JB/T 74-2015
Specification for steel pipe flanges (English Version)

Standard No.

JB/T 74-2015

Language

Chinese, Available in English version

Release Date

2015

Published By

Professional Standard - Machinery

Latest

JB/T 74-2015

Replace

JB/T 74-1994

Scope

This standard specifies the materials, pressure-temperature ratings, dimensions and tolerances, connection sealing surfaces, fasteners and gaskets, welding end types and dimensions, processing and manufacturing, testing, and inspection of steel pipeline flanges and flange covers. and acceptance, marking and supply requirements. This standard applies to steel pipeline flanges and flange covers specified in JB/T 75, JB/T 79, and JB/T 81~86.

JB/T 74-2015 Referenced Document

• GB 3531 Steel plates for low temperature pressure vessels
• GB 713 Steel plates for boilers and pressure vessels
• GB/T 12228 General purpose industrial valves.Specification of carbon steel forgings
• GB/T 12229 General Purpose industrial valves.Specification of carbon steel castings
• GB/T 12230 Specifications for stainless steel castings for general valves*， 2023-05-23 Update
• GB/T 14976 Seamless stainless steel pipes for fluid transport
• GB/T 152.4 Fasteners--Counterbores for hexagon bolts and nuts
• GB/T 15601 Metallic envelope gaskets for pipe flanges
• GB/T 16253 Steel castings for pressure purposes*， 2019-08-30 Update
• GB/T 1804 General tolerances Tolerances for linear and angular dimensions without individual tolerance indications
• GB/T 4237 Hot rolled stainless steel plate,sheet and strip
• GB/T 700 Carbon structural steels
• GB/T 711 Hot-rolled quality carbon structural steel plates sheets and strips*， 2017-02-28 Update
• GB/T 9125 Fasteners for pipe flange joints
• JB/T 5263 Specification for steel casting for power station valves
• JB/T 7248 Technical specification for low temperature service steel casting for valves
• JB/T 75 Steel pipe flanges.Types and parameters
• JB/T 79 Integral steel pipe flanges
• JB/T 81 Slip-on-welding plate steel pipe flanges
• JB/T 82 Steel pipe welding neck flanges
• JB/T 83 Loose plate steel pipe flanges with weld-on collar
• JB/T 84 Loose plate flange with weld-neck collar
• JB/T 85 Steel pipe welding neck flanges
• JB/T 86 Steel pipe blank flanges
• JB/T 87 Non-metallic flat gaskets for pipe flanges
• JB/T 88 Serrated metal gaskets for pipe flanges
• JB/T 89 Metallic ring-joint gaskets for steel pipe flanges
• JB/T 90 Spiral wound gaskets for pipe flanges

JB/T 74-2015 history

• 2015 JB/T 74-2015 Specification for steel pipe flanges
• 1994 JB/T 74-1994 Pipeline flange Technical conditions