ASME B16.4 2021

$98.04

ASME B16.4 – 2021 Gray Iron Threaded Fittings: Classes 125 and 250

Published By	Publication Date	Number of Pages
ASME	2021	30

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Description

This Standard for gray iron threaded fittings, Classes 125 and 250 covers: (a) pressure-temperature ratings (b) size and method of designating openings of reducing fittings (c) marking (d) material (e) dimensions and tolerances (f) threading, and (g) coatings.

PDF Catalog

PDF Pages	PDF Title
4	CONTENTS
5	FOREWORD
7	ASME B16 COMMITTEE ROSTER
8	CORRESPONDENCE WITH THE B16 COMMITTEE
10	ASME B16.4-2021 SUMMARY OF CHANGES
11	LIST OF CHANGES IN RECORD NUMBER ORDER
12	1 SCOPE 2 GENERAL 2.1 References 2.2 Quality Systems 2.3 Relevant Units 2.4 Service Conditions 2.5 Convention 2.6 Denotation 3 PRESSURE–TEMPERATURE RATINGS
13	4 SIZE 4.1 Nominal Pipe Size 4.2 Reducing Fittings 5 MARKING 6 MATERIAL 7 DIMENSIONS AND TOLERANCES 7.1 General 7.2 Reducing Fittings Figures Figure 4.2-1 Identification of Reducing Fittings Tables Table 3-1 Pressure–Temperature Ratings
14	7.3 Tolerances 8 THREADING 9 RIBS 10 PLUGS, BUSHINGS, AND LOCKNUTS 11 FACE BEVEL 12 COATINGS
15	Table 7.1-1 Dimensions of Class 125 90-deg and 45-deg Elbows, Tees, and Crosses (Straight Sizes)
16	Table 7.1-2 Dimensions of Class 125 90-deg Elbows and Crosses (Reducing Sizes)
18	Table 7.1-3 Dimensions of Class 125 Tees (Reducing Sizes)
21	Table 7.1-4 Dimensions of Class 125 Caps, Reducing Couplings, and Closed- and Open-Pattern Return Bends
23	Table 7.1-5 Dimensions of Class 250 90-deg and 45-deg Elbows, Tees, and Crosses (Straight Sizes)
24	Figure 8-1 Gaging of Chamfered Internal Threads Table 7.3-1 Inspection Tolerances
25	MANDATORY APPENDIX I REFERENCES
26	NONMANDATORY APPENDIX A QUALITY SYSTEM PROGRAM