QU120 Crane Rail 118.1kg/m YB/T 5055 Ultra Heavy Crane Runway Rail

Rail & Fittings, Steel Rail

QU120 Crane Rail 118.1kg/m YB/T 5055 Ultra Heavy Crane Runway Rail

QU120型钢轨（118.1kg/m起重机轨道钢轨） 是YB/T5055 QU系列起重机轨道钢轨中最重的型号，专为超重循环载荷而设计。广泛应用于港口集装箱门式起重机、重型冶金起重机和大型物流码头。U71Mn为标准供货等级；U75V、U75V HH和U76CrRE则适用于极端重载工况。

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Product Detail

Chemical Component

Key Technical Parameters

Parameter Item	Technical Data
Nominal Weight	118.1 kg/m
Rail Height	170.0 mm
Rail Head Width	120.0 mm
Rail Base Width	170.0 mm
Web Thickness	56.0 mm
Foot Thickness	35.0 mm
Standard	YB/T 5055
Available Steel Grades	U71Mn, U75V, U75V HH, U76CrRE
Standard Length	6m / 8m / 10m / 12m / Customized Cutting

Chemical Composition(YB/T 5055)

Grade	C (%)	Si (%)	Mn (%)	Alloy Element (%)	P (max)	S (max)
U71Mn	0.65–0.76	0.15–0.58	0.70–1.40	—	0.035	0.030
U75V	0.71–0.80	0.50–0.80	0.75–1.05	V 0.04–0.12	0.035	0.030
U76CrRE	0.72–0.82	0.40–0.70	0.75–1.05	Cr 0.20–0.40	0.035	0.030

Mechanical Properties(YB/T 5055)

Grade	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation A (%)	Hardness (HB)
U71Mn	≥880	≥520	≥10	260–310
U75V	≥980	≥580	≥9	280–330
U75V HH	≥1080	≥650	≥8	330–380
U76CrRE	≥980	≥590	≥9	290–340

Core Advantages

QU120 crane rail owns the maximum load capacity among QU series rails. Optional head hardening treatment greatly improves rail head hardness and wear resistance. It performs excellently under heavy impact and abrasive wheel wear. Third-party inspection and complete certification documents can be supplied for big port and metallurgy projects.

Application

Port container gantry cranes, large metallurgical heavy cranes, heavy load logistics terminals, bulk material yards, 24-hour continuous operation industrial sites.