GB/T 37055.2-2020 in English

Standard Framework and Technological Evolution

As the second part of the GB/T 37055 series, this standard constructs a standardized coding system in the field of fuels and lubricants, adopting a technical path that combines the line classification method with the series sequence code. Compared with the early industry specifications, the main breakthroughs are reflected in:

Analysis of the core coding system

Classification coding structure

Use a 6-digit hierarchical code starting with 12:

• Major category (12): Overall category of fuels and lubricants
• Middle category (1201-1203): Fuels/gas additives/lubricants
• Minor category (120101, etc.): Such as petroleum distillates, etc.

Benchmark name code

8-digit meaningless sequence code, for example:

Key implementation points

Special attribute processing

Lubricant products need to pay attention to:

• Viscosity grade: SAE standard coding (e.g. 5W30 corresponds to code 27)
• Consistency grade: NLGI classification numbers 1-9 correspond to codes 1-9

Maintenance management mechanism

The standard stipulates that the National Article Coding Standardization Technical Committee (SAC/TC287) shall be responsible for the following:

1. A technical demonstration report shall be submitted for new categories
2. A supplementary notice shall be issued once a year
3. A filing system for enterprise coding administrators shall be established