GB/T 4450-2008Marine blank steel flanges (English PDF)
船用盲板钢法兰
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
February 14, 2008
Implementation date
September 1, 2008
Scope
GB/T 4450-2008 is the English-translated version of 船用盲板钢法兰.
GB/T 4450-2008 is the Chinese standard "Marine blank steel flanges". Its scope clause reads: This standard specifies the flange connection dimensions according to GB/T 569 and GB/T 2501 marine blind steel flanges (hereinafter referred to as blind flange) Classification, requirements, test methods, inspection rules, marking, packaging and storage.
This standard applies to nominal pressure not more than 1.6MPa, medium is air, water, fresh water, and oil temperature not higher than 300 °C steam Steam blind flange design, manufacture and acceptance.
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Document preview — GB/T 4450-2008
National Standard of the People's Republic of China
- ICS
- 47.020.30
- Classification
- U 55
- Replacing
- GB/T 4450-1995
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 3.2 Basic parameters
- 3.3 Structure and basic dimensions
1 Scope
This standard specifies the flange connection dimensions according to GB/T 569 and GB/T 2501 marine blind steel flanges (hereinafter referred to as blind flange)
Classification, requirements, test methods, inspection rules, marking, packaging and storage.
This standard applies to nominal pressure not more than 1.6MPa, medium is air, water, fresh water, and oil temperature not higher than 300 °C steam
Steam blind flange 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
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 569 Marine flange connection dimensions and sealing surface
GB/T 700-2006 carbon structural steel
GB 712-2000 hull structural steel
GB/T 1184-1996 shape and position tolerances without individual tolerance value (eqv ISO 2768-2. 1989)
GB/T 1958 Geometrical Product Specifications (GPS) shape and position tolerance testing requirements
GB/T 2501 Marine flange connection dimensions and sealing surface (four into position)
Category 3
Type 3.1
Blind flange divided into the following four categories.
A type --- flange dimensions according to GB/T 569 marine blind steel flanges.
AS type --- flange dimensions according to GB/T 2501 marine blind steel flanges.
Type B --- flange dimensions according to GB/T 569 marine double blind steel flanges.
BS type --- flange dimensions according to GB/T 2501 marine double blind steel flanges.
3.2 Basic parameters
The basic parameters are shown in Table 1 blind flange.
Table 1 blind flange basic parameters
Types of
Nominal pressure PN /
MPa
Nominal diameter DN / mm
A 0.6,1.0,1.6 20 ~ 500
AS 0.6 15 ~ 1000
1.0,1.6 ~ 600 15
BS 0.6,1.0,1.6
20 to 500
15 to 500
3.3 Structure and basic dimensions
Structure and basic dimensions 3.3.1 A blind flange type according to Figure 1 and Table 2.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Similar standards
Editions of GB/T 4450
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 4450-2008 | Marine blank steel flanges | current edition | Current |
| GB/T 4450-1995 | Marine blank steel flanges | previous edition | Superseded |
This page sells the current edition, GB/T 4450-2008. Earlier editions are listed for reference only.
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