B16.3

[rfb4892]

I have been given the task of creating MI/Galvanized 150# and 300# fittings as SOlid models. I'm looking for complete dimensions to model these parts and wanted to know if B16.3 will provide these. I wanted to know before purchasing the spec if anyone can help.

 

[INTEGRITY]

CONTENTS
Foreword
Scope
2 PressureTemperatureRatings
3Size
4Marking
5Material
6DimensionsandTolerances
7Threading
8Ribs
9 Plugs,Bushings,andLocknuts
10FaceBevel
11Coatings
1IdentificationofReducingFittings
2GagingofChamferedInternalThreads
1PressureTemperatureRatings
2InspectionTolerances
3(StraightSizes)
4 Dimensions of Class 150. 90 deg Elbowsand Crosses (Reducing Sizes)
5 Dimensions of Class 150 Tees (Reducing Sizes)
6 Dimensions of Class 150.45 deg Y-Branches (Straight Sizes)
7 Dimensions of Class 150 Street Tees and 90 deg and 45 deg Street Elbows
8 Dimensions of Class 150 Couplings (Straight and Reducing Sizes)
9 Dimensions of Class 150 Caps
1I O Dimensions of Class 150. Closed-. Medium-.and Open-Pattern Return Bends (StraightSizes)
12 Center-to-End Dimensions of Class 300. 90 deg Elbows (Reducing Sizes)
13 Center-to-End Dimensions of Class 300 Tees (Reducing Sizes)
14 Dimensions of Class 300 Couplings
15 Dimensions of Class 300 Reducing Couplings
16 Dimensions of Class 300 Caps
17 Dimensions of Class 300. 90 deg and 45 deg Street Elbows
18 Dimensions of Class 300 ReturnBends
Figures
Tables
3 Dimensions of Class 150. 90 deg Elbows. Tees. and Crosses. and 45 deg Elbows
1 1 Dimensions of Class 300. 90 degElbows. Tees. and Crosses. and 45 deg Elbows
Mandatory Annex
I References
Nonmandatory Annex
A Q u a l i t y Program

ASME 816.3-1998
MALLEABLE IRON THREADED FllTlNGS
Classes 150 and 300 ..
1 SCOPE
1.1 General
This Standard for malleable ironthreadedfittings,
(u) pressure-temperature ratings,
(6) size and method of designating openings of reduc-
(c) marking,
(d) material,
(e ) dimensions and tolerances,
(f) threading, and
(g) coatings.
1.2References
Classes 150 and 300, covers:
ing fittings,
Standards and specifications adopted by reference in
this Standard are shown in Annex I, whichispart of
this Standard.
1.3 Quality Systems
Requirements relating tothe product manufacturers’
Quality System Programs are described in AnnexA.

6 DIMENSIONS AND TOLERANCES
6.1 General
Tables 3 through 18 of center-to-end dimensions are
given for both straight and reducing fittings.
6.2 Reducing Fittings
The dimensions in Tables 3 through 18 of reducing
fittings are for use only whenmaking patterns for the
specific reducing fitting in question and do not apply
when a larger size patternisbushedtomake the
reducing fitting wanted.
6.3 Tolerances
It is recognized thatsome variations are absolutely
unavoidable in themaking of patterns and castings.
The following tolerances shall be permitted.
(a) Metal Thickness Tolerances. Metal thickness at
no point in the castings shall be lessthan 90% ofthe
value given in the tables.
(b) Center-to-End Tolerances. Permitted tolerances
on the center-to-end dimensions of the fittings are
shown in Table 2. Tolerances for end-to-end dimensions
and lengths of couplings andreducersshallbe twice
MALLEABLE IRON THREADED FllTlNGS

Regards,

 

[prex]

Not all the dimensions are specified in the standard (e.g. corner radii), however as you must start from somewhere...
I think that you would have a clearer picture by holding one of those fittings in your hand.

prex

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