Flat sling we jɔs tu shɔt fɔ sɔm fit kin mek di wok we dɛn de du fɔ es di es go stɔp. Di tin we yu tink bɔt wantɛm wantɛm: wetin mek yu nɔ jɔs jɔyn tu sling dɛn togɛda? Di prɔsis fɔ kɔnɛkt sling na kɔmɔn tin, bɔt akɔdin to OSHA 1910.184(c)(2) ɛn ASME B30.9, sling nɔ fɔ shɔt ɔ lɔng bay we dɛn knot ɔ twist, ɔ jɔyn bay we dɛn knot .

Di 1/10 rul na wan stret bɔt impɔtant ritayayeshɔn krayteria fɔ flat sling: we abrasive wear ridyus di webbing width bay 1/10 ɔ mɔ, di sling fɔ kɔmɔt na savis. Dis rul de spɛsifa insay EN 1492-1 ɛn ASME B30.9 no am as di men indikɛtɔ fɔ wɛr pasmak. Dis gayd de ɛksplen wetin di 1/10 lɔ min, aw fɔ mɛzhɔ di wɛb wit kɔrɛkt wan, wetin mek dɛn pik dis trɛshɔld, ɛn aw fɔ yuz am we dɛn de du inspekshɔn ɛvride. Fɔ di wan dɛn we de oba di rig ɛn di wan dɛn we sabi bɔt sefty, if dɛn ɔndastand dis simpul lɔ, dat kin mek dɛn nɔ yuz sling dɛn we dɛn dɔn wɛr we denja.

Flat sling nɔ jɔs de es lod—i de protɛkt am. Di wayd, flat wɛb sɔfays de sheb di lod in wet oba wan big eria, we de ridyus di prɛshɔn bad bad wan na ɛni wan pɔynt. Dis na di fawndeshɔnal fizik prinsipul biɛn flat sling: Prɛshɔn = Fɔs ÷ Ɛria. We dɛn de mek di say we dɛn kin kɔntakt mɔ, dɛn kin mek di flat sling dɛn nɔ pwɛl di say we dɛn de, dɛn kin dent, ɛn krɔs—we kin mek dɛn lɛk fɔ es di tin dɛn we dilik, we dɔn dɔn, ɔ we kin pwɛl izi wan. Dis gayd de ɛksplen di fizik fɔ prɛshɔn distribyushɔn, kɔmpia flat sling to ɔda liftin sɔlvishɔn, ɛn gi prɛktikal gayd fɔ pik di rayt sling wit fɔ yu aplikeshɔn.

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.