Standards

JB/T 9171-1999 Active

JB/T 9171-1999 Gear flame and induction hardening process and its quality control

Publish Date: 1999-06-24

JB/T 9172-1999 Active

JB/T 9172-1999 Gear nitriding, nitrogen carbon simultaneous nitriding process and quality control

Publish Date: 1999-06-24

JB/T 4403-1999 Abolished

JB/T 4403-1999 Worm-cast iron parts

Publish Date: 1999-06-24

JB/T 9176-1999 Active

JB/T 9176-1999

Publish Date: 1999-06-24

JB/T 9178.1-1999 Abolished

JB/T 9178.1-1999 Free forging parts for hydraulic press general technical specification

Publish Date: 1999-06-24

JB/T 9228-1999 Abolished

JB/T 9228-1999

Publish Date: 1999-06-24

JB/T 9220.11-1999 Active

JB/T 9220.11-1999 Chemical analysis methods for acid slay of cupola-Determination of sulphur by volumetric method using combustion of potassium iodate

Publish Date: 1999-06-24

JB/T 4251-1999 Active

JB/T 4251-1999 Friction welding-General requirements

Publish Date: 1999-06-24

JB/T 9194-1999 Abolished

JB/T 9194-1999 Roll forging die structure and dimensions

Publish Date: 1999-06-24

JB/T 4385.1-1999 Active

JB/T 4385.1-1999 Hammer-freestone forgings general technical specification

Publish Date: 1999-06-24

JB/T 9181-1999 Abolished

JB/T 9181-1999 Precision hot forging structure design specifications for straight bevel gears

Publish Date: 1999-06-24

JB/T 9174-1999 Abolished

JB/T 9174-1999 Material consumption process quota for die forging parts and method of preparation

Publish Date: 1999-06-24