Light rail Heavy rail 50MN light rail 70MN heavy rail QU80QU100QU70 rail Crane rail

Rail specifications (Kg/m)		Size(mm)				Theoretical weight (Kg/m)
		Rail height	Bottom width	Top width	Waist thickness
Light rail	5	50	44	22	4.5	5.03
	8	65	54	25	7.0	8.42
	9	63.5	63.5	32.1	5.9	8.94
	12	69.85	69.85	38.1	7.54	12.2
	15	79.37	79.37	42.86	8.33	15.2
	18	90	80	40	10.0	18.06
	22	93.66	93.66	50.8	10.72	22.3
	24	107	92	51	10.9	24.46
	30	107.95	107.95	60.33	12.3	30.1
Heavy rail	38	134	114	68	13.0	38.73
	43	140	114	70	14.5	44.65
	50	152	132	70	15.5	51.51
Super heavy rail	70	120	120	70	28.0	52.8
	80	130	130	80	32.0	63.69
	100	150	150	100	38.0	88.96
	120	170	170	120	44.0	118.1

 

Railway rails are referred to as rails, rails, rails, etc. They are used on railways and cooperate with switches to enable trains to travel without turning. The track is usually composed of two parallel steel rails. The rails are fixed on the sleepers. Under the sleepers is the ballast, which also includes roadbed, connecting parts of the rails, etc.

The subgrade is the foundation of railway tracks or road pavements. It is a structure that bears and transmits the gravity of the track and the dynamic effects of the train. It is an important structure to ensure the operation of the train. The subgrade needs to have sufficient strength and stability, that is, the foundation should not undergo excessive settlement under its own static force; excessive elastic and plastic deformation should not occur under the action of vehicle dynamics; the subgrade slope should be stable and stable for a long time. No slumping. To this end, some subgrade ancillary structures such as drainage ditches, slope protection, and retaining structures must be built next to it. The roadbed is a linear structure with long routes and wide contact with nature.

From bottom to top, the track structure consists of the track bed located on the top surface of the roadbed, the sleepers embedded in the track bed, and the rails connected to the sleepers by connecting components. The function of the track bed is to transmit the dynamic and static loads of itself and above to the roadbed, and prevent the sleepers from displacement; the sleepers are used to bear the load from the rails and transmit it to the track bed together with their own weight; the rails are the uppermost part of the track The structure directly bears the wheel load and guides the movement of rolling stock.

The roadbed consists of two parts: the roadbed body and ancillary facilities. The subgrade surface, subgrade and subgrade slope constitute the subgrade body; subgrade ancillary facilities are to ensure the strength and stability of the subgrade, including drainage facilities, protective facilities and reinforcement facilities. Drainage facilities include drainage ditches, etc., and protective facilities such as planting grass and trees. etc. Reinforcement facilities include retaining walls, buttress supporting structures, etc.

Rails are the basic load-bearing structure of railway tracks, used to guide rolling stock while providing a contact surface with minimal resistance for the rolling wheels. Rails are required to have sufficient load-bearing capacity, bending strength, fracture toughness, stability and corrosion resistance. The track bed under the rails is generally laid with sleepers horizontally. The sleepers bear the pressure from the rails and transmit it to the track bed. At the same time, fasteners are used to effectively maintain the gauge and position of the track.

Rail connecting parts include joint connecting parts and intermediate connecting parts. The rail joint connecting parts are composed of splints, bolts, spring washers, etc., and their function is to connect the rails at the joint so that the rail joint part has the same integrity as the rail to resist bending and displacement. The joints must also meet the rail expansion and contraction requirements. The connection between rails and sleepers is achieved through intermediate connection parts. The intermediate connection parts, also called fasteners, are required to have sufficient strength, durability and a certain elasticity to effectively maintain the reliable connection between the rail and the sleeper for a long time, prevent the movement of the rail relative to the sleeper, and fully exert its function under the action of power. Buffering and shock-absorbing performance, delaying the accumulation of residual track deformation

 

Common grades:

(1) Light rail model, material: Q235, 55Q; specifications: 30kg/m, 24kg/m, 22kg/m, 18kg/m, 15kg/m, 12kg/m, 8kg/m.

 

(2) Heavy rail model, material: 45MN, 71MN; specifications: 50kg/m, 43kg/m, 38kg/m, 33kg/m.

 

(3) Lifting rail model, material: U71MN; specifications: QU70 kg/m, QU80 kg/m, QU100 kg/m, QU120 kg/m.

 

  Agent steel mills: Yongyang, Hangzhou Iron and Steel, Anshan Iron and Steel, Panzhihua Iron and Steel, Wuhan Iron and Steel, Baotou Iron and Steel, etc.

 

  Product Notes:

 

1. Specification range: A—rail height B—bottom width C—head width D—waist thickness. Both spot and futures are available.

 

2. Delivery status: According to the user's requirements, it can be delivered in different statuses such as hot rolling, normalizing, tempering, normalizing plus tempering, quenching and tempering, etc.

 

3. Implementation standards: According to user requirements, delivery can be made according to the following standards: national standards, metallurgical industry standards, American ASTM, ASME standards, Japanese JIS, German DIN, British BS, European EN, international ISO standards and special plate-related standards wait.

 

4. Quality levels: A, B, C, D, E and thickness direction Z15, Z25, Z35.

 

5. Flaw detection standards: can be based on China (JB4730, GB/T2970), the United States (A435, A577, A588), Japan (JISG0801, JISG0901), Germany (SEL072), the United Kingdom (BS5996), France (NFS04-305) and other domestic Standard production inspection for external flaw detection.