bitumen supplier in china with chinese standard

Article

China bitumen production capacity

ATDM is main bitumen supplier in china since 2006 Chinese bitumen manufacturer producing 33 million tons of bitumen annually and importing 20 million tons also from Iran, Korea and Thailand in bag, drum, flexi and bulk vessel.

We export bitumen to china with Chinese standards.

As of my last knowledge update in January 2022, the specific standards for bitumen in China may be subject to updates or changes. However, as of that time, bitumen standards in China were mainly governed by the following specifications:

Differences of ASTM with Chinese standard?

The main items is ductility that in Chinese standard at 15 centigrade should be 100cm but ASTM standard at 25C is 100CM and the rest index is same.

Question on different grade of bitumen in China

1. Different penetration levels

The penetration of No. 30 asphalt is 20~40.

The penetration of No. 70 asphalt is 60~80.

2. Different ductility

The ductility of No. 30 asphalt is ≥ 50.

The penetration of No. 70 asphalt is ≥100.

3. Different softening points

The softening point of No. 30 asphalt is 55~72.

The softening point of No. 70 asphalt is 44~54.

1. The softening points of 70# asphalt and 90# asphalt are different.

(1) The softening point of 70# asphalt is 46 degrees Celsius.

(2) The softening point of 90# asphalt is 45 degrees Celsius.

2. The penetration of 70# asphalt and 90# asphalt is different.

(1) The penetration of 70# asphalt is 60-80.

(2) The penetration of 90# asphalt is 80-100.

3. The ductility of 70# asphalt and 90# asphalt is different.

(1) The ductility of 70# asphalt is 25.

(2) The ductility of 90# asphalt is 45.

4. The dynamic viscosity of 70# asphalt and 90# asphalt are different.

(1) The dynamic viscosity of 70# asphalt is 180Pa·s.

(2) The dynamic viscosity of 90# asphalt is 160Pa·s.

Usage of different grade of bitumen in different province of china

We are supplier of bitumen in China graded by penetration, No. 10 asphalt and No. 70 asphalt refer to the depth of penetration of the asphalt. The depth of No. 10 asphalt (penetration 80-100) indicates that the asphalt is soft, and No. 70 asphalt is hard (penetration 60). -80), after such classification, the temperature in the north is low and soft asphalt should be used, while the temperature in the south is high and hard asphalt should be used.

Shandong province bitumen supplier

Generally, No. 90 asphalt is used in the north and west of Shandong, and even No. 110 asphalt is used in colder areas, while No. 70 asphalt is used in the south of Shandong.

What Chinese bitumen buyers to pay attention to is that the prices of 70 and 90 are the same, but there may be regional differences. For example, if you are in the north and use less 70 asphalt, you may have more inventory, so it is cheaper than 90, or if you use 90 in the south, Less, it can be cheaper than 70 for shipping.

Petroleum Asphalts for Heavy Traffic Road Pavement

GB/T 15171-2017: Asphalt for Road and Bridge Construction: This standard specifies the requirements, test methods, inspection rules, marking, packaging, transportation, storage, and quality certificate of asphalt for road and bridge construction.
GB/T 8161-2008: Test Method for Determination of Fraass Breaking Point of Bitumen: This standard specifies a method for determining the Fraass breaking point of bitumen.
GB/T 4509-2010: Test Methods for Softening Point of Bitumen (Ring-and-Ball Apparatus): This standard specifies the test method for the determination of the softening point of bitumen using the ring-and-ball apparatus.
GB/T 4508-2010: Test Methods for Penetration of Bitumen: This standard specifies the test method for the determination of the penetration of bitumen.

Popular bitumen specification in China

70A Bitumen or Bitumen AH70

Item		JTG F40-2004 Technical requirements	ATDM
Penetration (25℃, 100g, 5s), 0.1mm		60～80	77
Penetration Index (PI)		-1.5～+1.0	-0.97
Softening Point (ring and ball method), ℃		≥46	48.0
Extensibility (10℃, 5cm/min), cm		≥20	84
Extensibility (15℃, 5cm/min), cm		≥100	>100
Dynamic Viscosity at 60℃, Pa.s		≥180	211.5
Flash Point, ℃		≥260	334
Solubility, %		≥99.5	99.96
Density (15℃), g/cm3		Measured Value	1.038
Wax Content, %		≤2.2	2.1
Thin Film Oven 163℃, 5h	Quality Change, %	±0.8	-0.302
	Penetration Ratio, %	≥61	64.9
	Extensibility (10℃), cm	≥6	7

90A bitumen or Bitumen AH90

Item		JTG F40-2004 Technical requirements	ATDM
Penetration (25℃, 100g, 5s), 0.1mm		80～100	92
Penetration Index (PI)		-1.5～+1.0	-0.93
Softening Point (ring and ball method), ℃		≥45	46.5
Extensibility (10℃, 5cm/min), cm		≥45	>100
Extensibility (15℃, 5cm/min), cm		≥100	>100
Dynamic Viscosity at 60℃, Pa.s		≥160	179.6
Flash Point, ℃		≥260	331
Solubility, %		≥99.5	99.94
Density (15℃), g/cm3		Measured Value	1.035
Wax Content, %		≤2.2	1.7
Thin Film Oven 163℃, 5h	Quality Change, %	±0.8	-0.046
	Penetration Ratio, %	≥57	69.6
	Extensibility (10℃), cm	≥8	14

SBS Modified bitumen

Item		JTG F40-2004 I-C Technical requirements	JTG F40-2004 I-D Technical requirements	Modified bitumen of ATDM	Basekim Modified bitumen
Penetration (25℃, 100g, 5s), 0.1mm		60～80	40～60	76	51
Penetration Index (PI)		≥-0.4	≥0	+1.04	+0.31
Softening Point (ring and ball method), ℃		≥55	≥60	79.5	84.5
Extensibility (5℃, 5cm/min), cm		≥30	≥20	42	30
Kinematic Viscosity (135℃), Pa.s		≤3	≤3	1.8	2.3
Flash Point, ℃		≥230	≥230	327	302
Solubility, %		≥99	≥99	99.88	99.70
Elastic Recovery (25℃), %		≥65	≥75	95	96
Separation, 48h Softening Point Difference, ℃		≤2.5	≤2.5	0.2	0.4
Thin Film Oven 163℃，5h	Quality Change, %	±1.0	±1.0	+0.011	-0.04
	Penetration Ratio, %	≥60	≥65	78	76
	Extensibility (5℃), cm	≥20	≥15	26	17