RailMac C70 4-Axle General-Purpose Open Wagon
The C70 general open wagon was developed in 2005 to satisfy the increasing railway goods transportation needs in China. The wagon has a loading capacity of 70t, its wagon body is welded by high-strength weather-resistant steels.
One pair of side open double doors and six upturned lower side doors are installed on the side walls of both sides of the C70 wagon body. A new type of locking structure is adopted for the double doors, and a full-length groove lockbox is set outside the lock rod, which not only prevents the lock rod from being bumped and deformed but also greatly improves the anti-expansion ability of the door panel. The lower door lock adopts an eccentric compression structure. When the upper door lock is closed, the handle can prevent the lower door lock from jumping out and avoid accidental door opening. The operation is simple, safe, and reliable.
The C70E open wagon is an upgrade version of the C70 wagon. Its end walls and side walls are increased by 100mm to expand the loading volume.
As part of SinoMac, RailMac provides full life‑cycle services for the C70 4-Axle General-Purpose Open Wagon, including design, system supply, installation, commissioning, after‑sales training, spare parts supply, troubleshooting and overhaul support, ensuring stable and efficient performance throughout its service life.
Advantages of C70 4-Axle General-Purpose Open Wagon
As a general-purpose open wagon, it transcends niche cargo limitations, seamlessly handling coal, minerals, construction aggregates, and even packaged goods. Its open-top design enables fast loading by heavy machinery, making it the go-to choice for diverse bulk cargo operations, thereby maximizing asset utilization for rail operators.
With a 70 t net loading capacity and a 77 m³ large volume, the C70 maximizes single-trip cargo throughput. The lightweight 23.8 t tare weight minimizes deadweight, delivering an excellent payload-to-weight ratio that reduces per-tonne transportation costs and lowers energy consumption per trip.
A maximum speed of 120 km/h under full load allows it to keep pace with high-priority freight schedules, shortening delivery cycles for time-sensitive bulk materials. The 145 m minimum curve radius ensures compatibility with both straight and curved track sections, supporting flexible deployment across extensive rail networks.
Built with a durable 23 t/axle load rating, the wagon withstands rigorous heavy-haul conditions while maintaining compliance with standard rail infrastructure requirements. Its robust construction is paired with efficient maintenance profiles to minimize downtime and ensure long-term, reliable service across its operational life.
Technical Specifications
Model | Loading Capacity | Gauge | Axle Load | Max Speed | Loading Volume |
| C70 4-Axle General-Purpose Open Wagon | 70 t | 1435 mm | 23 t/axle | 120 km/h | 77 m³ |
| C64K 4-Axle Standard Gauge Bogie Wagon | 61 t | 1435 mm | 21 t/axle | 120 km/h | 73.3 m³ |
| C70E 4-Axle Open Goods Wagon | 70 t | 1435 mm | 23 t/axle | 120 km/h | 80.8 m³ |
| C80B 4-Axle Open Wagon Specialized for Coal | 80 t | 1435 mm | 27 t/axle | 100 km/h | 92 m³ |
| C80E 4-Axle General Open Wagon | 80 t | 1435 mm | 27 t/axle | 100 km/h | 92 m³ |
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Main Parameters | |||
| OpenWgon Series | C70 Open Wagon | Bogie | 70 t |
| Wheel diameter | 840 mm | Bogie Type | K6/K5 |
| Coupler Center Height | 880 mm | Fixed Wheelbase | 1830 mm |
| Brake Type | Air brake | Maximum Operating Speed | 80 km/h |
| Railway Gauge | 1435 mm | Axle load | 23 t |
| Axis number | 4 | Coupler Type | 17# |
| Length | 13970 mm | Carriage Material | Q450N QR |
| Braking Ratio | 7.88 | Minimum Radius | 145 m |
| ——END—— | |||
Q1: Do you have the design capability to provide customized railway vehicles?
A: Yes, we have a professional technical team and are familiar with international railway standards such as UIC, AAR, EN, etc. We are able to provide railway equipment according to customer requirements.
Q2: The Chinese railway gauge is 1435 mm, but the railway gauge in our country is 1000 mm. Will this be a problem for you?
A: Of course not, we are able to design railway vehicles with different gauges, such as 1435 mm, 1000 mm, 1067 mm, 1520 mm or other required railway gauges.
Q3: Compared with your competitors, why should I choose you?
A: Tieke Railway was transformed from China Railway Freight Car Factory in 2016. The company has more than 10 years of experience in railway vehicle manufacturing; now, as Tieke Railway is a private company with modern market management strategies, our services are flexible, considerate, and the cost is more controllable.
Q4: What should I provide to get your quotation?
A: You can send an inquiry with detailed drawings, product photos, detailed technical parameters or demand description. Complete demand input is very important for us to provide you with an accurate quotation.
Note: All Above Data are Just for Reference, All Data Might Change Without Notices or Updates, Please Contact Our Sales Team to Confirm All Details Via WhatsApp or Email.

Engine Sale Manual

Installation Drawing

Installation Manual

Operation Manual

Parts Catalogue







