BS 1640-3:1968
Current
The latest, up-to-date edition.
Specification for steel butt-welding pipe fittings for the petroleum industry Wrought carbon and ferritic alloy steel fittings. Metric units
Hardcopy , PDF
English
22-03-1968
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
2 Dimensions and tolerances
2.1 Dimensions
2.2 Tolerances
3 Workmanship, marking, inspection, testing and
certification
3.1 Workmanship and finish
3.2 Marking
3.3 Inspection
3.4 Test facilities
3.5 Prototype bursting tests
3.6 Radiographic examination of fittings fabricated by
fusion welding
3.7 Radiographic technique and acceptance limits
3.8 Impact testing
3.9 Hydrostatic testing
3.10 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 4.8 mm to
22 mm inclusive
2 Welding end for wall thicknesses greater than
22 mm
3 Typical examples of off-square tolerance 'X'
checked against reference planes
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