Sling we dɛn kin es kin gɛt wan patikyula kɔlɔ—bɔt da kɔlɔ de nɔto jɔs fɔ mek pɔsin fayn. Akɔdin to EN 1492-1 (flat wɛb sling) ɛn EN 1492-2 (raun sling), ɛni kɔlɔ kɔrɛkt to wan patikyula Wok Lod Limit (WLL) , we de mek dɛn ebul fɔ no di kapasiti kwik ɛn izi na di say we dɛn de du di wok .
Wan rawnd sling nɔ kin kam wit di de we dɛn kin dɔn stamp pan in lɛbl—bɔt dat nɔ min se i kin las sote go. Akɔdin to EN 1492-2, dɛn dɔn spɛsifa di Yuropian standad fɔ rawndsling, di wok lod limit (WLL) ɛn sefty factor, bɔt di savis layf dipen pan di aktual yus kɔndishɔn. Sɔm manifakta dɛn kin tɔk se di maksimam layfspan fɔ 10 ia frɔm di fɔs tɛm we dɛn yuz am ɔnda fayn kɔndishɔn.
Fɔ pik bitwin wan polyɛsta flat sling ɛn wan naylon flat sling nɔto tin fɔ se wan 'bɛtɛ' pas di ɔda wan—i dipen ɔl pan di aplikeshɔn ɛnvayrɔmɛnt. di tu mεtirial dεm de sheb di sem wok lod limit εn tεmprachכ rεnj (-40°C to 100°C) כnda EN 1492-1 , bכt dεn difrεn bכku pan εlongeshכn, kεmikכl rεsistεns, εn mכsichכ rεspכns. Naylon de strɛch 6–10% pan rayt lod ɛn i de rɛsist alkali bɔt i de pwɛl bay asid . poliεsta de strεch כnli 3–4% εn i de rεsist asid bכt i de pwεl bay alkali . Dis gayd de gi wan ditayl kɔmpiashɔn fɔ ɛp injinia ɛn riging pɔshɔnal dɛn fɔ pik di rayt flat sling matirial fɔ dɛn patikyula opareshɔn kɔndishɔn dɛn.
Fɔ no ustɛm fɔ riples flat slings impɔtant fɔ rigging sefty ɛn regulatory compliance. Di industri standad ASME B30.9 ɛn EN 1492-1 de difayn tu lɛvul fɔ inspekshɔn—frɛkuɛnt (de ɔ bifo yu yuz am) ɛn ɔltɛm (ɛvri ia ɔ sɛmi-ɛni ia)—ɛvri wan gɛt spɛshal krayteria fɔ no ustɛm dɛn fɔ pul sling na savis. Dis gayd de ɛksplen di difrɛns bitwin inspekshɔn we dɛn kin du ɔltɛm ɛn we dɛn kin du wan wan tɛm, i de gi ditayla chɛklist fɔ ɛni wan pan dɛn, ɛn i de sho di krayteria fɔ ritaia we kin mek pɔsin chenj sling. Fɔ rigging supavaysa, sefty manija, ɛn ɔpreshɔn, dis na prɛktikal rɛfrɛns fɔ mentɛn wan sef sling invɛntari.