Standards

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 4153-1999 Active

JB/T 4153-1999 Type shell high temperature permeability test method

Publish Date: 1999-06-24

JB/T 7912-1999 Active

JB/T 7912-1999 General purpose screw threads-Selected slzes for commerclal screws，bolts and nuts

Publish Date: 1999-06-24

JB/T 9220.5-1999 Active

JB/T 9220.5-1999 Chemical analysis methods for acid slay of cupola-Determination of aluminium oxide by volumetric method using sodium f luoride - EDTA

Publish Date: 1999-06-24

JB/T 7949-1999 Active

JB/T 7949-1999

Publish Date: 1999-06-24

JB/T 10045.4-1999 Active

JB/T 10045.4-1999 JBT 10045.4-1999 Thermal cutting: Quality and size deviation of plasma arc cutting

Publish Date: 1999-06-24

JB/T 9185-1999 Active

JB/T 9185-1999 Welding process method for tungsten inert gas (TIG) welding according to JB/T 9185-1999

Publish Date: 1999-06-24

JB/T 10045.5-1999 Active

JB/T 10045.5-1999 Thermal cutting—Model of surface quality for gas cutting

Publish Date: 1999-06-24

JB/T 2980.1-1999 Active

JB/T 2980.1-1999 The method for testing the high-temperature deformation of die casting molds and patterns

Publish Date: 1999-06-24

JB/T 4022.1-1999 Active

JB/T 4022.1-1999 JBT 4022.1-1999 Alloy casting properties determination method: Free wire shrinkage determination method

Publish Date: 1999-06-24

JB/T 4022.2-1999 Active

JB/T 4022.2-1999 The method for determining the casting properties of alloys: Determination of hot crack tendency

Publish Date: 1999-06-24

JB/T 4251-1999 Active

JB/T 4251-1999 Friction welding-General requirements

Publish Date: 1999-06-24