30kg Mine Track
Product Overview
The 30 kg rail (nominal weight ≈ 30.1 kg/m), often called a 60 lb rail in imperial terminology, is a lightweight rail profile widely used in mining, industrial, and temporary track applications. It is supplied in standard lengths of 6–12 m and can be cut-to-length or customized with surface treatments, heat treatment, holes, or other machining on request.
Key Dimensions & Geometry
Rail height (H): 107.95 mm
Base width (B): 107.95 mm
Head width (b): 60.33 mm
Web thickness (t): 12.3 mm
Theoretical mass: ≈ 30.1 kg/m
Standard lengths: 6–24 m (custom lengths available)
Typical manufacturing tolerances should be agreed in the contract (common tolerance ≤ ±1 mm).
Materials & Chemical Composition
Available material options:
Q235B (standard carbon structural steel) — economical choice for general industrial use, temporary lines and light-duty outdoor tracks. Typical tensile strength: 375-460 MPa.
55Q (high-carbon mining wear-resistant steel) — recommended for high-wear, high-impact applications such as underground mine haulage or heavy-duty crane rails. Typical chemical composition (representative):
Carbon (C): 0.50–0.60%
Manganese (Mn): 0.60–0.90%
Phosphorus (P): ≤ 0.045%
Sulfur (S): ≤ 0.04%
Typical tensile strength: ≥ 685 MPa. After surface hardening or heat treatment, hardness can reach HB 260–300 (process-dependent).
Technical Specifications
| Parameter | Value | Notes |
|---|---|---|
| Model / Marking | 30 kg/m | Industry standard nominal weight |
| Cross-section dimensions | Height 107.95 mm (4.25 in); Base 107.95 mm (4.25 in); Head 60.33 mm (2.38 in); Web thickness 12.3 mm (0.48 in) | Matches typical light-rail accessory sizes; consistent with GB/T dimensional requirements |
| Material | Q235B carbon structural steel / 55Q high-carbon wear-resistant steel | Q235B: economical and versatile with good weldability; 55Q: superior wear resistance for mining/high-impact scenarios |
| Theoretical weight | 30.1 kg/m (~20.2 lb/ft) | Actual ±3% permitted (per GB/T standard) |
| Standard lengths | 6 m / 9 m / 12 m (custom up to 25 m) | Custom lengths available — please confirm at enquiry |
| Execution standard | GB/T 11264-2025 (Light Rail) | Updated national standard for light-rail products, integrating stricter quality requirements |
| Mechanical properties | Q235B: Yield ≥ 235 MPa; Tensile 375-460 MPa 55Q: Tensile ≥ 685 MPa | Suitable for medium-low load transportation (design speed ≤ 15 km/h; single-rail load ≤ 15 t) |
| Surface treatment | Natural rust/passivation; Optional anti-corrosion coating/galvanizing/induction hardening | Improves corrosion resistance in damp/dusty/mining environments; hardening enhances wear resistance |
Standards & Quality Control
Please specify the exact standards in purchase orders. Newer national standards (e.g., GB/T 11264-2025) may integrate and update earlier GB/T documents, tightening metallurgical, inclusion rating, and quality-control requirements.
Factory inspection typically includes chemical analysis, tensile tests, hardness tests, ultrasonic or magnetic-particle flaw detection, and dimensional checks (typical dimensional tolerance ≤ ±1 mm).
Available certifications: ISO 9001, ISO 14001 (depending on supplier), and assistance with CE / EN 13674-4 compatibility testing for EU export.
Typical Applications & Material Recommendations
Underground main haulage (mining): For high-production mines (e.g., >300,000 t/year) and high-frequency, high-impact service lines, 55Q is recommended for its superior wear resistance. Compatible with common mine switches (e.g., DK630 series) and typically bedded on 20–40 mm graded ballast compacted to ≥96%.
Mine branch lines and personnel lines: 55Q or Q235B depending on wear and budget. Lightweight 30 kg rails are well-suited to confined tunnels (tunnel widths ≤ 3 m) and can be manually handled for rapid installation.
Open-pit temporary connector lines: Q235B is commonly used for short-life or moveable tracks between pit and crusher where economy and reusability are priorities.
Factory material-handling lines: Q235B suits internal transfer paths (e.g., stamping part transfer, cement clinker conveyors) supporting 0.5–2 t electric trolleys; often mounted on concrete sleepers (e.g., 762 mm gauge examples).
Crane rails (10–15 t range): Install on C30 concrete strip foundations (300×400 mm). Use bolted fixation with leveling shims (shim spacing ≤ 0.5 m); joint gap ≤ 2 mm; runout tolerance ≤ 2 mm per 10 m. For high-wear crane service consider 55Q or a heavier rail section.
Special guide rails (shipways, sluice gates): Where corrosion and precision matter, apply quenching or use corrosion-resistant fasteners; surface hardness target HB ≥ 300 may be specified for sliding applications.
Installation
Underground sub-base: Minimum C20 concrete slab, thickness ≥ 150 mm. Ballast: 20–40 mm graded stone, thickness ≥ 100 mm.
Sleeper spacing: Concrete sleepers typically 700 mm; timber sleepers typically 600 mm (adjust to design).
Bolt torque: Typical fishplate/bolt torque reference 350 N·m (follow fastener manufacturer recommendations).
Rail welding: Thermit welding (exothermic) is recommended for in-field splicing. Follow proper preheat/post-heat and finish by dressing welds flush with the railhead; perform post-weld inspection.
Joints & alignment: Joint gap ≤ 2 mm; crane track horizontal deviation ≤ 2 mm per 10 m.
Maintenance Schedule
Daily/Monthly: Remove debris and foreign material monthly; inspect for loose fasteners and obvious damage.
Quarterly: Measure gauge and alignment deviations (allowable gauge variation ±2 mm); lubricate fishplate bolts/fasteners quarterly.
Annual: Clean and re-screen ballast to below sleeper bottom (~50 mm below sleeper underside).
Replacement life estimate: Q235B: approx. 5–8 years under typical use; 55Q: up to 10+ years with correct maintenance. Actual life depends on load cycles, speeds, and maintenance practices.
Supervision Loading Photos
30kg Light Rail: Professional Packaging & Secure Shipment
Procurement & Pricing Notes
Quotation factors: material grade (Q235B vs 55Q), rail length and quantity, surface treatment (galvanizing / anti-rust coating / hardening), special machining (holes, chamfers), packing and delivery, third-party inspection requirements.
Custom treatments / special orders: Hardening, wear coatings, or extra-long rails typically add ~10–20% to the base price (subject to process and order quantity).
Delivery lead time varies with stock and order specifics; please provide exact requirements for an accurate lead-time estimate.
Warranty & After-Sales
Factory test certificates (chemical, mechanical, NDT, dimensional) are provided with each shipment. Third-party inspection can be arranged.
Some suppliers offer up to 5 years limited warranty against manufacturing defects (excluding damage from misuse, improper installation or abnormal service). Contract terms vary—please confirm in purchase agreement.