Striebig Standard Ll Plus 6220 nakup rabljenega (27.096)

Stanje: dober (rabljeno), Hydraulic cylinder, support cylinder, hydraulic ram, pressure ram -Cylinder: Ø 63 mm Bodpjfrzq Dsfx Altedf -Piston rod: Ø 32 mm -Tube: outer Ø ___ mm -Stroke: 170 mm -Overall length retracted: 405 mm -Mounting: borehole Ø 30 mm -Ideal for building a hydraulic press -Price: per piece -Quantity: 3 pieces -Dimensions: 405/110/H100 mm -Weight: 9.3 kg/piece

Stanje: dober (rabljeno), Hidravlični cilinder, podporni cilinder, hidravlični bat, tlačni bat, nagibni cilinder, dvižni cilinder Bodpfx Alsvt Sgkotsdf -Proizvajalec: GSL (German Standard Lift), hidravlični cilinder s hodom 480 mm -Tip: E030ZM2 R 16 -Batnica: Ø 30 mm -Priključek: Ø 24 mm -Mere: 545/82/H60 mm -Teža: 6 kg

Stanje: dober (rabljeno), Hydraulic cylinders, support cylinders, hydraulic rams, pressure rams, tipping cylinders, lifting cylinders - Manufacturer: GSL (German Standard Lift), hydraulic cylinder stroke 480 mm - Type: E030ZM50479 S 49 - Piston rod: Ø 30 mm - Mounting: Ø 20 mm - Quantity: 3 cylinders available Bodpfjvt Siljx Altjdf - Price: per unit - Dimensions: 605/100/H80 mm - Weight: 6.8 kg/unit

Stanje: rabljeno, ZETA PLUS Filter Vessel Model: 12 ZPC 2 Material: 316 L Bdodpfx Asb Tfw Nsltef Max. operating pressure: 5 bar Temperature: 90°C Weight: 110 kg

Stanje: zelo dobro (rabljeno), Višina reza: 220 cm. Dolžina reza: 550 cm. Moč motorja: 4,4/5,5 kW. Celotne dimenzije: višina 290 cm, širina 160 cm, dolžina 600 cm. Bsdpozi Dplsfx Altsdf

Stanje: dober (rabljeno), Safety mesh for work platforms, cherry pickers, scissor lifts, aerial work platforms, lifting platforms, personnel lifts; safety mesh, wire mesh, safety roll mesh - Safety mesh: wire mesh, suitable for scissor lifts or other applications - Wire thickness: 1.5 mm - 4 rolls: width 2.55 m (approx. 15 m length) - Price per roll: 520 EUR net - 2 rolls: width 2.01 m (approx. 15 m length) - Price per roll: 480 EUR net - Overall dimensions: 2850/720/H660 mm - Total weight: 450 kg Bedpfx Aog Dc Hleltjdf

Stanje: zelo dobro (rabljeno), Leto izdelave: 2021, Funkcionalnost: popolnoma funkcionalen, moč: 5,5 kW (7,48 KM), vhodna napetost: 400 V, vhodna frekvenca: 50 Hz, vrsta vhodnega toka: trifazni, največja višina reza: 2.240 mm, največja širina rezanja: 4.300 mm, premer žaginega lista: 300 mm, izvrtina žagine plošče: 30 mm, Ponujamo vertikalno ploščasto žago Striebig CONTROL 18 5224, letnik 2021, v zelo dobrem stanju. Poročilo o oceni najdete v prilogi. Tip: 5224 Dolžina reza: 4.300 mm Navpična višina reza: 2.240 mm Vodoravna višina reza: 2.100 mm Največja debelina materiala: 80 mm Nazivna napetost: 400 V Frekvenca: 50 Hz Hitrost pomika: 10–25 m/min Standardna oprema: - Enodelen jeklen okvir - Kotalne ležajne valje s samodejno zavoro - V okvir integrirano odsesavanje prahu - Samodejno zaznavanje sredinske podpore - Uporabniku prijazno upravljanje za visoko udobje pri uporabi - Vodoravna laserska projekcija linije reza - 12" zaslon na dotik za upravljanje - Optimalna površina za podporo po celotnem območju reza - Samodejno nagibna jekleno-lesena podporna miza - V okvir integrirana podpora za majhne formate - Žagin list s trdim kovinskim nastavkom Ø 300/30 mm - Zvočno izolirano ohišje žage - Pogonski motor 5,5 kW (delovni način S6) - Elektromagnetna zavora motorja - Samodejna blokada prečk Bsdpsy N Sf Refx Altodf - Natančno pozicioniranje žagine enote s pritiskom na gumb - Samodejna blokada žagine enote - Samodejna funkcija potopa žage - Samodejno vrtenje žagine enote - Števec obratovalnih ur - Digitalni merilni sistem DMS v vodoravni in navpični smeri (os X in Y) - Paket Expert-Cut - Elektronska nastavitev mer na osi X - Samodejno pozicioniranje prečk in žagine enote - 12" upravljalski zaslon - Striebig programska oprema za optimizacijo reza - Tiskalnik etiket - Možnost povezave z omrežjem podjetja V sklopu dobave je tudi odsesovalna naprava KOGI z motorjem 2,2 kW in sesalno močjo 1.650 Pa. Za vsa vprašanja ali dodatne informacije smo vam z veseljem na voljo po elektronski pošti ali telefonu.

Stanje: novo, premer žaginega lista: 303 mm, dolžina rezanja (maks.): 5.300 mm, globina reza: 80 mm, premer ekstrakcijske šobe: 140 mm, Oprema: dozator, Striebig Control18 6224 Cutting Area: 6224 L: 5300 x H_vert: 2240 / H_hor: 2100 x D: 80 mm Saw Frame • Machine components manufactured to a 0.01 mm precision • Heavy-duty, self-supporting, solid-welded, torsion-resistant saw frame • TRK1 full-surface support wall made of birch plywood with integrated small parts support • Auxiliary stop profile with dedicated measuring tape and 3 auxiliary stops for repeat cuts • Automatic detection of intermediate support • Automatic roller locking during sawing Saw Beam • Stable, long-life steel construction for the saw beam • Automatic saw beam locking with cut position detection Saw Unit • Play-free, smooth-running guides • Robust carriage bearings ensure high cut precision • Powerful, high-torque 5.5 kW motor (7.5 HP) • Enhanced convenience thanks to a largely automated operation • Laser-assisted display of horizontal cuts • Automatic carriage clamping • Automatic plunging and swiveling of the saw motor • Pneumatic clutch for easy switching to manual operation • SUPERSILENT sound insulation to reduce blade noise • Electromagnetic motor brake • ProLock Easy-Fix tool clamping system Control • 12" touchscreen computer with intuitive operator guidance • Multilingual user interface • Tool database ensures maximum flexibility and repeat accuracy Bodpju Nhbyofx Altsdf • Fully automatic sawing process • Stepless feed speed selection from 10–25 m/min • Selectable saw cycle • Panel end detection • Constant return speed • Operating hours counter • Network connectivity • 24VDC UPS for touch PC (uninterruptible power supply) • Automatic saw beam positioning (ASP) Measurement Setting • Digital Measuring System DMS.x (horizontal axis for vertical cuts) • Electronic Positioning System EPS.y incl. ABO (vertical axis for horizontal cuts) Design, Ergonomics • Signature STRIEBIG product design • Multiple awards (including Design Prize Switzerland) • Functional and ergonomically optimized for operators Installation • Wall-mounted or free-standing installation possible - Scoring Saw Unit VSA (infinitely adjustable scorer) - Paper holder - Complete aluminium small-parts support (2-part) - Striebig cutting optimization STRIEBIG ExpertCut CON

Stanje: novo, Funkcionalnost: popolnoma funkcionalen, skupna višina: 938 mm, skupna dolžina: 2.000 mm, skupna širina: 1.100 mm, skupna masa: 100 kg, Oprema: CE označba, Na voljo je tipska ploščica, dokumentacija / priročnik, ISI-FLOW DESK Standard – 1000S – 1700 m³/h Odsesovalna miza, miza za lepljenje, brušenje, poliranje, varjenje ali ročno rezanje Odsesovalna miza ISI Flow Desk 1000 S je standardna delovna miza za odsesavanje neeksplozivnega, suhega prahu in plinov. TEHNIČNI OPIS: Možna odsesovalna zmogljivost: 1700 m³/h Delovna površina (Š/G v mm): Š 980 / G 960 Delovna višina v mm: V 638-938 mm Nosilnost mize: 150 kg/m (les, pri enakomerno porazdeljeni obremenitvi) Delovna površina: lesene letve (opcijsko jeklo, nerjavno jeklo ali plastične rešetke) Skupne mere (Š/G/V v mm): Š 1076 / G 1000 / V 938 (opcijsko so možne druge dolžine in globine) Ventilatorska moč: brez ventilatorja Priključek za cev: D = 161 mm Barva: RAL 7042/RAL 7011 Teža: 100 kg Področje uporabe: Miza se uporablja za odsesavanje neeksplozivnega, suhega prahu in plinov. Lahko se uporablja kot miza za lepljenje, brušenje, poliranje, varjenje ali ročno rezanje. Prednosti serije ISI – Flow Desk: - Na voljo 8 izvedb naprav - Enostavna priključitev na odsesovanje preko nastavka na koncu mize - Oblika mize omogoča delo z 3 strani - Nastavljiva višina - Širok program dodatne in priključne opreme - Kakovost – izdelano v Evropi Bsdpjzdtquefx Altedf Odsesovalne mize ISI Air se ne sme uporabljati v povezavi z ATEX-conami.

Stanje: dober (rabljeno), Leto izdelave: 1983, številka stroja/vozila: 11774, Funkcionalnost: popolnoma funkcionalen, moč: 4,4 kW (5,98 KM), vhodna napetost: 380 V, vhodna frekvenca: 50 Hz, največja višina reza: 2.060 mm, največja širina rezanja: 4.300 mm, premer žaginega lista: 300 mm, največja hitrost vrtenja: 4.750 obr/min, skupna masa: 800 kg, Oprema: dozator, zaščitni pokrov žaginega lista, Stroj št.: 11774 Tip: 5206 A Leto izdelave: 06.1983, Napajanje: 3/380V/50Hz/9,2 A, Motor: 4,4 kW (5,5 KM), Kapaciteta rezanja: 4300 x 2060 x 80 mm Bsdpfxeyx Hdas Altedf

Stanje: dober (rabljeno), Leto izdelave: 2007, Funkcionalnost: popolnoma funkcionalen, Območje reza 5300 x 2240/2100 x 80 mm Globina reza 80 mm Predrezovalna enota Avtomatski podajalnik Avtomatsko potapljanje in dvigovanje Avtomatsko nagibanje Digitalni prikazovalniki mer za osi X in Y Bdedpfx Aloy D R Dbstof Avtomatska blokada žaginega mostu Stroj bo na voljo od približno sredine septembra.

Stanje: zelo dobro (rabljeno), Leto izdelave: 1988, Funkcionalnost: popolnoma funkcionalen, 1 rabljeni parni kotel ----- - z valovito kuriščnim cevjo in izbočenimi dnom - Proizvajalec: STANDARD Greta površina pribl.: 240 m² Zmogljivost: 13,4 t/h Najv. obratovalni nadtlak: 14,0 bar Preizkusni nadtlak: 18,2 bar Bedsxtndnopfx Altedf Vsebina vode pribl.: 18.160 l Leto izdelave: 1988 Opremljen z zemeljskim plinskim gorilnikom Saacke tip DG 80, plinsko regulacijsko lino, krmilno omaro, napajalno črpalko za vodni dovod in prisotnimi grobimi in finimi armaturami.

Stanje: zelo dobro (rabljeno), Leto izdelave: 2017, Funkcionalnost: popolnoma funkcionalen, Specifikacija: Dolžina reza: 3100 mm Vertikalna širina reza: 2070 mm Horizontalna širina reza: 1958 mm Bdsdpfxoyzf E Ue Altef Globina reza: 60 mm Moč motorja: 5,3 KM Premer žaginega lista: 250 mm Premer izvrtine lista: 30 mm 400V 50Hz

Stanje: novo, Leto izdelave: 2025, Funkcionalnost: popolnoma funkcionalen, Cutting area: 5300 x 2240/2100 x 80 mm Cutting depth: 80 mm Motor power: 5.5 kW Continuously adjustable scoring saw unit EPS.X – Electronic positioning system for X-axis stop 12" touchscreen display Saw Frame • Machine manufactured with high-precision parts to 1/100 mm tolerance • Massive, self-supporting, rigidly welded, torsion-resistant saw frame • TRK1 full-surface support wall made of birch multiplex with integrated small parts shelf • Auxiliary stop profile with dedicated measuring tape and 3 auxiliary stops for repeat cuts • Automatic detection of center support • Automatic roller locking during saw cut Saw Beam • Sturdy, durable steel construction • Automatic saw beam locking with cut position detection Bdjdpfx Aljyx H Dtotof Saw Unit • Play-free, smooth-running guides • Robust carriage bearings ensure high cutting precision • Powerful, high-torque 5.5 kW motor (7.5 HP) • Enhanced convenience thanks to largely automated operation • Laser-assisted horizontal cut display • Automatic carriage clamping • Automatic plunge and tilt of saw motor • Pneumatic clutch for easy manual mode changeover • SUPERSILENT soundproofing to reduce saw blade noise • Electromagnetic motor brake • ProLock Easy-Fix tool clamping system Control • 12" touchscreen control panel with optimized operator guidance • Multilingual operator interface • Tool database for maximum flexibility and repeat accuracy • Fully automatic sawing operation • Infinitely variable feed rates 10–25 m/min • Selectable sawing cycle • Panel end detection • Constant return speed • Operating hours counter • Network connectivity • 24VDC UPS for touch PC (Uninterruptible power supply) • Automatic saw beam positioning ASP Dimension Setting • DMS.x digital measurement system (horizontal axis for vertical cuts) • EPS.y electronic positioning system incl. ABO (vertical axis for horizontal cuts) Design, Ergonomics • Typical STRIEBIG product design • Multiple award-winning (including Swiss Design Prize) • Functional and ergonomic design Installation • Wall-mounted or free-standing installation possible

Stanje: rabljeno, Leto izdelave: 2016, Funkcionalnost: popolnoma funkcionalen, številka stroja/vozila: M08L/8716, Številka ponudbe: M08L/8716 Vrsta stroja: 7-matrica – 7-udarni stroj za toplo preoblikovanje Info: zaprt nož Znamka: NATIONAL FORMAX PLUS Bsdpfxewi Sulj Altodf Tip: FXP57S WF Leto izdelave: 2016 Premer območja: 8,5–22 mm Število matric: 7 Število stopenj: 8 Dolžina obdelovanca: 4–67 mm Dolžina stebla pod glavo: 4–75 mm Zmogljivost – kos/min: 175 Tlačna sila: 200(126) t Maks. zunanji premer okroglega kosa: 42 mm Hod: 150 mm Lokacija: Pri nas na zalogi

Stanje: rabljeno, Leto izdelave: 2005, skupna dolžina: 5.450 mm, skupna širina: 2.740 mm, skupna višina: 1.590 mm, Color: Grey Weight: 750 kg - Features: - Description: The slats of the rear wall are in poor condition - Year of manufacture: 2005 - Documentation available: No - CE certificate available: No - Serial number: 23677 - Maximum vertical cutting height [mm]: 2060 - Maximum horizontal cutting height [mm]: 1960 - Maximum cutting width [mm]: 4300 - Maximum cutting depth [mm]: 80 - Minimum saw blade diameter [mm]: 300 - Maximum saw blade diameter [mm]: 300 - Saw blade arbor bore diameter [mm]: 30 - Horizontal cutting: Yes - Vertical cutting: Yes - Transport dimensions: 5451mm x 2749mm x 1594mm (L x W x H) - Transport weight [kg]: 750kg - Transport units [pcs]: 1 Financial Information VAT: The stated price is exclusive of VAT VAT/margin scheme: VAT can be deducted by business customers Delivery and trade-in possible at any time for all items from the industrial sector Yorick Diebels Bdsdpfx Aljyr It Ietsf

Stanje: zelo dobro (rabljeno), Leto izdelave: 2025, obratovalne ure: 2 h, dvižna višina: 3.000 mm, vrsta goriva: dizel, moč: 39 kW (53,03 KM), Unladen weight: 3,680 kg Lifting capacity: 2,500 kg Overall height: 207 cm CE certification: yes Technical condition: very good Visual condition: very good Please contact Tobias Mayr for further information. Plus Power Diesel Forklift with duplex mast, work lights, side shifter Forklift specifications: Manufacturer: Plus Power Year of manufacture: 05/2025 Operating hours (read): only 2 hours Load capacity: 2,500 kg Lifting height: 3,000 mm (duplex mast) Unladen weight: approx. 3,680 kg Overall height: 207 cm Overall width: 117 cm Engine: 39kW Quanchai Diesel UVV inspection can be performed new upon request. Miscellaneous: Affordable delivery available throughout Europe. Inspection by appointment only. We are happy to accept your machines / construction equipment as trade-in. We are pleased to offer you a financing or leasing proposal tailored to your needs (for commercial customers only). Please contact us if you have any questions. All prices are ex location 86684 Holzheim Bdjdpfx Ajxkrv Ajltsf All information subject to change. Errors in printing/communication and prior sale reserved. All details regarding color, equipment, condition, features, etc. of the offered vehicles are provided without guarantee. Errors, mistakes and prior sale reserved.

Stanje: kot nova (razstavni stroj), Funkcionalnost: popolnoma funkcionalen, moč: 5,52 kW (7,51 KM), vhodna napetost: 400 V, vhodna frekvenca: 50 Hz, premer žaginega lista: 300 mm, skupna dolžina: 6.689 mm, skupna širina: 1.766 mm, skupna višina: 3.055 mm, dolžina rezanja (maks.): 5.300 mm, globina reza: 80 mm, premer ekstrakcijske šobe: 140 mm, Further technical data Vertical cutting height: 2,150 mm / 2,150 mm (lowered) Horizontal cutting height: 2,100 mm Width: 1,766 mm (free-standing) / 1,383 mm (wall-mounted) Cutting length: 5,300 mm / 3,000 mm / 5,000 mm (lowered) Saw Frame Self-supporting, torsion-resistant, welded frame with truss reinforcements, mounted on 4 sturdy machine feet Automatically retracting wooden support wall TRK1, with integrated small-part support (wood) Panel lowering device (PAV) with 2 panel lowering units, suitable for panel materials with a maximum weight of 160 kg (80 kg per unit) Length stop profile above the central support up to zero cut position Continuous length stop profile above the roller support with flip stop Precise 17-fold roller support, pneumatically braked Swing-away central support along the entire length, bearing grid made of aluminium with plastic supports Wall-mounting kit Aluminium small-part support (1 pair), individually deployable Saw Beam & Saw Unit Stable, durable saw beam with double locking mechanism Rugged, precision-guided motor carriage for high cutting accuracy Pneumatic clamping of the motor carriage Powerful, high-torque saw motor 5.5 kW (7.5 HP) Integrated high-performance TRK dust extraction for external extraction system Supersilent sound insulation Electromagnetic motor brake Paper holder Control Clear button control panel for intuitive operation Positioning of the panel lowering device via two-hand control Operator guidance via status indicator lights on the panel lowering units Bedexazapspfx Altodf Operating hours counter Measurement Adjustment Program cam switch for recurring dimensions Laser-assisted display of horizontal cut Digital measuring system DMS-Y, incl. motorized fine adjustment Digital measuring system DMS-X, incl. manual fine adjustment, mounting position selectable above central support or roller support Special Equipment 006 Striebig free-standing support 103 Digital measuring system DMS, X-axis 104 Digital measuring system DMS, Y-axis 105 Additional digital measuring system DMS, X-axis 200 Pro Lock Easy-Fix tool clamping system for saw blade 201 Scoring saw unit VSA 300 Additional panel lowering unit 401 Complete aluminium small-part support Incl. delivery and installation within postal code areas 71, 72, 73, 77, 78, 79, 86, 87, 88, 89

Stanje: kot nova (razstavni stroj), Funkcionalnost: popolnoma funkcionalen, moč: 5,52 kW (7,51 KM), vhodna napetost: 400 V, vhodna frekvenca: 50 Hz, premer žaginega lista: 300 mm, izvrtina žagine plošče: 30 mm, največja hitrost vrtenja: 4.800 obr/min, skupna masa: 1.200 kg, dolžina rezanja (maks.): 5.300 mm, globina reza: 80 mm, premer ekstrakcijske šobe: 140 mm, Dalsze dane techniczne Wysokość cięcia w pionie: 2240 mm Wysokość cięcia w poziomie: 2100 mm Przyłącze sprężonego powietrza: 6-10 bar CONTROL definiuje klasę premium w pionowej technologii cięcia dzięki wysokiemu poziomowi automatyzacji procesu cięcia oraz innowacyjnym opcjom wyposażenia. Inteligentna wizualizacja na przejrzystym 12-calowym komputerze z ekranem dotykowym prowadzi użytkownika krok po kroku przez proces cięcia. Za pomocą logicznie zaprojektowanego interfejsu obsługujesz system CONTROL łatwo i wygodnie na 12” ekranie dotykowym. Dzięki seryjnemu EPS-Y pozycjonujesz zespół tnący automatycznie do poziomego cięcia. Również w standardzie system ABO zapewnia automatyczne wykonanie górnego cięcia wyrównującego. Bdedpfjxazflox Altof Z tą opcją również dolne cięcia wyrównujące wykonywane są automatycznie. Obracanie materiału płytowego oraz związane z tym ciężkie prace manualne nie są już konieczne. W zestawie dostawa i montaż na terenie kodów pocztowych 71, 72, 73, 77, 78, 79, 86, 87, 88, 89.

Stanje: dober (rabljeno), Leto izdelave: 1995, številka stroja/vozila: 25486, Funkcionalnost: omejena funkcionalnost, moč: 4,4 kW (5,98 KM), vhodna napetost: 400 V, vhodni tok: 12 A, največja višina reza: 2.200 mm, največja širina rezanja: 5.300 mm, premer žaginega lista: 300 mm, vrtljajska hitrost (min.): 4.750 obr/min, skupna dolžina: 6.400 mm, skupna masa: 1.000 kg, Oprema: dozator, Tipi: 6220 AV, zmogljivost rezanja: 5300 x 2200 x 80 mm, predrezalna enota Bjdpeywtw Dofx Altedf

Stanje: zelo dobro (rabljeno), see pictures; further extensive clamping devices available! Bodoha U U Ropfx Altsdf Please contact us if you are interested!

Stanje: zelo dobro (rabljeno), Leto izdelave: 2010, Tehnični podatki Bdjdpfxeud Sk Se Altsf Višina reza navpično: 2.200 mm Višina reza vodoravno: 2.080 mm Priključek za odsesavanje: 2 x 100 mm Širina [mm]: 1.700 mm Višina: 3.000 mm Dolžina [mm]: 6.570 mm Moč motorja: 7,5 KM (5,5 kW) Napetost motorja: 3 x 400 V Premer žaginega lista: 300 mm Dolžina reza: 5.300 mm Globina reza: 80 mm Digitalni prikaz za horizontalni in vertikalni rez Leto izdelave: 2010 Neto cena: 11.190

Stanje: rabljeno, Leto izdelave: 2011, Striebig COMPACT ALU 11 vertikalne ploščate žage Bdedpfsynkwuox Altof

Stanje: rabljeno, Leto izdelave: 1966, Funkcionalnost: popolnoma funkcionalen, največja višina reza: 2.800 mm, največja širina rezanja: 5.600 mm, premer žaginega lista: 305 mm, skupna širina: 6.000 mm, skupna višina: 2.850 mm, skupna masa: 550 kg, Prodaja se popolnoma funkcionalna in robustna vertikalna formatna žaga priznane kakovostne znamke Striebig. Stroj deluje brezhibno in omogoča rezanje pod kotom. Idealna izbira za obrtnike, delavnice ali zahtevne domače mojstre. Bodpfx Aoy St Npjltjdf Leto izdelave: pribl. 1966, višina okvirja: pribl. 2.850 mm, širina okvirja: pribl. 6.000 mm, delovna dolžina: pribl. 5.600 mm, delovna višina: pribl. 2.100 mm. Formatna žaga se prodaja v trenutnem stanju. Razstavljanje uredimo mi, prevoz mora kupec v celoti sam organizirati, izvesti in plačati. Prodaja poteka izključno brez kakršnegakoli jamstva, garancije ali vračila (zasebna prodaja).

Stanje: novo, Leto izdelave: 2025, Parni kotel 12.000 kg x 16 ali 26 bar Parni kotel 16.000 kg x 26 bar Nov kotel Znamka: VKK Standard Opremljen in montiran s strani Hagelschuer Bdodpfxepky Dxo Altef z ali brez Eco - po povpraševanju Kotel s tremi potmi iZdelava po DIN 12953 takoj na voljo - velikosti in oprema po povpraševanju