GB/T 34201-2017 PDF EnglishUS$145.00 · In stock · Download in 9 seconds
GB/T 34201-2017: Seamless hot-rolled square and rectangular steel tubes for structure Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid
Similar standardsGB/T 34201-2017: Seamless hot-rolled square and rectangular steel tubes for structure---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/GBT34201-2017GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 77.140.75 H 48 Seamless hot-rolled square and rectangular steel tubes for structure Issued on. SEPTEMBER 7, 2017 Implemented on. JUNE 1, 2018 Issued by. General Administration of Quality Supervision, Inspection and Quarantine of the People’s Republic of China; Standardization Administration of the People’s Republic of China. Table of ContentsForeword... 3 1 Scope... 4 2 Normative references... 4 3 Ordering content... 6 4 Dimension, shape and weight... 7 5 Technical requirements... 9 6 Inspection and test methods... 13 7 Inspection rules... 14 8 Package, marking, and quality certificate... 15ForewordThis Standard was drafted in accordance with the provisions of GB/T 1.1-2009. This Standard was proposed by China Iron and Steel Industry Association. This Standard shall be under the jurisdiction of National Technical Committee for Standardization of Steel (SAC/TC 183). Drafting organizations of this Standard. Hengyang Hualing Steel Tubes Co., Ltd, Inner Mongolia Baotou Steel Union Co., Ltd, Pangang Group Chengdu Steel & Vanadium Co., Ltd, China Metallurgical Information and Standardization Institute. Main drafters of this Standard. Xiao Songliang, Zhao Bin, Yan Zhuwei, Cheng Haitao, Dong Li, Zhang Min, Cheng Pengfei, Wu Hong. Seamless hot-rolled square and rectangular steel tubes for structure1 ScopeThis Standard specifies the ordering content, dimension, shape and weight, technical requirements, inspection and test methods, inspection rules, package, marking, and quality certificate of seamless hot-rolled square and rectangular steel tubes for structure. This Standard is applicable to the seamless hot-rolled square and rectangular steel tubes for structure.2 Normative referencesThe following documents are essential to the application of this document. For dated references, only the editions with the dates indicated are applicable to this document. For undated references, only the latest editions (including all the amendments) are applicable to this document. GB/T 222 Permissible tolerances for chemical composition of steel products GB/T 223.5 Steel and iron -- Determination of acid-soluble silicon and total silicon content -- Reduced molybdosilicate spectrophotometric method GB/T 223.9 Iron steel and alloy -- Determination of aluminium content -- Chrom azurol S photometric method GB/T 223.12 Methods for chemical analysis of iron, steel and alloy -- The sodium carbonate separation-diphenyl carbazide photometric method for the determination of chromium content GB/T 223.14 Methods for chemical analysis of iron, steel and alloy -- The N- benzoy-N-phenylhydroxylanmine extraction photometric method for the determination of vanadium content3 Ordering contentContracts or orders for ordering steel tubes in accordance with this Standard shall include the following.4 Dimension, shape and weight4.1 Dimension and shape The shape of square and rectangular steel tubes shall conform to the requirements of Figure 1 and Figure 2, respectively. 4.2 Permissible tolerances for dimensions 4.2.1 The permissible tolerances for dimensions of steel tubes shall comply with the provisions of Table 1.When the demander does not specify the permissible tolerance level for dimensions of steel tubes in the contract, the permissible tolerances for dimensions of steel tubes shall comply with the provisions of the dimensional accuracy of the ordinary grade. 4.3 Side convex-concave degree The side convex-concave degree of the square steel tube shall not exceed 1%A. The side convex-concave degree for long and short sides of the rectangular steel tube shall not be greater than 1%A and 1%B, respectively. 4.4 Round radius The round radius (R) of the end face of the steel tube shall not be greater than 3 times the nominal wall thickness (S). 4.6 Torsion value Steel tubes must not be significantly reversed. The torsion value of the full length of the steel tube shall not be greater than (2 + 0.5 × L/1000) mm. 4.7 Side perpendicularity The perpendicularity of two adjacent sides of the steel tube shall be 90° ± 1°. 4.8 Length 4.8.1 Normal length The typical length of the steel tube is 2,000mm to 12,000mm. According to the requirements of the demander, both the supplier and the demander shall negotiate with each other and indicate in the contract that it is allowed to supply steel tubes of other than the specified length. 4.9 End profile The end face of both ends of the steel tube shall be perpendicular to the axis of the steel tube. The burrs at the incisions shall be removed. 4.10 Weight 4.10.1 Delivery weight The steel tube shall be delivered according to the actual weight. The contract states that it can also be delivered in terms of theoretical weight (steel density is taken as 7.85kg/dm3).5 Technical requirements5.1 Designation and chemical composition of steel 5.1.2 The designations of carbon structural steels are Q195, Q215, and Q235. The chemical compositions (smelting analysis) thereof shall comply with the provisions of GB/T 700. 5.1.3 The designations and chemical compositions (smelting analysis) of low- alloy high-strength structural steels shall meet the requirements of Table 2. 5.1.4 The designation of alloy structural steel is 20Mn2.The chemical composition (smelting analysis) thereof shall comply with the provisions of GB/T 3077. 5.2 Manufacturing method 5.2.1 Steel smelting method Steel shall be smelted using the method of electric arc furnace plus external refining or oxygen converter plus external refining. 5.2.3 Steel tube manufacturing method Steel tubes shall be manufactured using the method of hot rolling (expanding) for making seamless tube. When the demander specifies a certain manufacturing method, it shall be specified in the contract. 5.3 Delivery status Steel tubes shall be delivered under hot rolling (expanding) or heat treatment. 5.4 Mechanical properties 5.5 Macroscopic examination Steel tubes directly rolled with continuous casting billets or steel ingots shall be conducted with macroscopic examination. 5.6 Non-metallic inclusions Steel tubes directly rolled with continuous casting billets or steel ingots shall be tested for non-metallic inclusions. The non-metallic inclusions of steel tubes are rated according to the method A in GB/T 10561-2005.A, B, C and D types of inclusions (coarse and fine) shall not exceed Grade 2.5.The total number of fine and coarse grades of A, B, C and D types of inclusions shall not be greater than 6.5, respectively. DS type of inclusions shall not exceed Grade 2.5.6 Inspection and test methods6.1 The chemical compositions of steel tubes shall be analyzed in accordance with the provisions of GB/T 20066.The instrumental analysis of chemical compositions shall be carried out in accordance with the provisions of GB/T 4336, GB/T 20123, GB/T 20124, and GB/T 20125. 6.2 The dimension and shape of the steel tube shall be measured one by one using measuring tools that meet the accuracy requirements. The measuring positions of the side length, side convex-concave degree, and side perpendicularity shall be at least the maximum side length (and not less than 50mm) from both ends of the steel tube. The wall thickness shall be measured at the plane outside the arc at the corner of the steel tube.7 Inspection rules7.1 Inspection and acceptance The inspection and acceptance of steel tubes shall be carried out by the quality and technical supervision department of the supplier. 7.2 Rules for group batch 7.3 Sample size The sample size for the inspection items of steel tubes shall comply with the provisions of Table 5. 7.4 Rules for retesting and determination The rules for retesting and determination of steel tubes shall comply with the provisions of GB/T 2102.8 Package, marking, and quality certificateThe package, marking, and quality certificate of steel tubes shall comply with the provisions of GB/T 2102. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of GB/T 34201-2017 be delivered?Answer: The full copy PDF of English version of GB/T 34201-2017 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.Question 2: Can I share the purchased PDF of GB/T 34201-2017_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 34201-2017_English will be deemed to be sold to your employer/organization who actually paid for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. www.ChineseStandard.us -- GB/T 34201-2017 -- Click this link and select your country/currency to pay, the exact amount in your currency will be printed on the invoice. Full PDF will also be downloaded/emailed in 9 seconds.How to buy and download a true PDF of English version of GB/T 34201-2017?A step-by-step guide to download PDF of GB/T 34201-2017_EnglishStep 1: Visit website https://www.ChineseStandard.net (Pay in USD), or https://www.ChineseStandard.us (Pay in any currencies such as Euro, KRW, JPY, AUD).Step 2: Search keyword "GB/T 34201-2017". Step 3: Click "Add to Cart". If multiple PDFs are required, repeat steps 2 and 3 to add up to 12 PDFs to cart. Step 4: Select payment option (Via payment agents Stripe or PayPal). Step 5: Customize Tax Invoice -- Fill up your email etc. Step 6: Click "Checkout". Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively. Step 8: Optional -- Go to download PDF. Step 9: Optional -- Click Open/Download PDF to download PDFs and invoice. See screenshots for above steps: Steps 1~3 Steps 4~6 Step 7 Step 8 Step 9 |
