GNEE RAIL Export of JIS CR73 Crane Rail to Vietnam
GNEE RAIL recently completed the production, inspection, export packaging, and sea shipment of JIS CR73 crane rails for an industrial port and manufacturing project in Vietnam. The shipment was transported by sea for a heavy-duty crane runway system designed to support frequent crane operations and high wheel loads.
The Vietnamese contractor required a crane rail profile with a wide contact surface and high load-bearing capacity. Because conventional railway rails were not suitable for this application, the project specified JIS-standard CR73 crane rails to provide improved load distribution, reduced rail head stress, and reliable long-term performance under heavy industrial operating conditions.
- Product: JIS CR73 Crane Rail
- Transport Mode: By Sea (LCL, 40HQ Container)
- Port of Loading: Shanghai Port
- Port of Departure: Xingang, China
- Port of Discharge: Haiphong, Vietnam
- HS Code: 7302.10
Packing and Shipping of CR73 Rail
B/L - Crane rail CR73
Our logistics team can provide preliminary sea freight estimates, container loading recommendations, and shipping options based on your destination port.
CR73 Rail Profile and Key Dimensions
The JIS CR73 rail is a heavy-duty crane rail specifically designed for industrial runway systems rather than conventional railway tracks. Its wide head, thick web, and low center of gravity help distribute vertical and lateral wheel loads more evenly, reducing localized stress on both the rail and its supporting structure.
Unlike standard transport rails manufactured to JIS E 1101, CR73 crane rails are produced in accordance with JIS E 1103, the Japanese standard dedicated to crane rail profiles. During production, GNEE RAIL verified all critical dimensions and profile tolerances before shipment to ensure full compliance with the project specifications.
The table below summarizes the key dimensions of the exported CR73 rail batch.
| Product Name | JIS E STANDARD STEEL RAIL | ||||||
| Standard | JIS E1103-91/ JISE1101-93 | ||||||
| Model | DIMENSION | Weight | Material | Length | |||
| A(mm) | B(mm) | C(mm) | t(mm) | (KG/M) | (m/PC) | ||
| JIS 15KG | 42.86 | 79.37 | 79.37 | 8.33 | 15.2 | 55Q | 9-10m |
| JIS 22KG | 50.8 | 93.66 | 93.66 | 10.72 | 22.3 | 55Q | 9-10m |
| JIS 30A | 60.33 | 107.95 | 107.95 | 12.3 | 30.1 | 55Q | 9-10m |
| JIS 37A | 62.71 | 122.24 | 122.24 | 13.49 | 37.2 | U71Mn | 10-25m |
| JIS 50N | 65 | 153 | 127 | 15 | 50.4 | U71Mn | 10-25m |
| CR 73 | 100 | 135 | 140 | 32 | 73.3 | U71Mn | 10-12m |
| CR 100 | 120 | 150 | 155 | 39 | 100.2 | U71Mn | 10-12m |
One of the defining features of the JIS CR73 crane rail is its 32.00 mm web thickness, which is significantly greater than that of conventional railway rail sections. This reinforced web design provides higher resistance to lateral forces, improves structural stability, and helps withstand the repeated wheel loads generated by heavy-duty crane operations.
Our engineering team can provide dimensional tolerances, material specifications, inspection reports, and additional technical documentation for your project upon request.
GNEE RAIL CR73 Quality Verification & Mill Test Certificate (MTC)
For this Vietnam project, GNEE RAIL supplied JIS CR73 crane rails manufactured from high-strength U71Mn steel and produced under strict quality control procedures.
| Mechanical Property | Chemical Composition (%) | |||||||||||||
| U71Mn | Yield strength | Tensile strength | Elongation | Hardness | C | Si | Mn | S | P | Cr | Ni | Cu | ||
| MPa | kg/mm² | MPa | kg/mm² | min | HBW | |||||||||
| ≥390 | ≥40 | ≥880 | 9% | 0.65-0.76 | 0.15-0.35 | 1.10-1.40 | ≤0.030 | ≤0.030 | ≤0.250 | ≤0.250 | ≤0.250 | |||
| Element | Carbon (C) | Silicon (Si) | Manganese (Mn) | Phosphorus (P) | Sulfur (S) |
|---|---|---|---|---|---|
| Verified MTC Value | 0.72% | 0.29% | 1.16% | 0.020% | 0.015% |
Mechanical Properties & Physical Quality
- Tensile Strength (Rm): 980 MPa – Provides high strength and fatigue resistance for heavy-duty crane rail applications.
- Elongation (A): 10% – Ensures sufficient ductility to accommodate dynamic loading and impact.
- Surface Hardness: 275 HB – Improves wear resistance and extends service life under repeated crane wheel contact.
- Surface & Dimensional Quality: All rails passed surface quality and dimensional inspections with 100% compliant (Qualified) results, confirming freedom from rolling defects and unacceptable dimensional deviations.
Request a sample MTC to review the full chemical composition, mechanical properties, heat number, and quality inspection records for GNEE RAIL's CR73 crane rails.
Quality Assurance and Pre-Shipment Inspection
Before shipment, every CR73 rail underwent a comprehensive quality inspection program to verify compliance with project specifications and JIS E 1103 requirements. The inspection process included:
- Dimensional Verification: Rail height, head width, base width, web thickness, and straightness were measured using calibrated inspection equipment.
- Ultrasonic Testing (UT): 100% ultrasonic inspection was performed to detect internal defects such as cracks, shrinkage cavities, and inclusions.
- Surface Inspection: Visual inspection and magnetic particle testing (MT) verified that the rail surface was free from cracks, seams, and other visible defects before shipment.
Sample UT reports, dimensional inspection records, and quality documentation are available upon request.
Frequently Asked Questions (FAQ)
Q1: Which standard does the CR73 crane rail comply with?
GNEE RAIL manufactures CR73 crane rails in accordance with JIS E 1103, the Japanese standard for heavy-duty crane rails.
Q2: What is the difference between CR73 and CR100 crane rails?
CR100 features a larger profile and higher load capacity than CR73. The appropriate rail section depends on crane wheel loads, operating conditions, and project requirements.
Q3: Can GNEE RAIL provide custom machining services?
Yes. We can supply CR73 crane rails with customized cutting, drilling, and other machining services according to customer drawings.
Q4: How are CR73 rails protected during international shipment?
Each rail is treated with a temporary anti-rust coating and securely bundled with steel strapping and timber spacers to minimize corrosion and handling damage during sea transportation.
