Standards

ZB 21001-1990 Active

ZB 21001-1990 The determination method for effective sulfur in coal-related pyrite and sulfur concentrates

Publish Date: 1990-06-29

ZB 21004-1990 Active

ZB 21004-1990 The determination method for arsenic in coal-related pyrite and sulfur concentrates

Publish Date: 1990-06-29

ZB 21002-1990 Active

ZB 21002-1990 Method for the determination of total sulfur, sulfur, hydrochloric acid-soluble sulfur and iron sulfide sulfur in coal-series pyrite and sulfur concentrate - 21002-1990

Publish Date: 1990-06-29

ZB 21003-1990 Active

ZB 21003-1990 The determination of total carbon content in coal-related sulfide ore and sulfur concentrate is as follows: "Total carbon content in coal-related sulfide ore and sulfur concentrate is determined using a method that involves heating the sample in a muffle furnace and measuring the amount of carbon dioxide evolved during the process."

Publish Date: 1990-06-29

ZB 20001-1990 Active

ZB 20001-1990 ZB 20001-1990 Coal Mine Rock Mechanics Terminology

Publish Date: 1990-06-29

ZB 93012-1990 Active

ZB 93012-1990 Mine inclined mine car technology specification

Publish Date: 1990-06-26

ZBW 55003-1990 Active

ZBW 55003-1990 ZBW 55003-1990 rules for inspecting tapestries

Publish Date: 1990-04-24

ZBW 56009-1989 Active

ZBW 56009-1989 rope rug

Publish Date: 1990-04-24

ZBW 55004-1990 Active

ZBW 55004-1990 "ZBW 55004-1990 Determination of shrinkage rate of woven fabrics" Translation: "The measurement of shrinkage rate of woven fabrics"

Publish Date: 1990-04-24

ZBW 59001-1990 Active

ZBW 59001-1990 Nylon 6 impregnated tire cord fabric

Publish Date: 1990-04-16

ZBW 58002-1990 Active

ZBW 58002-1990 Silk sewing thread

Publish Date: 1990-04-16

ZB 92004-1990 Active

ZB 92004-1990 coal mining side-loading rock excavator

Publish Date: 1990-04-09