Comparison of new and old national standards
Standard number difference
New National Standard No.: GB 36246-2018
Old national standard No.: GB / T 19851.11-2005
The original GB / T (national recommended standard) of the new national standard
Changed to GB (national compulsory standard)
It reflects the national attention to the sports flooring industry
And the determination to rectify the whole industry chaos
This is also one of the biggest differences between the new and old national standards
Type inspection report
A very important content has been added to the new national standard,
Raw materials, pavement and other aspects are all good
Type inspection report is required
After obtaining the qualification of sports facilities
To enter the market
The validity of the inspection report is only one year
Before the introduction of the new national standard
There are no strict access standards
It is usually sent for inspection by the enterprise itself
Thickness requirement
GB / T 19851.11-2005 (abolished)
It is required that the ball producing area should be greater than 7mm
More than 10 mm in track and field
As a recommended national standard
It only plays the role of recommendation and guidance
So most of the former stadiums
The thickness will be about 3 ~ 5mm
And the new national standard gb36246-2018 as a mandatory standard
It has brought great changes
The thickness of ball games should be more than 8mm
At the same time, in order to meet the requirements of regulating the industry market
The thickness of plastic runway is limited to ≥ 13mm.
The thickness specified in the new national standard is as follows:
GB / T 19851.11-2005
Physical requirements
New GB / t19851.11-2005
The surface layer of synthetic material sports ground is added
Cast in situ surface course, precast surface course, artificial grass
Impact absorption, vertical deformation and anti sliding value
Tensile strength, elongation at break and aging resistance
Flame retardancy, slope, thickness
And other items and index requirements
Requirements for thickness in new national standard
At the same time, the requirement of artificial grass is also increased
Chemical requirements
Great changes have been made in the chemical requirements of the new national standard
A lot of harmful substances in the past national standards were limited
At the same time, the requirements of many important chemical substances have been improved
In the old national standard, a total of 7 harmful substances
(four of them are heavy metals) are limited
In the new national standard, this number is 18
And subdivided into harmful substances content
Release of hazardous substances
There are three kinds of smell.
Multi link comprehensive audit
The new national standard has increased the requirements for raw materials, stadiums
Requirements for artificial grass, granules, paving, etc
