Lifting sling chu rawng bik a awm a—mahse, chu rawng chu aesthetics atan chauh a ni lo. EN 1492-1 (flat webbing slings) leh EN 1492-2 (round slings) ang chuan, rawng tin hi Working Load Limit (WLL) bik nen a inmil a, chu chuan hnathawhna hmuna capacity hriat theihna rang leh awlsam tak a siam thei a ni.
Sling zungbun chu a label-ah expiry date stamp-in a lo thleng lo—mahse, chu chuan chatuan atan a daih tihna a ni lo. EN 1492-2 ang chuan European standard for roundslings, working load limit (WLL) leh safety factor te chu tarlan a ni a, mahse service life chu hman dan tak takah a innghat thung. Manufacturer thenkhat chuan ideal condition hnuaiah hman hmasak ber atanga kum 10 chhung dam rei theihna tur an tarlang.
Polyester flat sling leh nylon flat sling thlan chu pakhat chu a dang aiin 'tha zawk' tihna a ni lo—a hman danah a innghat vek a ni. Material pahnih hian EN 1492-1 hnuaiah hian working load limit leh temperature range (-40°C to 100°C) inang an nei a, mahse elongation, chemical resistance, leh moisture response lamah erawh an danglam hle thung. Nylon hian rated load-ah 6–10% a sei a, alkali a do thei a, mahse acid-in a tichhia a ni . Polyester hian 3–4% chauh a sei a, acids a dodal a, mahse alkalis te hian a tichhia a ni. He guide hian engineer leh rigging professional-te chu an hnathawh dan bik atana flat sling material dik tak thlan theihna turin chipchiar taka tehkhin thu a pe a ni.
Flat sling thlak hun hriat hi rigging safety leh regulatory compliance atan a pawimawh hle. Industry standard ASME B30.9 leh EN 1492-1 chuan inspection level pahnih—frequent (nitin emaw pre-use) leh periodic (kum tin emaw semi-annual)—chuan sling service atanga lakchhuah hun tur hriat theihna tur criteria bik a nei vek a ni. He kaihhruaina hian enfiah fo leh hunbi neia enfiah thin inthlauhna a sawifiah a, pakhat zel tan checklist chipchiar tak a pe a, sling thlak danglamna thlentu retirement criteria a tarlang bawk. Rigging supervisor, safety manager, leh operator te tan chuan hei hi sling inventory him tak vawn thatna atana hmanraw tangkai tak a ni.