No.	Item	Specification	Quantity/Pcs	Material	Description
1	Tension Clamp	W5	2	60Si2Mn	Clamping Force：≥ 10kN。
2	Nut	M24	2	Q235-A	GB/T 41-2016
3	Flat Washer	–	2	Q235-A	TB/T 1495-2020
4	T Bolt	T3	2	Q235-A	When fastening the elastic clip, lubricating oil must be applied to the threaded part; lubricating oil may also be applied to the nut.
5	Rail Gauge Baffle	WJ12	2	QT 450-10	①Mechanical Properties Tensile StrengthR_m：≥ 450MPa， Elongation after Fracture A：≥ 10%; ②Tensile Performance：Cast Shoulder shall sustain no damage after being subjected to a 100 kN tensile test.
6	Cast Shoulder	WJ12	2	QT 450-10
7	Rail Gauge Insulator	WJ12	2	PA66+30%GF	①Water Drainage Rate：≥ 0.5%; ②Plastic Rockwell Hardness：≥ 105HRR ③Shear Resistance：No rupture after applying 4.5 kN shear force to both ears; ④Impact Toughness: No rupture after 6 impact tests; ⑤Internal Voids: No bubbles or voids allowed.
8	Rail Pad	WJ12	1	EVA	①shore D：32～50; ②Tensile Strength：≥ 10MPa。
9	Rail Tie Plate	WJ12	1	Q235-A	Mechanical Properties Tensile Strength R_m：≥ 370MPa， Yield Strength R_eH：≥ 235MPa， Elongation A：≥ 26%。
10	Resilient Tie Plate	WJ12	1	TPEE/TPU	①Static Stiffness：50±10kN/㎜; ②Dynamic and Static Stiffness Ratio：≤ 2.0 ③The static stiffness can also be engineered to meet specific line requirements.
11	Height Adjustment Pad for the Rail Gauge Baffle	WJ12	–	HDPE
12	Standard Height Adjustment Pad	WJ12	1	HDPE

Execution Standards			China	Q/CR 479-2015		WJ-12 Fastening System for 30-ton Axle Load Heavy-haul Railways
			Other Countries	EN 13481-2 E类		Railway applications – Rail -Performance Indicators of fastening system concrete sleepers fastening system
No.	Items			Performance Indicators
				China	Test Method			Other Countries	Test Method
1	Maximum axle load			30t				35t
2	Minimum curve radius			R400m				R150m
3	Speed			≤120km/h				≤ 120km/h
4	Longitudinal rail resistance			≥ 10kN	TB/T 3396.1-2015			≥ 9kN	EN 13146-1
5	System clamping force			≥ 20kN	TB/T 3396.2-2015			≥ 20kN	EN 13146-7
6	System Fatigue Performance	Dual rail gauge		≤ 6㎜	TB/T 3396.4-2015		/	≤ 6㎜	EN 13146-4	/
		Resistance change rate		≤ 20%			TB/T 3396.1-2015	≤ 20%		EN 13146-1
		Vertical stiffness		≤ 25%			TB/T 3396.3-2015	≤ 25%		EN 13146-9
		Clamping force change rate		≤ 20%			TB/T 3396.2-2015	≤ 20%		EN 13146-7
7	Electrical resistance			≥ 5kΩ	TB/T 3396.5-2015			≥ 5kΩ	EN 13146-5
8	Effect of exposure to severe environmental conditions			Smooth disassembly	TB/T 3396.6-2015			Smooth disassembly	EN 13146-6
9	Proof load test for pull-out resistance			≥ 60kN	TB/T 3396.7-2015			≥ 60kN	EN 13146-10
10	Gauge adjustment range			-12～+8㎜
11	Level adjustment range			-4～+16㎜

WJ-12 Fastening System

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