Standards

JB/T 3999-1999 Abolished

JB/T 3999-1999 Carburizing and carbon nitrogen alloying followed by quenching, tempering and hardening of steel parts

Publish Date: 1999-06-24

JB/T 7951-1999 Abolished

JB/T 7951-1999 Test method for cooling performance of quenching medium

Publish Date: 1999-06-24

JB/T 9209-1999 Abolished

JB/T 9209-1999 JBT 9209-1999 Chemical heat treatment coating agent technical specification

Publish Date: 1999-06-24

JB/T 9197-1999 Abolished

JB/T 9197-1999 Stainless steel and heat-resistant steel heat treatment

Publish Date: 1999-06-24

JB/T 9198-1999 Abolished

JB/T 9198-1999 Sulfur, nitrogen, and carbon immersion treatment

Publish Date: 1999-06-24

JB/T 9204-1999 Abolished

JB/T 9204-1999 Steel parts induction hardening metallographic inspection

Publish Date: 1999-06-24

JB/T 9205-1999 Abolished

JB/T 9205-1999 JBT 9205-1999 Pigmented spheroidal graphite cast iron parts inspection for induction hardening microstructure

Publish Date: 1999-06-24

JB/T 9211-1999 Abolished

JB/T 9211-1999 Medium carbon steel and medium carbon alloy structural steel are both types of steels with a martensitic microstructure

Publish Date: 1999-06-24

JB/T 4202-1999 Abolished

JB/T 4202-1999 The forging, heat treatment, and quenching and tempering of steel

Publish Date: 1999-06-24

JB/T 4390-1999 Abolished

JB/T 4390-1999 High and medium temperature heat treatment salt bath corrector

Publish Date: 1999-06-24

JB/T 9200-1999 Abolished

JB/T 9200-1999 Steel parts flame hardening and tempering treatment

Publish Date: 1999-06-24

JB/T 9203-1999 Abolished

JB/T 9203-1999 solid carburizing agent

Publish Date: 1999-06-24