QU80 Crane Rail 63.7kg/m YB/T 5055 Crane Rail for Overhead Crane

Rail & Fittings, Steel Rail

QU80 Crane Rail 63.7kg/m YB/T 5055 Crane Rail for Overhead Crane

QU80 rail (63.7kg/m crane runway rail) is a medium-load crane rail under Chinese standard YB/T 5055, widely adopted in global industrial crane projects. With optimized cross-section profile, stable structural performance, outstanding wear resistance and cyclic load endurance, QU80 rail serves as the standard runway rail for medium-capacity overhead and gantry cranes. U71Mn is the default supply grade, and 50Mn can be supplied as economical alternative.

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Product Detail

Chemical Component

Key Technical Parameters

Parameter Item	Technical Data
Nominal Weight	63.7 kg/m
Rail Height	130.0 mm
Rail Head Width	80.0 mm
Rail Base Width	130.0 mm
Web Thickness	44.0 mm
Foot Thickness	26.0 mm
Standard	YB/T 5055
Available Steel Grades	U71Mn, 50Mn
Standard Length	6m / 8m / 10m / 12m / Customized Cutting

Chemical Composition(YB/T 5055)

Grade	C (%)	Si (%)	Mn (%)	P (max)	S (max)
U71Mn	0.65–0.76	0.15–0.58	0.70–1.40	0.035	0.030
50Mn	0.48–0.56	0.17–0.37	0.70–1.00	0.035	0.035

Mechanical Properties(YB/T 5055)

Grade	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation A (%)	Hardness (HB)
U71Mn	≥880	≥520	≥10	260–310
50Mn	≥735	≥390	≥12	220–260

Core Advantages

QU80 crane rail is hot rolled with tight dimensional tolerance, ensuring smooth wheel travelling and minimizing wheel wear. It maintains stable performance under medium cyclic impact load from continuous crane operation. Strict non-destructive inspection can be arranged as requested. Complete export documentation including MTC is available for overseas projects.