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Q/BQB 311-2023 English PDF (QBQB311-2018, QBQB311-2014)

Q/BQB 311-2023_English: PDF (Q/BQB311-2023)
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Q/BQB 311-2023English315 Add to Cart 0--9 seconds. Auto-delivery Continuously hot-rolled high yield strength steel sheet and strip for cold forming Q/BQB 311-2023
Q/BQB 311-2018English120 Add to Cart 0--9 seconds. Auto-delivery Continuously hot-rolled high yield strength steel sheet and strip for cold forming Q/BQB 311-2018
Q/BQB 311-2014English140 Add to Cart 0--9 seconds. Auto-delivery Continuously hot-rolled high yield strength steel sheet and strip for cold forming Obsolete Q/BQB 311-2014


BASIC DATA
Standard ID Q/BQB 311-2023 (Q/BQB311-2023)
Description (Translated English) Continuously hot-rolled high yield strength steel sheet and strip for cold forming
Sector / Industry Chinese Industry Standard
Classification of Chinese Standard QBQ
Word Count Estimation 9,979
Date of Issue 2023-04-09
Date of Implementation 2023-07-01

BASIC DATA
Standard ID Q/BQB 311-2018 (Q/BQB311-2018)
Description (Translated English) Continuously hot-rolled high yield strength steel sheet and strip for cold forming
Sector / Industry Chinese Industry Standard
Classification of Chinese Standard QBQ
Word Count Estimation 5,533
Administrative Organization Baoshan Iron and Steel Co., Ltd.



Q/BQB 311-2023 BQB ENTERPRISE STANDARD OF BAOSTEEL CO., LTD. Replacing Q/BQB 311-2018 Continuously hot-rolled high yield strength steel sheet and strip for cold forming ISSUED ON: APRIL 9, 2023 IMPLEMENTED ON: JULY 1, 2023 Issued by: BaoSteel Co., Ltd. Table of Contents Foreword ... 3 1 Scope ... 4 2 Normative references ... 4 3 Terms and definitions ... 5 4 Categories and codes ... 5 5 Information required for ordering ... 6 6 Dimensions, shape, weight and tolerances ... 6 7 Technical requirements ... 7 8 Inspection and testing ... 9 9 Packaging, marking, and inspection documents ... 11 10 Rounding-off rules for numerical values ... 11 11 Appendix ... 11 Appendix A (informative) Comparison table of similar grades between this document and relevant standards ... 12 Continuously hot-rolled high yield strength steel sheet and strip for cold forming 1 Scope This document specifies the dimension, shape, technical requirements, inspection and testing, packaging, marking, and inspection documents for continuously hot-rolled high-yield strength steel sheets and strips for cold forming. This document applies to continuously hot-rolled high-yield strength steel strips for cold forming produced by Baoshan Iron and Steel Co., Ltd., as well as steel sheets cut transversely and steel strips slit longitudinally from it, hereafter referred to as steel sheets and steel strips. 2 Normative references The following documents contain the provisions which, through normative reference in this document, constitute the essential provisions of this document. For the dated referenced documents, only the versions with the indicated dates are applicable to this document; for the undated referenced documents, only the latest version (including all the amendments) is applicable to this document. GB/T 222-2006 Permissible tolerances for chemical composition of steel products GB/T 223 Methods for chemical analysis of iron, steel and alloy (applicable parts) GB/T 228.1-2021 Metallic materials - Tensile testing - Part 1: Method of test at room temperature GB/T 232 Metallic materials - Bend test GB/T 2975 Steel and steel products - Location and preparation of samples and test pieces for mechanical testing GB/T 4336 Carbon and low-alloy steel - Determination of multi-element contents - Spark discharge atomic emission spectrometric method (routine method) GB/T 8170 Rules of rounding off for numerical values & expression and judgment of limiting values GB/T 20066 Steel and iron - Sampling and preparation of samples for the 5 Information required for ordering 5.1 Users need to provide the following information when ordering: a) This document number; b) Product category; c) Grade, surface treatment method, and surface quality level; d) Specifications and precision of dimensions (thickness, width, unevenness); e) Edge state; f) Purpose; g) Type of inspection documents. 5.2 Matters omitted from the order contract 5.2.1 If the surface treatment method is not specified, the product will be delivered with the rolled surface. 5.2.2 For hot-rolled steel sheets and steel strips, if the dimensional precision is not specified, they will be delivered with the ordinary precision specified in Q/BQB 301; if the edge status is not specified, the steel strips will be delivered in an untrimmed state, and the steel sheets will be delivered in a trimmed state. 5.2.3 For hot-rolled pickled steel sheets and steel strips, if the dimensional precision is not specified, the thickness shall be high thickness precision and other dimensions shall be ordinary precision for delivery; if the edge condition, surface quality level, and whether it is oiled or not is not specified, they shall be delivered with trimmed edges, higher-grade and oiled surface; if the inner diameter of the steel coil is not specified, the inner diameter of the steel coil shall be 610 mm for delivery. 6 Dimensions, shape, weight and tolerances The dimensions, shape, weight, and tolerances for steel sheets and steel strips shall comply with the regulations of Q/BQB 301. If the buyer has higher requirements for thickness precision, the high precision PT.C given in Table 4 of Q/BQB 301 can be selected when ordering. 7 Technical requirements 7.1 Grade and chemical composition 7.1.1 The grade and chemical composition (smelting analysis) of steel shall comply with the requirements in Table 2. 7.1.2 The permissible tolerances of the chemical composition of finished steel sheets and steel strips shall comply with the provisions of GB/T 222. 7.2 Smelting method The steel used for steel sheets and steel strips is killed steel smelted in an oxygen converter. 7.3 Delivery status The steel sheets and steel strips are delivered in a hot-rolled or controlled-rolled state. 7.4 Surface treatment methods 7.4.1 The surface treatment methods of steel sheets and steel strips can be rolling and acid pickling. 7.4.2 When steel sheets and steel strips have hot-rolled pickled surfaces, they are usually supplied with oiling. The oil film shall be able to be removable with an aqueous alkali solution. Under normal packaging, transportation, loading and unloading, and storage conditions, the supplier shall ensure that the surface of the steel sheet and steel strip will not rust within 3 months from the date of manufacturing completion. After negotiation between the supplier and the buyer, and indication in the contract, the hot- rolled pickled surface products can also be supplied without oiling. NOTE: For non-oiled products required by the buyer, rust may occur; the surface may be slightly scratched during transportation, loading, unloading, storage, and use. ......


Q/BQB 311-2018 BQB ENTERPRISE STANDARD OF BAOSTEEL High yield strength hot rolled steel sheet and strip for cold forming Issued on. February 07, 2018 Issued by. Baoshan Iron and Steel Co., Ltd. Table of Contents Self-commitment ... 3  Technical indicator 1 ... 4  1 Dimensions, shape, weight and tolerance ... 5  2 Technical requirements ... 5  3 Inspection and testing ... 6    Self-commitment The contents of Q/BQB 311-2018 "High yield strength hot rolled steel sheet and strip for cold forming" prepared and published by our company are in compliance with relevant national laws and regulations, mandatory standards and relevant industrial policies. And it is approved by the corporate legal representative in accordance with the prescribed procedures. The products produced by our company meet the technical requirements stipulated in this Standard. The standard number is indicated on the corresponding product package. Our company is responsible for the truthfulness, accuracy and legality of the public information of the statement, and assumes full legal responsibility for the consequences of the implementation of this Standard. Baoshan Iron and Steel Co., Ltd. February 07, 2018 High yield strength hot rolled steel sheet and strip for cold forming 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 the purchaser needs higher requirements for thickness accuracy, the advanced precision PT.C given in Table 4 of Q/BQB 301 can be chosen when ordering. 2 Technical requirements ......


Q/BQB 311-2014 BQB Baoshan Iron and Steel Co., Ltd. Enterprise Standard Replacing Q/BQB 311-2009 Continuously hot-rolled high yield strength steel sheet and strip for cold forming ISSUED ON. MAY 05, 2014 IMPLEMENTED ON. SEPTEMBER 01, 2014 Issued by. Baoshan Iron and Steel Co., Ltd. Table of Contents Foreword ... 3  1 Scope ... 4  2 Normative references ... 4  3 Classification and codes ... 5  4 Ordering information ... 5  5 Dimensions, shapes, weight and allowable deviation ... 6  6 Technical requirements ... 6  7 Inspection and testing ... 8  8 Packaging, marks and inspection documents ... 10  9 Numerical rounding rule ... 10  10 Appendix ... 10  Annex A (informative) Comparison table between this Standard and related standards on similar designations ... 11  Foreword This Standard was drafted in accordance with the rules given in GB/T 1.1-2009 “Directives for standardization - Part 1. Structure and drafting of standards”. This Standard was formulated based on EN 10149-2.2013, SEW 092.95, SAE J1392.2008 and ISO 6930-1.2001 and the actual situation of Baoshan Iron and Steel. This Standard replaces Q/BQB 311-2009. Compared with Q/BQB 311-2009, the main changes are as follows. - updated the version of normative references; - modified Table A.1 of Annex A for a comparison table between this Standard and related standards on similar designations; - other editorial modifications. This Standard was proposed by Baoshan Iron and Steel Co., Ltd. Manufacturing Management Department. This Standard shall be under the jurisdiction of Baoshan Iron and Steel Co., Ltd. Manufacturing Management Department. Main drafting organization of this Standard. Baoshan Iron and Steel Co., Ltd. Manufacturing Management Department. Main drafter of this Standard. Han Yu. Versions of standard substituted by this Standard are. Q/BQB 311-2007, Q/BQB 311-2009. Continuously hot-rolled high yield strength steel sheet and strip for cold forming 1 Scope This Standard specifies the dimensions, shapes, technical requirements, inspection and testing, packaging, marks and inspection documents of continuously hot-rolled high yield strength steel sheet and strip for cold forming. This Standard is applicable to continuously hot-rolled high yield strength steel sheet and strip for cold forming manufactured by Baoshan Iron and Steel Co., Ltd., as well as transversely cut steel sheet and the longitudinally cut steel strip, hereinafter referred to as steel sheet and strip. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 222-2006, Permissible Tolerances for Chemical Composition of Steel Products GB/T 223, Steel and iron - Determination of hydrogen content GB/T 228.1-2010, Metallic materials - Tensile testing - Part 1. Method of test at room temperature GB/T 232-2010, Metallic materials - Bend test GB/T 2975-1998, Steel and Steel Products - Location and Preparation of Test Pieces for Mechanical Testing GB/T 4336-2002, Standard Test Method for Spark Discharge Atomic Emission Spectrometric Analysis of Carbon and Low-Alloy Steel (Routine Method) GB/T 8170-2008, Rules of rounding off for numerical values & expression and judgement of limiting values GB/T 20066-2006, Steel and Iron-Sampling and Preparation of Samples for c) designation, surface treatment method and surface quality level; d) specifications and size (thickness) accuracy; e) edge state; f) usage; g) inspection document type. 4.2 Omission in the order contract 4.2.1 When surface treatment is not specified, the product shall be delivered in rolled surface. 4.2.2 For hot-rolled steel sheets and strips, when dimensional accuracy is not stated, the product is delivered in the normal thickness accuracy of Q/BQB 301. When the edge state is not specified, the steel strip shall be delivered in a non- cut state, and the steel sheet is delivered in a trimmed state. 4.2.3 For hot-rolled pickled steel sheets and strips, the product shall be delivered in Q/BQB 301 with higher thickness accuracy. When the edge state and surface quality level are not stated, whether they are oiled, the product shall be delivered in trimming state, higher surface and oiling. When the inner diameter of steel coil is not stated, the product shall be delivered in steel coil inner diameter of 610mm. 5 Dimensions, shapes, weight and allowable deviation The dimensions, shapes, weight and allowable deviation of steel sheet and strip shall comply with Q/BQB 301. 6 Technical requirements 6.1 Designation and chemical composition 6.1.1 The designation and chemical composition of the steel (melting analysis) shall comply with the requirements of Table 2. 6.1.2 The allowable deviation of the chemical composition of the finished steel sheet and strip shall comply with GB/T 222. 6.2 Smelting method The steel used for steel sheet and strip is aluminum killed steel smelted by oxygen converter. the re-inspection results (including all indicators required by testing of this item) is unqualified, the re-inspection shall fail. 7.6.3 If the re-inspection fails, the single piece that has been tested and the test results are not acceptable cannot be accepted. However, a single piece of the batch that has not been tested may be resubmitted for testing and acceptance one by one. 8 Packaging, marks and inspection documents The packaging, marks and inspection documents of steel sheet and strip shall comply with Q/BQB 300. 9 Numerical rounding rule Numerical rounding rule shall comply with GB/T 8170. 10 Appendix See Annex A (informative appendix) for a comparison table between this Standard and related standards on similar designations. ......

Similar standards: Q/BQB 311-2018  Q/BQB 302-2023  Q/BQB 310-2023  
Similar PDFs (Auto-delivered in 9 seconds): Q/BQB 311-2023  Q/BQB 311-2018  Q/BQB 311-2014