GB/T 1241-2008 English PDF

US$189.00 · In stock
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GB/T 1241-2008: Marine forged steel male thread stop-check valves
Status: Valid

GB/T 1241: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 1241-2008	189	Add to Cart	3 days	Marine forged steel male thread stop-check valves	Valid
GB/T 1241-1983	199	Add to Cart	2 days	Marine forged steel male thread stop and check valves	Obsolete

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Basic data

Standard ID: GB/T 1241-2008 (GB/T1241-2008)
Description (Translated English): Marine forged steel male thread stop-check valves
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: U52
Classification of International Standard: 47.020.30
Word Count Estimation: 8,896
Date of Issue: 2008-02-03
Date of Implementation: 2008-08-01
Older Standard (superseded by this standard): GB/T 1241-1983
Quoted Standard: GB/T 600; GB/T 699-1999; GB/T 700-2006; GB/T 1220-2007; GB/T 1958; GB/T 3032; GB/T 9440-1988; GB/T 17107-1997; CB * 56; CB/T 3589-1994
Regulation (derived from): National Standard Approval Announcement 2008 No.2 (Total No.115)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the external thread forged steel check valves marine classification and marking, requirements, test methods, inspection rules, signs, packaging and storage. This standard applies to the fuel, oil, freshwater, air and the temperature does not exceed 250��C steam piping systems ship with a closing check valve design, manufacture and acceptance.

GB/T 1241-2008: Marine forged steel male thread stop-check valves

---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.
Marine forged steel male thread stop-check valves ICS 47.020.30 U52 National Standards of People's Republic of China Replacing GB/T 1241-1983 Marine forged steel male thread stop and check valves Posted 2008-02-03 2008-08-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard replaces GB/T 1241-1983 "Marine forged steel male thread stop and check valves." The standards are compared with the GB/T 1241-1983 the following major changes. --- Cutoff valve material modified by Q235-A steel 20 steel; --- Increased the seal down requirements; --- Increased test methods, inspection rules, marking, packaging, and other content. The standard proposed by China State Shipbuilding Corporation. This standard by the National Marine Machinery Standardization Technical Committee piping attachment points Technical Committee. This standard was drafted. Jiangxi Marine Valve Factory, Technical and Economic Research Institute of China Shipbuilding Industry. The main drafters of this standard. Dingyan Yuan, Luo Yuan hair. This standard replaces the standards previously issued as follows. --- GB/T 1241-1976. Marine forged steel male thread stop and check valves

1 Scope

This standard specifies the Marine forged steel male thread stop and check valves (hereinafter referred to as the cut-off valve) classification and marking requirements, test methods, Inspection rules, marking, packaging and storage. With a cut-off valve is located This standard applies to fuel, oil, fresh water, and the air temperature does not exceed 250 ℃ steam ship piping system Design, manufacture and acceptance.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent All amendments (not including errata content) or revisions do not apply to this standard, however, encourage an agreement in accordance with this standard Whether the parties can study the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 600 marine piping valves General technical requirements GB/T 699-1999 quality carbon structural steel GB/T 700-2006 carbon structural steel GB/T 1220-2007 stainless steel rod GB/T 1958 Geometrical Product Specifications (GPS) shape and position tolerance testing requirements Flag GB/T 3032 Ship pipeline accessories GB/T 9440-1988 Malleable Iron Castings GB/T 17107-1997 forging grades and mechanical properties of structural steel CB56 pipe nipple flat shoulder CB/T 3589-1994 Marine valve non-asbestos gaskets and packing material

3 Classification and Marking

Type 3.1 Off valve is divided into two types as follows. A type --- Feed-off valve; Type B --- right angle cut-off valve. 3.2 Basic parameters The basic parameters of the cut-off valve are shown in Table 1. Table 1 Basic parameters of the cut-off valve Type Nominal pressure PN/MPa Nominal diameter DN/mm A, B 4.0 10 ~ 32 3.3 Structure and basic dimensions Stop check valve structure and basic dimensions in Figure 1 and Table 2. ......

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