Standard No.:	GB/T 19326-2022
English Name:	Forged branch outlet fittings
Chinese Name:	锻制支管座
Chinese Classification:	J15    Pipeline fittings
Professional Classification:	GB    National Standard
ICS Classification:	23.040.60 23.040.60    Flanges, couplings and joints 23.040.60
Issued by:	SAMR; SAC
Issued on:	2022-07-11
Implemented on:	2023-2-1
Status:	valid
Superseding:	GB/T 19326-2012 Forged branch outlet fittings,socket-welding,threaded and buttwelding
Language:	English
File Format:	PDF
Word Count:	15000 words
Price(USD):	450.0
Delivery:	via email in 1~5 business day

Forged branch outlet fittings 1 Scope This document specifies the varieties and codes, pressure rating, nozzle dimensions, special branch outlet fittings, order information, shapes, dimensions and tolerances, materials, design and manufacture, heat treatment, inspection and test, marking, surface protection and packaging, product quality certificate and other requirements of forged branch outlet fittings, and also provides an installation guide. This document is applicable to branch outlet fittings forged of steel in piping systems. Note: The branch outlet fittings in this document refer to the reducing branch outlet fittings, i.e., the branch outlet fittings with the main pipe being larger than the branch pipe in diameter. 2 Normative references The following documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 9124 (all parts) Steel pipe flanges GB/T 12459 Steel buttwelding pipe fittings - Types and parameter GB/T 12716 Pipe threads with the thread angle of 60 degrees where pressure-tight joints are made on threads GB/T 14383 Forged fittings, socket-welding and threaded GB/T 18253-2018 Steel and steel products - Types of inspection documents GB/T 20801.3 Pressure piping code - Industrial piping - Part 3: Design and calculation GB/T 28708 Specification for size selection of seamless and welded steel pipe used in piping engineering NB/T 47013.3 Nondestructive testing of pressure equipments - Part 3: Ultrasonic testing NB/T 47013.4 Nondestructive testing of pressure equipments - Part 4: Magnetic particle testing NB/T 47013.5 Nondestructive testing of pressure equipments - Part 5: Penetrant testing 3 Terms and definitions No terms and definitions are listed in this document. 4 Varieties and codes See Table 1 for the varieties and codes of branch outlet fittings.

Foreword I 1 Scope 2 Normative references 3 Terms and definitions 4 Varieties and codes 5 Pressure rating 6 Nozzle dimensions 7 Special branch outlet fittings 8 Order information 9 Shapes, dimensions and tolerances 10 Materials 11 Design, manufacture and installation 12 Heat treatment 13 Inspection and test 14 Marking 15 Surface protection and packaging 16 Product quality certificate Annex A (Normative) Design verification test Annex B (Informative) Installation guide Bibliography