produced by our company meet the technical requirements stipulated in this standard, and the standard number is on the corresponding product packaging. Express. Our company is responsible for the truthfulness, accuracy and legality of the public information of the statement, and bears all the consequences of the implementation of this standard. legal liability. Baoshan Iron and Steel Co., Ltd. 2018-01-31 Technical indicator 1 Indicator name. Main 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) Chemical composition (melting analysis) Chemical composition (mass fraction) /% C Si Mn PS Cr Mo Ni Alt d Cu N Nb Ti V St37.0 ≤0.17 0.17~ 0.37 0.35～0.65 ≤0.025 ≤0.020≤0.25 - ≤0.25 - ≤0.20 - - - - St44.0 ≤0.21 0.17~ 0.37 0.50～0.80 ≤0.025 ≤0.020≤0.25 - ≤0.25 - ≤0.20 - - - - St52.0 ≤0.22 ≤0.55 ≤1.60 ≤0.025 ≤0.020≤0.25 - ≤0.25 - ≤0.20 - - - - CK45 0.42~ 0.50 0.17~ 0.37 0.50～0.80 ≤0.025 ≤0.020≤0.25 - ≤0.25 - ≤0.20 - - - - E235 a ≤0.17 ≤0.35 ≤1.20 ≤0.025 ≤0.020 - - - - - - - - - E275 a ≤0.21 ≤0.35 ≤1.40 ≤0.025 ≤0.020 - - - - - - - - - E275K2a ≤0.20 ≤0.40 0.50～1.40 ≤0.025 ≤0.020≤0.30≤0.10≤0.30≥0.020≤0.35≤0.015≤0.05≤0.03≤0.05 E315 a ≤0.21 ≤0.30 ≤1.50 ≤0.025 ≤0.020 - - - - - - - - - E355 a,b ≤0.22 ≤0.55 ≤1.60 ≤0.025 ≤0.020 - - - - - - - - - E355K2a ≤0.20 ≤0.50 0.90～1.65 ≤0.025 ≤0.020≤0.30≤0.10≤0.50≥0.020≤0.35≤0.015≤0.05≤0.05≤0.12 C22E a,c 0.17~ 0.24 0.40 0.40~0.70 0.025 0.020 0.40 0.10 0.40 - - - - - - C35E a,c 0.32~ 0.39 0.40 0.50~0.80 0.025 0.020 0.40 0.10 0.40 - - - - - - C45E a,c 0.42~ 0.50 0.40 0.50~0.80 0.025 0.020 0.40 0.10 0.40 - - - - - - a By agreement between the supplier and the buyer, elements other than those specified in the table may be added. The supplier can add other elements to improve the castability. b The supplier may add Nb, V, Ti, but the content of these elements should be reported. c should satisfy Cr Mo Ni ≤ 0.63%. d This Alt requirement does not apply if there are sufficient other nitrogen fixation elements. Longitudinal tensile properties of steel pipes at room temperature Grade delivery status Tensile properties a, b Tensile strength Rm/MPa Lower yield strength ReL/MPa Elongation after break A/% Wall thickness/mm ≤16 >16 St37.0 Hot rolling or normalizing c 350～480 ≥235 ≥225 ≥25 St44.0 Hot rolling or normalizing c 420～550 ≥275 ≥265 ≥21 St52.0 hot rolling or normalizing c 500～650 ≥355 ≥345 ≥21 CK45 hot rolling or normalizing c 590～730 ≥335 ≥325 ≥14 a When the yielding phenomenon is not obvious, the lower yield strength is replaced by the specified plastic elongation strength Rp0.2. b Selected by the manufacturer, the specimen is a longitudinal curved specimen or a longitudinal circular cross-section specimen in GB/T 228.1. c Selected by the supplier, delivered in hot rolled or normalized condition. Indicator requirements document for Technical Indicator 1 Longitudinal mechanical properties of steel tubes at room temperature Grade delivery status Tensile properties a, b -20 ° C shock absorption energy KV2/J not less than tensile strength Rm/Mpa not less than Upper yield strength ReH/Mpa not less than Elongation after break A/% not less than Wall thickness/mm wall thickness/mm wall thickness/mm ≤16 >16 ≤16 >16 ≤16 >16 E235 hot rolled or normalized c 360 235 225 25 - E275 hot rolled or normalized c 410 275 265 22 - E275K2 Normalizing 410 275 265 22 40 E315 Hot rolled or normalized c 450 315 305 21 - E355 Hot rolled or normalized c 490 355 345 20 - E355K2 Normalizing 490 355 345 20 40 C22E Normalizing 430 410 240 210 24 25 - C35E Normalizing 550 520 300 270 18 19 - C45E Normalizing 620 580 340 305 14 16 - a When the yielding phenomenon is not obvious, the upper yield strength is replaced by the specified plastic elongation strength Rp0.2. b Selected by the manufacturer, the specimen is a longitudinal curved specimen or a longitudinal circular cross-section specimen in GB/T 228.1. c Selected by the supplier, delivered in hot rolled or normalized condition. Steel pipe testing method Serial number test item test method sampling method sampling quantity chemical composition (melting analysis) GB/T 223, GB/T 4336, GB/T.20123, GB/T.20125, GB/T.20126 GB/T.20066 one sample per furnace 2 Tensile test GB/T 228.1 GB/T 2975 One sample per batch 3 Impact test GB/T 229 GB/T 2975 Each batch is taken on a steel pipe Three samples

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Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version Q/BQB 203-2023 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.