GB/T 4985-1998
Determination of needle penetration of petroleum waxes (English Version)

Standard No.

GB/T 4985-1998

Language

Chinese, Available in English version

Release Date

1998

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Status

Be replaced 2010-12

Replace By

GB/T 4985-2010

Latest

GB/T 4985-2021

Scope

This standard specifies the method for evaluating the hardness of petroleum wax by measuring the penetration depth of a standard needle. This standard applies to petroleum waxes with a density value not greater than 250.

GB/T 4985-1998 history

• 2021 GB/T 4985-2021 Standard test method for needle penetration of petroleum waxes
• 2010 GB/T 4985-2010 Standard test method for needle penetration of petroleum waxes
• 1998 GB/T 4985-1998 Determination of needle penetration of petroleum waxes