Section,Item,Vendor 1,Vendor 2,Vendor 3,Buyer Check,Red Flag
Basic Requirement,Crane capacity and reeving,,,,Confirm rope is selected for actual hoist reeving and load,Vendor quotes only rope diameter
Basic Requirement,Hoist duty and starts,,,,Rope life depends on duty and bending cycles,Duty not considered
Basic Requirement,Lift height and drum layers,,,,Check rope length and multilayer winding risk,Rope length not clearly stated
Rope Specification,Wire rope diameter,,,,Compare actual diameter and tolerance,Only nominal diameter mentioned
Rope Specification,Construction,,,,Examples: 6x36 / 6x37 / 8x19 / rotation resistant,Construction not declared
Rope Specification,Core type,,,,FC / IWRC / steel core depending on duty and crush resistance,Core type missing
Rope Specification,Tensile grade,,,,Common grades include 1770 / 1960 N/mm2,Grade not declared
Rope Specification,Lay direction and type,,,,Right/left regular/lang lay as per drum and reeving,Wrong lay can cause twisting
Rope Specification,Preformed / non-preformed,,,,Preformed ropes are easier to handle and inspect,Not specified
Rope Specification,Galvanized / ungalvanized,,,,Select based on corrosion exposure,Outdoor/corrosive site ignored
Safety,Minimum breaking force,,,,Compare against design load and safety factor,MBF not submitted
Safety,Safety factor,,,,Ask vendor to state basis and applicable standard,No safety factor declared
Compatibility,Drum diameter and D/d ratio,,,,Rope life depends heavily on bending radius,Small drum ignored
Compatibility,Sheave diameter and groove fit,,,,Groove must suit rope diameter and condition,Old worn sheaves reused without check
Compatibility,Rope fleet angle,,,,Important for winding and wear,Fleet angle not checked
Supply,Wire rope make and certificate,,,,Ask for manufacturer certificate and batch traceability,No test certificate
Supply,End termination,,,,Wedge socket / thimble / clamp / swaged fitting details,Termination not included
Supply,Rope lubrication,,,,Check lubrication type and maintenance recommendation,Dry rope supplied
Installation,Installation and pre-tensioning,,,,Bad installation damages new rope quickly,Vendor excludes installation method
Inspection,Baseline inspection,,,,Record new rope condition and diameter after installation,No commissioning record
Inspection,Discard criteria,,,,Broken wires corrosion kinks diameter reduction birdcaging,No discard guidance
Maintenance,Lubrication plan,,,,Define inspection and lubrication frequency,No maintenance plan
Maintenance,Spare rope recommendation,,,,Critical cranes may need spare rope on site,No spare recommendation
Commercial,Warranty and exclusions,,,,Clarify wear misuse installation and sheave condition exclusions,All rope wear excluded without guidance
Documentation,Datasheet and certificate,,,,Need construction grade MBF length batch certificate,Only invoice description provided