Railway Concrete Sleeper On Sale - Gnee Rail Fasteners

Product Description

Gnee concrete sleepers have a variety of specifications, including ordinary sleepers, turnout sleepers (ordinary type, standard type), bridge sleepers, etc. Different types of sleepers have different widths, thicknesses, and lengths to meet different track requirements.

Railway sleepers: used for laying railway mainline lines.
Special rail sleepers: used for specific occasions, such as mine tracks.
Erection sleepers: used for track laying of structures such as bridges.

Specifications of railway concrete sleepers

Ordinary concrete sleepers: width 220mm, thickness 160mm, length 2500mm;
Turnout concrete sleepers (ordinary): width 220mm, thickness 160mm, length 2600~4850mm, with 150mm increments, and a total of 16 length specifications;
Turnout concrete sleepers (standard): width 240mm, thickness 160mm, length 2600~4800mm, in increments of 200mm, with a total of 12 length specifications;
Bridge concrete sleepers: width 220mm, thickness 240, 260, 280, 300mm, length 3000mm.

Advantages of Gnee Railway Concrete Sleepers

Strong stability: Railway concrete sleepers have high stability and are not affected by external conditions such as weather temperature;
Long service life: Due to its material and manufacturing process, the service life of cement sleepers is much longer than that of wooden sleepers
Good insulation: Cement sleepers have good insulation properties and are suitable for various electrified railway systems;
Low maintenance costs: Compared with other types of sleepers, cement sleepers have lower maintenance and maintenance costs.

Precautions For Using Concrete Sleepers

It is heavier, so it is not suitable for use in unstable roadbeds and new roadbeds;
In areas with frost heave in winter, concrete sleepers are generally not allowed to be used;
In railway sections that transport coal and ore, or in heavily polluted roadbeds, it is best not to use a large number of concrete sleepers.

Classification of Concrete sleepers

Concrete sleepers are divided into mono, combined and half sleepers according to structure;
Concrete sleepers are divided into reinforced concrete sleepers and prestressed reinforced concrete sleepers according to reinforcement;
According to prestressing application, they are divided into pre-tensioning, post-tensioning and continuous reinforcement;
Concrete sleepers are divided into 1435mm standard gauge and 600, 762, 1000mm narrow gauge concrete sleepers according to gauge.

Additional information

Size	Standard, customizable
MOQ	100 pieces
Offer Ability	3000 tons/month
Loading Port	Shanghai ,Tianjin, Qingdao
Delivery Time	15-30 working days

Hot Sale Rail Concrete Sleepers

The following are two commonly used sleepers produced by Gnee:

Reinforced Concrete Sleepers

Divided into mono block concrete sleepers and twin block concrete sleepers.

Mono block sleepers

Monoblock concrete sleepers are concrete railway sleepers that run horizontally and support two rails.

monoblock railconcrete sleepers

Twin block sleepers

Twin block sleepers consist of two reinforced concrete blocks that support the rails and contain a fastening system. Twin block sleepers are one sleeper under each rail, with a steel tie between the rails and a steel crossbar to maintain the correct track gauge. They are usually made of dry, low-workability concrete.

twin block concrete sleeper

Prestressed Concrete Sleepers

Prestressed concrete sleepers are currently the most common type of sleepers. They can save steel and have good track stability, making them suitable for high-speed and high-capacity railways.
Integral prestressed concrete sleepers are the main type of sleepers in ballasted tracks.

prestressed concrete sleeper

Monoblock prestressed concrete sleepers have a total length of about 2750 mm and weigh about 270 kg. The sleepers have a trapezoidal cross-section with a top width of 154 mm, a bottom width of 250 mm, and a rail seat height of 210 mm.

Structural features

Prestressed concrete sleepers are usually made of high-strength concrete and prestressed steel bars. Their structural design is designed to improve the load-bearing capacity and durability of sleepers.
The cross-sectional design of sleepers usually includes two parts: the rail underside and the middle of the sleeper. The size and configuration of different parts may be different to adapt to different loads and usage environments.

Specifications:

Model	Length (mm)	Height of section under rail(mm)	Height of section in the middle of rail(mm)	Maximum width(mm)	Weight(kg)	Static load cracking strength under rail (kN)	Static load cracking strength in the middle of rail(kN)
YⅡ-F	2500	201	165	294.5	258	≥170kN	≥110kN
New Ⅱ	2500	205	175	306.5	283	≥170kN	≥125kN
ⅡZQ-C	2500	201	221.5	274.5	289	≥160kN	≥140kN
IIIa	2600	230	185	320	320	≥210kN	≥170kN
Type IIIb	2600	230	185	318	376	≥210kN	≥170kN
Type IIIQ	2600	210	195	320	362	≥200kN	≥190kN

Advantages of Gnee Rail Concrete Sleepers

Quality and supply guarantee: Our molds are made of steel and steam demoulding and curing are used, which makes the appearance and quality of the products far better than those of the same industry. Steam demoulding and curing allow us to process and produce even in cold weather, ensuring product quality and ensuring that there will be no interruption in product supply.

Gnee provides various types and models of sleepers:
YII-F type sleepers, XII type sleepers, IIIa type sleepers;
New III type bridge sleepers, AIII type sleepers, IIIqc type sleepers, wide sleepers, small radius curve sleepers, various types of turnout sleepers;
Subway sleepers, subway turnout sleepers (ballasted), subway turnout sleepers (ballastless), subway blocks;
SK-I double block sleepers, SK-II double block sleepers;
High-speed rail sleepers, high-speed rail line-SK-I type, high-speed rail line-SK-II type, high-speed rail line-transition section sleepers;
Electrically insulated section sleepers-rail Special pillows for track circuits: Type XII electrical insulation section pillow, Type IIIa electrical insulation section pillow, Type IIIc electrical insulation section pillow, new type III bridge electrical insulation section pillow, IIIqc electrical insulation section pillow, Type XII electromagnetic induction application pillow, Type IIIa electromagnetic induction application pillow, Type IIIc electromagnetic induction special pillow, new type III bridge electromagnetic induction special pillow, IIIqc electromagnetic induction special pillow, capacitor pillow – special pillow for track circuits, Type XII capacitor pillow, Type IIIa capacitor sleepers, Type IIIc capacitor sleepers, new type III bridge capacitor sleepers, IIIqc capacitor sleepers

Inspection Of Concrete Sleepers

After long-term use, concrete sleepers may have the following problems:

Obvious breakage: Rail concrete sleepers may break significantly when subjected to huge external impact or long-term overload pressure. This situation not only affects the stability of the track, but may also lead to serious consequences such as train derailment.
Crack problems: including circumferential cracks and longitudinal cracks. Circumferential cracks with a width of more than 0.5mm or longitudinal cracks with a width of more than 0.5mm and a length of more than half of the total length of the sleeper are considered serious problems. The appearance of cracks will weaken the bearing capacity of the sleeper, accelerate the corrosion of the internal steel bars, and thus affect its service life.
Crushing of the bearing groove surface: The bearing groove surface is the part of the concrete sleeper that directly bears the train load. When it collapses due to long-term pressure, the rails cannot be placed correctly, affecting the smooth operation of the train.
Severe damage to the shoulder: The shoulder is the key part on both sides of the concrete sleeper for fixing the position of the rails. Once it is severely damaged, it will not be able to effectively limit the lateral movement of the rails, increasing the risk of track deformation.
Cross-cutting of vertical and horizontal cracks and exposed bars: When the concrete sleepers have cross-cutting of vertical and horizontal cracks and are accompanied by severe exposed bars, it indicates that their structure has been seriously damaged, which not only affects the appearance, but also endangers driving safety.

Therefore, the concrete sleepers should be checked regularly for the above phenomena, and the surface of the concrete sleepers should be protected in time, such as applying waterproof coating or using special protective agents; for the concrete sleepers that are seriously damaged and cannot be repaired, they should be replaced in time.