Q/BQB 494-2023 (Q/BQB 494-2021) PDF EnglishUS$115.00 · In stock · Download in 9 seconds
Q/BQB 494-2021: Cold-rolled steel strip for welded pipe use Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Q/BQB 494: Historical versions
Similar standardsQ/BQB 494-2021: Cold-rolled steel strip for welded pipe use---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/QBQB494-2021BQB ENTERPRISE STANDARD OF BAOSHAN IRON AND STEEL CO., LTD Replacing Q/BQB 494-2018 Cold-Rolled Steel Strip for Welded Pipe Use Issued on: JUNE 04, 2021 Implemented on: AUGUST 10, 2021 Issued by. Baoshan Iron and Steel Co., Ltd. Table of ContentsForeword... 3 1 Chemical composition... 4 2 Mechanical properties... 4 3 Inspection and test... 4ForewordThis Document was drafted as per the rules specified in GB/T 1.1-2020 Directives for Standardization – Part 1.Rules for the Structure and Drafting of Standardizing Documents. This Document Replaced Q/BQB 494-2018 Cold-Rolled Steel Strip for Welded Pipe Use. Compared with Q/BQB 494-2018, this Document has the major technical changes as follows. --- Cancel the provisions of N component of BHG1-A designation; --- Adjust the lower limit of C component of BHG2 from 0.02 to 0.015; --- Adjust the lower limit of Alt of BHG2 from 0.020 to 0.015; --- Adjust the upper limit of the yield strength of BHG2 from 260MPa to 280MPa; --- Adjust the upper limit of roughness of BHG2 from 1.0μm to 1.3μm; --- Make editorial modification. Please note some contents of this Document may involve patents. The issuing agency of this Document does not assume the responsibility to identify these patents. This Document was proposed by Manufacturing and Management Department of the Baoshan Iron and Steel Co., Ltd. This Document shall be under the jurisdiction of Manufacturing and Management Department of the Baoshan Iron and Steel Co., Ltd. Drafting organization of this Document. Manufacturing and Management Department of the Baoshan Iron and Steel Co., Ltd. Chief drafting staffs of this Document. Yuan Min. The historical editions replaced by this Document are as follows. Q/BQB 494-2009, Q/BQB 494-2014, Q/BQB 494-2018. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. |
