8×25Fi Steel Wire Rope

Product Overview

This design enhances load distribution, reduces wear, and boosts overall durability. Available with FC (Fiber Core) and IWRC (Independent Wire Rope Core) options, the 8×25Fi steel wire rope meets the GB/T20118-2017 standard, making it suitable for both aerial work (e.g., aerial work platforms) and heavy-duty hoisting. Whether for high-rise construction or industrial lifting, this rope delivers consistent performance in demanding environments.

Product Features

Fi Strand Design for Enhanced Stability

The Fi (Filler Wire) structure sets the 8×25Fi steel wire rope apart: filler wires fill gaps between main strands, creating a compact, round cross-section. This design improves load distribution—ensuring weight is evenly spread across all wires—and reduces friction between strands. The result is a rope that’s more stable during lifting, less prone to strand damage, and longer-lasting than traditional non-filled rope designs.

Strong Load-Bearing Capacity

The combination of 25 main wires per strand and Fi (Filler Wire) boosts the rope’s load-bearing efficiency. The filler wires add extra contact points, allowing the rope to handle heavier loads without stretching or breaking. This makes the 8×25Fi steel wire rope ideal for tasks like lifting heavy machinery, aerial work platforms, or large infrastructure components—where consistent load support is critical.

Versatile Core Options for Targeted Use Cases

FC (Fiber Core): Offers exceptional flexibility, making it perfect for aerial work platforms and window cleaning machines. Its lightweight design allows the rope to move smoothly with the platform, ensuring safe, precise positioning for workers at height.

IWRC (Independent Wire Rope Core): Adds ruggedness and shock load resistance, suiting heavy-duty hoisting in industrial settings. It’s ideal for dragging equipment, lifting large cargo, or any application where sudden impacts are possible.

High-Strength & Anti-Relaxation Performance

Crafted from high-quality 72# high-speed steel wire rod (a premium steel grade), the 8×25Fi steel wire rope delivers excellent tensile strength and anti-relaxation properties. It maintains its tension over time, even with repeated use, reducing the need for frequent adjustments. Additionally, its tight diameter tolerance ensures compatibility with standard pulleys and drums, minimizing equipment wear and ensuring smooth operation.

Optional Hot-Dip Galvanization for Corrosion Protection

For outdoor or humid environments, the 8×25Fi steel wire rope can be treated with hot-dip galvanization—a process that coats the wire with a layer of zinc. This coating resists rust, saltwater damage, and chemical exposure, making the rope suitable for coastal ports, outdoor construction, or any application where corrosion is a concern.

Nominal Dlameter (mm)	Approx Weight(kg/100m)				Nominal Tensile Strength(MPa)
					1570		1670		1770		1870		1960		2160
					Minimum Breaking Strength(kn)
	NF	SF		IWR iws	FC	IWR iwS	FC	IWR iws	FC	IWR iwS	FC	IWR iws	FC	IWR IWS	FC	IWR iwS
14	70.0	67.4		85.3	90.2	106	95.9	113	102	120	107	127	113	133	124	146
16	91.4	68.1		111	118	139	125	148	133	157	140	166	147	174	162	191
18	116	111		141	149	176	159	187	168	198	178	210	186	220	205	242
20	143	138		174	184	217	196	231	207	245	219	259	230	271	253	299
22	173	166		211	223	263	237	280	251	296	265	313	278	328	306	362
24	206	198		251	265	313	282	333	299	353	316	373	331	391	365	430
26	241	233		294	311	367	331	391	351	414	370	437	388	458	428	505
28	280	270		341	361	426	384	453	407	480	430	507	450	532	496	586
30	321	310		392	414	489	440	520	467	551	493	582	517	610	570	673
32	366	352		445	471	556	501	592	531	627	561	663	588	694	648	765
34	413	398		503	532	628	566	668	600	708	633	748	664	784	732	864
36	463	446		564	596	704	634	749	672	794	710	839	744	879	820	969
38	516	497		628	664	784	707	834	749	884	791	934	829	979	914	1080
40	571	550		696	736	869	783	925	830	980	877	1040	919	1090	1010	1230
42	630	607		767	811	958	863	1020	915	1080	967	1140	1010	1200	1120	1320

● Standard: GB/T20118-2017

● For various equipment of lfting, hoisting and dragging, the rope with steel core may be used under the shock load.

Applications

Aerial Work Platforms & Hanging Baskets

The 8×25Fi steel wire rope is a top choice for engineering hanging baskets and window cleaning machines. Its FC core’s flexibility allows the rope to bend easily around the platform’s pulleys, ensuring smooth, stable movement for workers. The Fi structure’s stability prevents rope twisting—critical for safety when working at height—and its anti-relaxation performance maintains tension, reducing the risk of sudden drops. This makes it ideal for high-rise building maintenance, window cleaning, or construction tasks like facade installation.

Heavy-Duty Hoisting & Dragging

Industrial settings rely on the 8×25Fi steel wire rope (with IWRC core) for hoisting heavy machinery, dragging large components, or loading cargo. Its strong load-bearing capacity handles weights like excavators or steel coils, while the IWRC core’s shock load resistance absorbs sudden forces from shifting loads. The rope’s durability also stands up to the rough conditions of factories, warehouses, or construction yards.

Bridge & Infrastructure Construction

For bridge building and high-speed rail projects, the 8×25Fi steel wire rope supports tasks like lifting bridge girders or securing tunnel segments. Its Fi structure’s stability ensures even load distribution—critical for irregularly shaped loads—and its tight diameter tolerance ensures compatibility with construction cranes. The rope’s corrosion resistance (with galvanization) also makes it suitable for outdoor infrastructure projects, where exposure to weather is unavoidable.

Precision Lifting Equipment

Manual chain blocks and small hoists use the 8×25Fi steel wire rope for precision tasks, such as lifting tools or small machinery in workshops. Its anti-relaxation performance maintains precise positioning, while its flexibility allows the rope to work with compact hoisting systems. The FC core’s lightweight design also reduces strain on the hoist, extending the equipment’s life.

FAQ

What makes the Fi structure in 8×25Fi steel wire rope unique?

The Fi (Filler Wire) fills gaps between main strands, creating a tighter, more uniform rope. This design improves load distribution, reduces friction between strands, and prevents twisting—making the rope more stable and durable than non-filled ropes. It’s especially valuable for aerial work or precision lifting, where stability is critical.

Which core type is better for aerial work platforms: FC or IWRC?

The FC (Fiber Core) is better for aerial work platforms. It offers superior flexibility, allowing the rope to bend smoothly around the platform’s pulleys, and its lightweight design reduces strain on the platform’s system. The IWRC core is too rigid for aerial work and is better suited for heavy-duty hoisting.

Does 8×25Fi steel wire rope offer corrosion protection?

Yes—with optional hot-dip galvanization. This zinc coating resists rust, saltwater, and chemicals, making the rope suitable for outdoor, coastal, or humid environments. Even without galvanization, the rope’s high-grade steel offers basic corrosion resistance for indoor use.

Can 8×25Fi steel wire rope be used with manual chain blocks?

Absolutely. Its tight diameter tolerance and anti-relaxation performance make it compatible with manual chain blocks and small hoists. The FC core’s flexibility works well with compact lifting systems, ensuring precise, smooth operation for light to medium loads.