Product Details
1.PHOTOS
2. Main performance
Material | Polyamide Multifilament | Polyamide Yarn | Polypropylene Multifilament | Polypropylene | Polyester | Polypropylene and Polyester Mixed |
Spec.Density | 1.14 no floating | 1.14 not floating | 0.91 no floating | 0.91 Floating | 1.27 no floating | 0.95 Floating |
Melting Point | 215℃ | 215℃ | 165℃ | 165℃ | 260℃ | 165℃/260℃ |
Abrasion Resistance | Very Good | Very Good | Medium | Medium | Good | Good |
U.V.Resistance | Very Good | Very Good | Medium | Medium | Good | Good |
Temperature resistance | 120℃max | 120℃max | 70℃max | 70℃max | 120℃max | 80℃max |
Chemical resistance | Very Good | Very Good | Good | Good | Good | Good |
3.Technology Comparison
Coil length: 220m
Spliced strength:± 10% lower
Weight and length tolerance:± 5%
MBL=Minimum Breaking Load conform ISO 2307
Other sizes available upon request
4.Parameter Table
Specification 规格 | PA Multifilament 锦纶复丝 | PAYarn 锦纶 | PP Multifilament 丙纶长丝 | Polypropylene 丙纶 | Polyester 涤纶 | PET/PP Mixed 丙纶/涤纶混合绳 |
Dia. | Cir | Ktex | KN | Ktex | KN | Ktex | KN | Ktex | KN | Ktex | KN | Ktex | KN |
直径 | 圆 周 | 线密度 | 破断强力 | 线密度 | 破断强力 | 线密度 | 破断强力 | 线密度 | 破断强力 | 线密度 | 破断强力 | 线密度 | 破断强力 |
4 | 1/2 | 10 | 3.7 | 10 | 2.6 | 6.3 | 2.3 | 6 | 2.1 | 12 | 2.9 | 7.0 | 2.8 |
6 | 3/4 | 22 | 7.9 | 22 | 6 | 18 | 6.5 | 17 | 5.9 | 27 | 5.6 | 17.5 | 6.8 |
8 | 1 | 40 | 13.8 | 40 | 10.9 | 32 | 11.4 | 30 | 10.4 | 48 | 10.0 | 31 | 11.9 |
10 | 1-1/4 | 62 | 21.2 | 62 | 15.7 | 47 | 16.8 | 45 | 15.3 | 76 | 15.6 | 48.5 | 18.2 |
12 | 1-1/2 | 89 | 30.1 | 89 | 24.1 | 68 | 23.9 | 65 | 21.7 | 110 | 22.3 | 69.9 | 25.7 |
14 | 1-3/4 | 121 | 40.0 | 121 | 33.0 | 95 | 32.9 | 90 | 29.9 | 148 | 31.2 | 95.1 | 34.7 |
16 | 2 | 158 | 51.9 | 158 | 42.5 | 121 | 40.7 | 115 | 37.0 | 195 | 39.8 | 124 | 44.8 |
18 | 2-1/4 | 200 | 64.3 | 200 | 53.9 | 155 | 51.9 | 148 | 47.2 | 245 | 49.8 | 157 | 56.1 |
20 | 2-1/2 | 247 | 79.2 | 247 | 66.7 | 189 | 62.6 | 180 | 56.9 | 303 | 62.3 | 194 | 68.7 |
22 | 2-3/4 | 299 | 94.0 | 299 | 80.4 | 231 | 75.0 | 220 | 68.2 | 367 | 74.7 | 235 | 82.1 |
24 | 3 | 355 | 112 | 355 | 93.6 | 273 | 87.7 | 260 | 79.7 | 437 | 89.6 | 279 | 96.3 |
26 | 3-1/4 | 417 | 129 | 417 | 111.5 | 320 | 101 | 305 | 92.2 | 512 | 105 | 328 | 113 |
28 | 3-1/2 | 484 | 149 | 484 | 127 | 373 | 115 | 355 | 105 | 594 | 120 | 380 | 130 |
30 | 3-3/4 | 555 | 169 | 555 | 143 | 425 | 132 | 405 | 120 | 682 | 134 | 437 | 148 |
32 | 4 | 632 | 192 | 632 | 161 | 483 | 146 | 460 | 132 | 778 | 154 | 497 | 167 |
36 | 4 - 1/ 2 | 800 | 240 | 800 | 200 | 614 | 182 | 585 | 166 | 982 | 190 | 629 | 210 |
40 | 5 | 987 | 294 | 987 | 241 | 756 | 221 | 720 | 201 | 1215 | 235 | 776 | 257 |
44 | 5-1/2 | 1190 | 351 | 1190 | 289 | 924 | 266 | 880 | 242 | 1468 | 275 | 939 | 308 |
48 | 6 | 1420 | 412 | 1420 | 338 | 1092 | 308 | 1040 | 280 | 1750 | 329 | 1110 | 364 |
52 | 6-1/2 | 1670 | 479 | 1670 | 393 | 1281 | 357 | 1220 | 325 | 2050 | 384 | 1320 | 424 |
56 | 7 | 1930 | 550 | 1930 | 450 | 1491 | 408 | 1420 | 371 | 2380 | 439 | 1520 | 489 |
High-tenacity nylon filaments (typically nylon 6 or nylon 6,6) are
selected for their strength, elasticity, and outdoor
durability—critical for arborist rigging. The filaments are first
inspected to ensure consistent thickness and tensile performance.
They are then unwind from spools and grouped into "tows" (bundles
of filaments) based on the desired rope diameter and strength. The
orange colorant is integrated at this stage: either by adding
pigment to the nylon polymer before extrusion (for uniform,
fade-resistant color) or by applying a UV-stabilized orange coating
to the filaments to ensure high visibility—essential for arborists
working in dense foliage.
The prepared nylon tows are fed into a stranding machine to create
individual strands for both the inner core and outer cover of the double braid.
- For the core: Multiple nylon tows are twisted together in a
consistent direction (e.g., right-hand lay) to form strong,
flexible core strands. The number of core strands depends on the
rope’s load capacity—arborist rigging ropes typically use 8–12 core
strands for balanced strength.
- For the cover: Separate nylon tows (often with the same orange
colorant) are twisted into outer strands, with a slightly tighter
twist than the core to ensure a dense, abrasion-resistant surface.
The outer strand count is also calibrated (usually 12–16 strands)
to match the core’s diameter and create a uniform braid.
The core strands and cover strands are fed into a specialized
double braiding machine, which operates two braiding heads
simultaneously:
- The inner core is braided first, forming a tight, tubular structure
that serves as the rope’s primary load-bearing component.
- The outer cover is then braided over the inner core in the opposite direction (e.g., left-hand braid if
the core is right-hand braided). This counter-braiding creates
interlocking tension between the core and cover, eliminating
slippage and ensuring the rope maintains its shape under load. The
machine adjusts braiding speed and tension to achieve a smooth,
consistent "double braid" texture—neither too loose (which reduces
strength) nor too tight (which limits flexibility).
After braiding, the orange double braid rope is passed through a
heat-setting oven (at controlled temperatures, typically 120–160°C)
to stabilize its structure. This process:
- Eliminates residual tension from braiding, preventing the rope from
shrinking or deforming during outdoor use.
- Enhances the bond between the core and cover, improving abrasion
resistance.
- Locks in the orange color, reducing fading caused by UV exposure.
The heat also activates UV-inhibitors in the nylon (added during
fiber preparation) to boost long-term outdoor durability.
The rope is inspected for defects (e.g., uneven braiding, strand
breaks, color inconsistencies) using tension tests and visual
checks. It is then cut to standard lengths (common for arborist
use: 50m, 100m, 200m) using precision cutting tools. The ends are
finished with heat-sealing (melting the nylon strands slightly) or
reinforced with protective sleeves to prevent fraying. Finally, the
rope is coiled, labeled with specifications (e.g., diameter,
breaking strength), and packaged for shipping.
- Tree Climbing and Positioning: Used as a "climbing line" for arborists to ascend trees safely.
Its double braid structure balances flexibility (for easy
knot-tying, e.g., Blake’s hitch) and strength (to support the
arborist’s weight plus equipment). The orange color ensures high
visibility, helping ground crews track the climber’s movement in
thick branches or low light.
- Branch Rigging and Removal: Serves as a "rigging line" to lower heavy branches (up to the
rope’s breaking strength) during tree pruning or removal. The
nylon’s elasticity absorbs shock from sudden branch shifts,
preventing damage to the remaining tree or nearby structures. The
outer cover’s abrasion resistance protects the rope from rubbing
against rough bark or sharp branch edges.
- Tree Support and Guying: Used to stabilize young, leaning, or storm-damaged trees. The
rope is secured between the tree trunk and ground anchors, with its
double braid design ensuring it holds tension without stretching
excessively. The orange color makes the support system visible to
avoid accidental damage (e.g., from lawn equipment).
- Camping and Outdoor Gear Securement: Ideal for securing large camping gear (e.g., canvas tents, tarps,
or hanging food storage bags) in wooded areas. Its weather
resistance (from nylon and UV treatment) withstands rain, sun, and
humidity, while the double braid structure resists fraying from
contact with rocks or tree trunks.
- Adventure Park Installations: Used in controlled outdoor adventure parks for low-impact
elements (e.g., rope bridges, guided tree-top walks). The orange
color enhances visibility for safety, and the rope’s flexibility
allows it to be routed around trees or posts without compromising
strength. It is often paired with hardware (e.g., carabiners) for
secure connections.
- Utility Line Auxiliary Support: Used by utility workers as a "tag line" to guide lightweight
equipment (e.g., small tools, cable spools) when working near trees
or wooded areas. The rope’s visibility prevents it from being
mistaken for utility lines, and its strength ensures it can handle
the weight of tools without breaking.
- Landscaping and Horticulture: Used in commercial landscaping to move or secure large potted
trees or shrubs. The soft outer cover avoids scratching tree bark
or damaging foliage, while the core’s strength allows landscapers
to lift and position heavy plants safely.
Company Profile
Since its establishment in 2005, Qingdao Jincheng Maritime
Technology Co., Ltd. has been steadily advancing in the maritime
technology field for nearly two decades. The company focuses on the
core business of manufacturing marine supplies, always adhering to
the concepts of innovation and excellence, and is committed to
providing comprehensive and high-quality products and services to
the global maritime industry.
In terms of product manufacturing, the company has a rich and
diverse product line, covering marine navigation equipment, marine
safety protection supplies, marine interior decorations, and
various functional accessories for ships. From precise navigation
instruments to sturdy and durable life-saving equipment, from
comfortable and beautiful cabin interiors to efficient and
practical marine tools, every product undergoes strict quality
control to ensure compliance with international standards and
industry specifications.
The company attaches great importance to technological research and
development and innovation. It has formed a research and
development team composed of senior maritime engineers,
professional technicians, and innovative talents. The team
continuously explores cutting-edge technologies, actively
introduces new materials and processes, and continuously optimizes
product performance to meet the growing intelligent and green
demands of the maritime industry. At the same time, the company has
established long-term and stable cooperative relationships with
many well-known domestic and foreign universities and scientific
research institutions. Through the collaborative innovation of
industry, university, and research, it accelerates the
transformation of scientific research achievements and injects a
continuous stream of impetus into the company's development.
With reliable product quality, advanced technological level, and a
complete after-sales service system, Qingdao Jincheng Maritime
Technology Co., Ltd. has won a good reputation and wide recognition
in the industry. Its products not only sell well in major domestic
ports and shipbuilding enterprises but also are exported to many
countries and regions overseas. The company has established
long-term cooperative relationships with many internationally
renowned shipping companies. Looking to the future, the company
will continue to forge ahead, continuously enhance its core
competitiveness, and contribute to the advancement of maritime
technology and the development of the global shipping industry.