GB/T 6948-1998 Replaced National standards

GB/T 6948-1998 Microscopical determination of the reflectance of vitrinite in coal

Publish Date: 1998-12-08 Implement Date: 1999-05-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 6948-1998

Standard Type: National standards

Standard Status: Replaced

is_force_gb: no

CCS Name: \nCoal rock

ICS Name: \nCoal

Publish Date: 1998-12-08

Implement Date: 1999-05-01

Pages: 16 pages

Development Information

Word Count: 25 Thousand words Pages: 16 pages

Replace the following standards

GB 6948-1986

Superseded by the following standards

GB/T 6948-2008 Method of determining microscopically the reflectance of vitrinite in coal

Referenced Standards

GB/T 12937-1995 Terms relating to coal petrology GB/T 15588-1995 GB/T 16773-1997 Method of preparing coal samples for the coal petrographic analysis

Adopt standards

ISO 7404-5:1994(E)

Related Standards

GB 5751-1986 Replaced

GB 5751-1986 Classification of Chinese coals

Publish Date: 1986-01-09

GB 481-1993 abolished_transferred

GB 481-1993 Sampling method of coal sample for production

Publish Date: 1993-02-19

GB/T 15223-1994 Replaced

GB/T 15223-1994 Plastics—Liquid resins—Determination of density by the pyknometer method

Publish Date: 1994-09-24

GB/T 15224.1-1994 Replaced

GB/T 15224.1-1994 Classification for quality of coal—Classification for ash yield of coal

Publish Date: 1994-09-24

GB/T 15224.2-1994 Replaced

GB/T 15224.2-1994 Classification for quality of coal—Classification for sulphur content of coal

Publish Date: 1994-09-24

GB/T 15224.3-1994 Replaced

GB/T 15224.3-1994 Classification for quality of coal—Classification for calorific value of coal

Publish Date: 1994-09-24