GB/T 586-2015 PDF EnglishUS$90.00 · In stock · Download in 9 seconds
GB/T 586-2015: Marine cast steel flanged check valve Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB/T 586: Historical versions
GB/T 586-2015: Marine cast steel flanged check valve---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/GBT586-2015GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 47.020.30 U 52 Replacing GB/T 586-1999 Marine cast steel flanged check valve Issued on: JULY 3, 2015 Implemented on: OCTOBER 1, 2015 Issued by. General Administration of Quality Supervision, Inspection and Quarantine; Standardization Administration Committee. Table of ContentsForeword ... 3 1 Scope ... 4 2 Normative references ... 4 3 Classification and marking ... 5 4 Requirements ... 9 5 Test methods ... 11 6 Inspection rules ... 12 7 Packaging and storage ... 13ForewordThis Standard was drafted in accordance with the rules given in GB/T 1.1-2009. This Standard replaces GB/T 586-1999 Marine cast steel flanged check valves. Compared with GB/T 586-1999, the main technical modifications are as follows. - added AS type, BS type PN16, DN65 and DN80; - changed valve body, bonnet, valve plate materials; - changed valve body, bonnet sealing surface surfacing materials; - modified structure size according to construction drawings; - modified marking method; - modified flange sealing surface size and bolt hole number according to GB/T 2501; - modified processing requirements according to GB/T 600. This Standard was proposed by China Shipbuilding Industry Corporation. This Standard shall be under the jurisdiction of National Technical Committee on Marine Machinery of Standardization Administration of China (SAC/TC 137). The drafting organizations of this Standard. Dalian Shipbuilding Heavy Industry Group Co., Ltd., Dalian Golden Valve Co., Ltd. Main drafters of this Standard. Yang Mingzhen, Ma Yulong, Liu Xiaopeng, Zhang Ping, Zhang Hezhi, Yu Changkun. Versions of standard substituted by this Standard are. - GB 586-1965, GB 586-1976, GB 586-1984, GB/T 586-1999. Marine cast steel flanged check valve1 ScopeThis Standard specifies the classification and marking, requirements, test methods, inspection rules, packaging and storage for marine cast steel flanged check valve of flange connection size and sealing surface according to GB/T 4196, GB/T 2501 (hereinafter referred to as check valve). This Standard is applicable to the design, manufacture and acceptance of check valve for steam piping system of which the mediums are fresh water, lubricating oil, fuel and temperature does not exceed 300°C.2 Normative referencesThe 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 600-2008, General specifications for marine piping valves and fittings GB/T 699-1999, Quality carbon structural steels GB/T 983-1995, Stainless steel covered electrodes GB/T 1184-1996, Geometrical tolerancing--Geometrical tolerance for features without individual tolerance indications GB/T 1220-2007, Stainless steel bars GB/T 1804-2000, General Tolerances - Tolerances for Linear and Angular Dimensions without Individual Tolerance Indications GB/T 1958, Geometrical product Specifications (GPS) - Geometrical tolerance - Verification prescription GB/T 2501, Connection dimensions and mating face of marine flanges GB/T 3032, Marks for Marine Piping Valves and Fittings GB/T 11698, Metal valves for use in marine flanged pipe systems - Face-to-face and center-to-face dimensions surface steel Bushing Stainless steel 20Cr13 GB/T 1220-2007 4.2 Casting The check valve castings per furnace shall be at least 3 test bars for reference with furnace number. The shelf life shall not be less than 3a. 4.3 Strength The check valve body strength, at 1.5 times design pressure of hydraulic pressure, shall have no leakage. 4.4 Sealability The check valve is in the reverse state. There shall be no leakage between valve plate and valve seat when the sealing surface is reduced from 1.1 times the design pressure to 0.3 MPa. 4.5 Dimensional tolerance 4.5.1 The wall thickness tolerance of check valve shall meet requirements of 3.4 in GB/T 600-2008. 4.5.2 The unnoted linear dimensional tolerance of check valve shall meet requirements of grade m in GB/T 1804-2000. 4.5.3 The structural length tolerance of check valve shall meet requirements of GB/T 11698. 4.6 Geometric tolerance The geometric tolerance of check valve shall meet requirements of grade K in GB/T 1184-1996. 4.7 Appearance The check valve appearance shall meet requirements of 3.10 in GB/T 600-2008. 4.8 Mass See Table 2, Table 3 for check valve mass. The positive deviation of its mass shall not exceed 4% of the theoretical mass. 4.9 Mark The mark for check valve shall meet requirements of GB/T 3032. 8 Mark ● ● 4.9 5.8 NOTE ● for inspection item required; - for inspection item not required. 6.2.3 Quantity of inspection sample The sample quantity for check valve type inspection shall be 3. 6.2.4 Determination rules When all inspection items of check value meet requirements, the type inspection shall be qualified. If material has unqualified check valve, the type inspection shall be determined as unqualified. If there are other unqualified items, it shall double sampling for re-inspection. If the re-inspection meets requirements, the type inspection of check valve shall be determined as qualified. If there is still unqualified item in re-inspection, the type inspection of check valve shall be determined as unqualified. 6.3 Exit-factory inspection 6.3.1 Inspection items and sequence The exit-factory inspection items and sequence of check valve shall be in accordance with the provisions of Table 5. 6.3.2 Inspection quantity For inspection items of check valve, the material inspection shall be carried out in batches; other inspection items shall be carried out in products one by one. 6.3.3 Determination rules The check valve of which all inspection items meet requirements shall be determined as qualified in exit-factory inspection. If the material of the check valve does not meet requirements, this batch shall be unqualified in exit-factory inspection. For inspection of other item, if there is unqualified check valve, the re-inspection shall be carried out after rework. If the re-inspection meets the requirements, this check valve shall be determined as qualified in exit-factory inspection. If the re-inspection still does not meet requirements, this check valve shall be determined as unqualified in exit-factory inspection.7 Packaging and storage7.1 Packaging The packaging of check valve shall be carried out according to the provisions ......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 586-2015 be delivered?Answer: The full copy PDF of English version of GB/T 586-2015 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 586-2015_English with my colleagues?Answer: Yes. 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