BS 1640-4:1968
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Specification for steel butt-welding pipe fittings for the petroleum industry Wrought and cast austenitic chromium-nickel steel fittings. Metric units
Hardcopy , PDF
English
21-03-1968
31-12-2008
Co-operating organizations
Foreword
Specification
1 General
1.1 Scope
1.2 Size and size identification
1.3 Pressure ratings
1.4 Materials
1.5 Manufacture
1.6 Heat treatment
1.7 Descaling
1.8 Repair of defects
2 Dimensions and tolerances
2.1 Dimensions
2.2 Tolerances
3 Workmanship, marking, inspection, testing and
certificate
3.1 Workmanship and finish
3.2 Marking
3.3 Inspection
3.4 Test facilities
3.5 Prototype bursting tests
3.6 Non-destructive testing
3.7 Intercrystalline corrosion test
3.8 Hydrostatic testing
3.9 Certificate
Appendix
A Information to be supplied by the purchaser
Tables
1 Materials and material identification symbols
2 Tolerances
3 Outside diameter and nominal wall thickness of
steel pipe
4 Dimensions of elbows and return bends
5 Dimensions of 90 deg long radius tangent elbows
6 Dimensions of equal tees
7 Dimensions of reducing tees
8 Dimensions of reducers (concentric and eccentric)
9 Dimensions of caps
10 Dimensions of lap-joint stub ends
Figures
1 Welding end for wall thicknesses from 3.2 mm to
22.2 mm inclusive
2 Welding end for wall thicknesses greater than
22.2 mm
3 Typical examples of off-square tolerance X checked
against reference planes
Dimensions and tolerances, materials, methods of manufacture, pressure/temperature ratings, marking, inspection, tests for seamless and fabricated fittings: 45° long radius elbows, 90° long and short radius elbows, 90° long radius tangent elbows, long and short radius return bends, equal and reducing tees, concentric and eccentric reducers, caps and lap-joint stub ends, of sizes 19 mm to 609.5 mm. Welding-neck flanges not included.
| Committee |
ISE/110
|
| DevelopmentNote |
Inactive for the new design. (12/2007)
|
| DocumentType |
Standard
|
| Pages |
20
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy |
| Standards | Relationship |
| UNE-EN IEC 61968-13:2021 | Identical |
| UNE-EN 16068:2012 | Identical |
| UNE-EN ISO 10993-7:2009 | Identical |
| BS 4677:1984 | Specification for arc welding of austenitic stainless steel pipework for carrying fluids |
| BS 853-2:1996 | Specification for vessels for use in heating systems Tubular heat exchangers and storage vessels for building and industrial services |
| BS 4677:1971 | Specification for Class I arc welding of austenitic stainless steel pipework for carrying fluids |
| EI MODEL CODE SAFE PRACTICE PT7 : 1998 | DESIGN, CONSTRUCTION, OPERATION AND MAINTENANCE OF AVIATION FUELLING FACILITIES |
| BS 1502:1968 | Specification for steels for fired and unfired pressure vessels: sections and bars |
| BS 3351:1971 | Specification for piping systems for petroleum refineries and petrochemical plants |
| BS 2926(1970) : LATEST | CHROMIUM AND CHROMIUM NICKEL STEEL ELECTRODES FOR MANUAL METAL ARC WELDING |
| BS 2910:1973 | Methods for radiographic examination of fusion welded circumferential butt joints in steel pipes |
| BS 1503(1969) : LATEST | STEELS FOR FIRED AND UNFIRED PRESSURE VESSELS - FORGINGS |
| BS 1560:1958 | Steel pipe flanges and flanged fittings (nominal sizes 1/2 in to 24 in) for the petroleum industry |
| BS 1506:1986 | Specification for carbon, low alloy and stainless steel bars and billets for bolting material to be used in pressure retaining applications |
| BS 2600:1962 | Radiographic examination of fusion welded butt joints in steel |
| BS 1504:1976 | Specification for steel castings for pressure purposes |
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