Used Otc Inverter Welding Source Digital Inverter for sale (15,221)

Condition: good (used), Year of construction: 2008, Inverter welding machine, power source, digital control inverter Dodpfjzck Rdex Ai Aock -Manufacturer, Type: OTC DAIHEN, DP-500 -Welding current range: 500A 60%, 350A 100% -Mains connection: 400 V -Software version: P10499 Ver003. 200,000 Accessories: as shown in the pictures -Dimensions: 700/300/H600 mm -Weight: 57 kg

Condition: used, Power source for orbital welding machine MESSER GRIESHEIM - POLYSOUDE PS204 Water cooling unit for orbital welding machine MESSER GRIESHEIM - POLYSOUDE RC200 Welding power source, inverter welding machine POLYSOUDE PS 204 + RC 200 Year of manufacture: 1997 Power source serial no.: 9885186 Cooling unit serial no.: 97861? Output: 200 amps = 20% duty cycle 90 amps = 100% duty cycle Power supply: 230 volts, 50 Hz, Schuko plug - Remote control cable type BP 1436 with 7.5 m connection cable - Adjustable output from 1 to 200 amps - DC only - HF ignition - Cooling water unit for torch cooling - 44,895 operating hours (read) - Operating and maintenance manual included Space requirements welding machine (L x W x H): 550 x 360 x 500 mm Space requirements cooling unit (L x W x H): 550 x 360 x 550 mm Weight welding machine: 45 kg Weight cooling unit: 25 kg Dcodpfx Aet Awm Dei Ajk Good condition Sold without accessories The price refers to a set consisting of 1x power source and 1x water cooler.

Condition: used, Power source for orbital welding machine MESSER GRIESHEIM - POLYSOUDE PS204 Water cooler for orbital welding machine MESSER GRIESHEIM - POLYSOUDE RC200 Welding power source, inverter welding unit POLYSOUDE PS 204 + RC 200 Year of manufacture: 1996 Serial number welding source: 9785153 Serial number cooling unit: 968628 Output: 200 amps = 20% duty cycle 90 amps = 100% duty cycle Mains connection: 230 volts, 50 Hz, Schuko plug - Note: Display on the power source becomes illegible after some time - Remote control cable type BP 1436 with 7.5 meter connection cable - Adjustable output from 1 to 200 amps - DC only - HF ignition Dodpfeyhq A Rjx Ai Aeck - Cooling water unit for torch cooling - 118,643 operating hours (read off) - Operating and maintenance manual Space requirement welding machine (L x W x H): 550 x 360 x 500 mm Space requirement cooling unit (L x W x H): 550 x 360 x 550 mm Weight welding machine: 45 kg Weight cooling unit: 25 kg Good condition Note: Display on power source becomes illegible after some time Without accessories Price applies to one set consisting of 1x power source and 1x water cooler.

Condition: used, Micro welding head unit, spot welding system with welding head, inverter power source, I/O module, welding inverter MIYACHI PECO / AMADA WELD TECH GmbH Type ISQ20 Kompakt ISQ-AC/DC-AWS-EXT-250A 22KVA + PECO F160S Year of manufacture: 2011 The system consists of the following components: - Welding inverter MIYACHI PECO Type ISQ20 Kompakt ISQ-AC/DC-AWS-EXT-250A 22KVA with MFT1 control panel - External welding transformer MIYACHI PECO (mounted on the welding head frame) Dcodpfx Aiopy Uzyo Ajk - External interface module MIYACHI PECO Type ISQ-MG - Spot welding head MIYACHI PECO Type F160S – 25 mm stroke with Heidenhain measurement system - Connection cables Mains voltage: 3x 400 V AC Mains frequency: 50 / 60 Hz Connected load: 22 KVA Welding current types: AC / DC Output current: max. 10 kA Output frequency: 1 - 10 kHz Welding time: max. 640 ms/pulse Current measurement: external toroidal coil Control panel: MFT1 (independent removable control unit) Analog input: pressure sensor for proportional valve Analog output: proportional valve control Interface: RS232 Protection class: IP30 - Error monitoring and process control - Monitoring of current, voltage, power, energy - Test pulse for part recognition - Program memory for 99 programs Inverter dimensions (W x H x D): 216 x 420 x 560 mm Inverter weight: approx. 21 kg Spot welding head MIYACHI PECO F160S Rated current: max. 5 kA Electrode stroke: 25 mm Closing stroke: pneumatic - Adjustable force ignition from 1.2 to 550 N - Heidenhain distance measuring system Welding unit with 5 pneumatic cylinders and Festo valve terminal Type CPX Welding head mounted on horizontal guide rail and can be moved 20 mm via pneumatic cylinder. 3 pneumatic cylinders available for workpiece clamping (2 units with 46 mm stroke, 1 unit with 20 mm stroke). Throat depth (distance from welding tip to frame): 300 mm Welding tip height above floor: 315 mm Welding unit dimensions (W x H x D): 410 x 760 x 700 mm Welding unit weight: 75 kg Total weight: 100 kg 2 nearly identical units available, price per complete unit.

Condition: good (used), TIG welding machine, inverter welding machine, TIG welding machine, inverter welding machine Dedpfex Ir Ipox Ai Asck -Manufacturer: Oerlikon, Inverter welding machine type CITISTICK 160 -Welding current range: 5-160A -Mains connection: 230V -Accessories: Welding cable with electrode clamp, ground cable -Dimensions: 430/300/H340 mm -Weight: 11 kg

Condition: good (used), TIG welding machine, inverter welding machine, TIG welding machine, inverter welding machine -Max. welding power: 350 A -Accessories: Welding cable with electrode clamp, ground cable -Quantity: 1 welding machine available Dsdpfefivizox Ai Asck -Price: per piece -Dimensions: 390/550/H530 mm -Weight: 56 kg

Condition: used, Impulse shielding gas welding machine REHM type RMP 400 Hybrid (REHM-Mega-Puls) Pulse welding unit with inverter welding power source Serial no. Year of manufacture 1998 Power output 400 Amps = 60% duty cycle 320 Amps = 100% duty cycle Dcedpfx Aiswa Uwde Aok Continuously adjustable range Mains connection 400 Volt, 50 Hz, 32 Amp plug - separate 4-roller wire feed unit with connecting hose package meters - digital display for voltage and current - pulse welding function with single and double pulses - 2-stroke and 4-stroke welding function - 4 meter Binzel hose package with central connection - water-cooled - shielding gas pressure regulator - MIG/MAG pulse arc welding - MSG double pulse welding - MIG/MAG welding Space requirement L x W x H 1150 x 510 x 1350 mm Weight 200 kg good condition

Condition: new, functionality: fully functional, input voltage: 380 V, Equipment: cabin, The EasyArc welding robot from OTC DAIHEN Easy Plug & Play installation with the FD19 V8 + ARXIS/Welbee MIG MAG or the FD19 B6 + A350P/A500P ACDC power source. Welding table with intelligent system grids for clamping and positioning workpieces. Fully assembled and CE-compliant documentation. Optional with a Horizontal Rotary Positioner for tube/pipe welding. Operational with the TeachBox or PhotoTeach. What is supplied: OTC MIG/MAG or TIG power source OTC FD19 V8 or B6 Robotic arm 1200x2000mm 3D Siegmund clamping table Housing Djdpfx Aieywgq Ro Ajck CE Documentation TeachBox or PhotoTeach controller Optional: Horizontal Rotary Positioner for welding tubes/pipes. Mobile compact design: space-saving, flexible and economical to purchase. Simple operation with OTC Easy Teach control: minimum time required to create the welding programme, even without extensive training. Welding programme creation even without extensive training Stable and precise welding robot: relieves employees and ensures optimised, constant welding quality optimised, constant welding quality Safety technology according to CE standards: Electrically monitored, lightweight protective housing. Feel free to contact us for more information.

Condition: used, MIG MAG welding machine, gas-shielded welding unit, CLOOS type GLC 357 N MIG MAG welding power source Manufacturer's number: 576, Year of manufacture: approx. 1985 Rated power: 350 Amps Dcodpfx Ashubg Tji Aok Power: 350 Amps - 80% duty cycle 310 Amps - 100% duty cycle Adjustment range: stepless Connecting hose package: 4.5 meters Mains connection: 380 Volts, 50 Hz, 32 Amp plug - 2-cycle and 4-cycle welding system - external wire feeder, type CK 72 ZK, with 2-roller drive and 4.5-meter hose package - 3-meter hose package with central connection and CLOOS hand torch - water-cooled - pressure gauge for gas cylinder - welding machine equipped with 1 mm welding wire Space requirement L x W x H: 1250 x 600 x 1100 mm Weight: 260 kg Device tested - function is working properly.

Condition: used, Inverter welding machine for manual arc welding, TECHNOLIT Type PROFImat 170 Plus MMA welding machine, inverter welding machine, manual arc welding inverter New - unused Serial No.: TB1703500316 Article No.: 440030 Year of manufacture: 2022 Output WIG (DC) 170 amps, 45% duty cycle 150 amps, 60% duty cycle 135 amps, 100% duty cycle Dcsdei E Iz Iepfx Ai Aek Output manual arc welding 170 amps, 35% duty cycle 145 amps, 60% duty cycle 125 amps, 100% duty cycle Adjustment range 5-170 amps, continuously adjustable Mains connection 230 volts, 50 Hz - Hot-start function (optimizes ignition behavior, simplifies starting the welding process for electrodes that are difficult to ignite) - Anti-stick function (optimizes electrode guidance and prevents possible sticking of the electrode) - Arc-force function (optimizes arc stability and improves penetration) - Lift-arc arc ignition - Stick electrode welding, suitable for all electrode types up to Ø 4 mm - Ground cable with plug connection - Electrode holder with 3-meter cable and plug connection - Equipped with a 230-volt Schuko plug - S-mark for welding under increased electrical hazard - Overvoltage protection Dimensions (device without cable) L x W x H 310 x 155 x 265 mm Weight (without cable) 7 kg NEW - unused, from stock

Condition: used, TIG and Electric Welding Machine / Inverter ESAB Type LTN 160 TIG Welding Machine for TIG and Electrode Manufacturer No. 405-423-0479 Year of manufacture approx. 2010 TIG Output 160 Amps = 35% duty cycle 110 Amps = 60% duty cycle 80 Amps = 100% duty cycle Electrode Output 140 Amps = 35% duty cycle 110 Amps = 60% duty cycle 80 Amps = 100% duty cycle Power supply 230 Volts, 50 Hz, Schuko plug - Continuous power adjustment Dodov Uragjpfx Ai Asck - 2-stroke and 4-stroke operation - Stick electrode operation - 12-meter TIG hose package with hand torch - Direct current only (DC) - HF ignition - Shielding gas pressure regulator - Mobile trolley with cylinder holder Space requirements L x W x H 800 x 690 x 1120 mm Weight 60 kg Good condition

Condition: used, Inverter welding machine for manual electric welding IMS - GYS type PROGYS FLEX 280A CEL MMA welding machine, inverter welding machine, manual electric welding inverter Serial no. IEC 60974 Year of manufacture 2020 Power with mains operation 400 Volt (40% ED) 280 Amp. Power with mains operation 400 Volt (60% ED) 200 Amp. Power for mains operation 400 Volt (100% ED) 170 Amp. Power for mains operation 230 Volt (40% ED) 200 Amp. Power for mains operation 230 Volt (60% ED) 180 Amp. Power for mains operation 230 Volt (100% ED) 150 Amp. Adjustment range 5-280 Amp. stepless Mains connection 230 / 400 Volt, 50 Hz. - Operating voltage from 110 to 480 volts alternating current - Adapts fully automatically to the existing mains supply Dcedpfevg Rh Tex Ai Ask - equipped with 16 Amp. CEE plug for 400 Volt mains voltage - Hot-start function (optimizes the ignition behaviour, simplifies the welding start of electrodes that are difficult to ignite) - Anti-stick function (optimizes electrode guidance and prevents the electrode from sticking) - Arc-Force function (optimizes arc stability and improves penetration) - Digital display - Plug socket for remote control connection - Earth cable with plug connection - Electrode tongs with 3 meter cable and plug connection - Stick electrode welding, can be used for all electrode types up to Ø 5 mm - TIG-DC welding (without TIG hosepack) - The device may be connected to a flexible three-phase power supply between 110 V and 480 V or to a fixed three-phase 400 V power supply (50 - 60 Hz) plus ground wire. This appliance may only be connected to a 3-phase power supply system with 4 conductors, where the neutral conductor is earthed. Dimensions (appliance without cable) L x W x H 470 x 270 x 430 mm Weight (without cable) 23 kg New, unused

Condition: used, MF welding machine with water-cooled projection welding head Medium-frequency projection welding head Manufacturer: TECNA (Italy) Model 3670 E CF00 Serial No.: Year of manufacture 2014 Rated welding power 25 kVA Max. welding power 160 kVA Mains connection 400 Volt, 50 Hz - Welding control TE750 or TE760 - Projection welding head for single-sided spot welding - Ideal for repair work in the bodywork area, ensuring the best welding quality - Water-cooled, type 2BHPLN - Mobile transport trolley Djdjg U A Uzepfx Ai Aock Weight approx. 155 kg Very good condition - like new

Condition: used, Electric welding machine, stick electrode welding machine ESAB Type LTG 250 Machine No. 736-820-387 Year of manufacture 1997 Output: 250 Amps = 35% duty cycle 190 Amps = 60% duty cycle 150 Amps = 100% duty cycle Output setting: stepless - Electrode holder with 6-meter connection cable - Direct current - Fan-cooled - Optional, TIG welding is also possible, without hose pack Mains connection: 380 Volts, 50 Hz, 32 Amp plug Space required L x W x H: 1200 x 750 x 1050 mm Weight: 180 kg Good condition The unit was originally also designed for TIG welding. The hose pack for TIG welding is not included, and the function has not been tested. Dcodpfx Aisd N E Rvs Aek The water cooling was for the hose pack for TIG welding. Therefore, the unit will only be sold as a stick electrode welding machine. The welding test with stick electrodes yields very good results.

Condition: used, WIG and electrode inverter welding unit ESS Type 170 ATG (AC-DC) TIG welding machine Serial No. Year of manufacture: 2007 TIG output 170 amps = 35% duty cycle 130 amps = 60% duty cycle 110 amps = 100% duty cycle Electrode output 140 amps = 35% duty cycle Mains supply 230 Volt, 50 Hz - DC and AC welding - HF ignition - stepless power adjustment - 2-stroke and 4-stroke operation - pulse welding mode - stick electrode operation - 8 meter hose package with TIG torch - shielding gas pressure regulator Dcedpfx Ajrtvi Uoi Aek - fan cooling - portable Equipment dimensions (L x W x H) 400 x 270 x 500 mm Weight 26 kg The welding test shows very good results when welding stainless steel with DC current and very good results when welding aluminium with AC current. Overall in very good condition.

Condition: used, WIG and Electric Inverter Welding Machine ESS Type Transtig 231 (DC) WIG Welding Machine Serial No. Year of manufacture: 2007 WIG output: 225 A = 40% duty cycle 180 A = 60% duty cycle 140 A = 100% duty cycle Djdpfjrtvi Rox Ai Aeck Electrode output: 180 A = 50% duty cycle Power supply: 400 Volt, 50 Hz, 16 Amp plug - DC welding unit - stepless power adjustment - 2-stroke and 4-stroke operation - HF ignition - pulse welding mode - stick electrode mode - water-cooled - 8 meter WIG hose assembly with hand torch - shielding gas regulator - operating manual Space requirement (L x W x H): 1000 x 450 x 710 mm Weight: 90 kg The welding test produced very good results when welding stainless steel with DC. Otherwise in very good overall condition.

Condition: used, machine/vehicle number: 000150000222, welding current max. 260 A 260 A at 60 % ED 201 A at 100 % ED Dedpfsf Sa T Usx Ai Aock remote control SELCO RC08 space requirements length - 560 x width - 240 x height - 400 mm weight approx. 37 kg

Condition: used, Serial number: 280935 Dcodozm Ib Hepfx Ai Ask Duty cycle: 100%/240A Online auction of metalworking and sheet metal processing machines (including a wide selection of SIEGMUND welding and clamping tables and related tools, SAFAN press brakes and SAFAN guillotine shears, MOSMAN YLS-3000 3kW laser welding machine, various FRONIUS, REHM, etc. welding machines, BOMAR, URSUS, ELHA, etc.), remaining stock of sheet metal, materials and inventory, rolling stock, technical equipment, and modern office furniture, released following the recent bankruptcy of Solex Thermal Science (Netherlands) B.V., formerly Mosman Stainless Steel in Haaksbergen, the Netherlands. The online auction opens Thursday 16 July and closes Thursday 3 September. Register your account via our website and place your bid. For viewings and inspections check the auction information on the website. Viewing day is on: - Tuesday 1 September Pickup days are on: - Thursday 10 September - Friday 11 September Dome Auctions is an innovative auction platform dedicated exclusively to the industrial sector. By focusing on machinery sales from business closures, restructurings, and bankruptcies, we provide a trusted marketplace where buyers and sellers connect with confidence. Unlike general auction houses, Dome Auctions specializes in selling complete industrial assets directly from factories, ensuring quality and reliability. With a commitment to transparency, industry expertise, and tailored service, we streamline the sales process and maximize value for all parties. As online auctions continue to grow in the European industrial market, Dome Auctions offers a professional and efficient solution for companies seeking high-quality machinery at competitive prices.

Condition: new, Year of construction: 2025, load capacity: 1,000 kg, lifting height: 800 mm, fuel type: electric, empty load weight: 140 kg, NEW price includes delivery in the Netherlands and Belgium! Semi-electric scissor pallet truck Brand: Total Source Year of manufacture: 2025 Capacity: 1,000 kg Lifts to a height of 800 mm Manual drive Electric lift Dcodey R Aghepfx Ai Aok Equipped with a 12 V battery Internal charger Charging time = 20 hours for the first charge, then 8-10 hours for each subsequent charge Lifting speed = without load, lifting speed is 15 seconds; with load, lifting speed is 20 seconds Autonomy = it can lift and lower 80 times when fully charged.

Condition: new, Year of construction: 2026, functionality: fully functional, type of input current: three-phase, input voltage: 400 V, ground cable length: 4,000 mm, type of cooling: water, hose package length: 10,000 mm, welding current at 60% duty cycle: 320 A, protection type (IP code): IP23, welding current (min.): 5 A, welding current (max.): 320 A, The uncomprimising entry into the professional world of pulse welding – for an unbeatable price Continuously variable welding inverter for MIG/MAG pusle arc welding Robust 4-roll wire feeder (encoder regulated) Customizable LCD Panel Higher Power with an upper limit of wire feeding speed from 18 to 22m/min Artificial Intelligence (AI) controlled smart pulse process Steel + Stainless Steel Pulse (Aluminium package can be bought afterwards) 380/400 Volt 30-320 AMP 60% 320 AMP Duty-Cycle (P323E) Dodpjzqz A Sefx Ai Asck Including: OTC ARXIS P323E Water-cool unit Trolley PRO5000 4 Meter Welding Torch Earth cble 70mm² 5 Meter 10 Meter Interconnection hose 2 Years Warranty Visits by appointment only. Test welding is possible. A video of the machine in welding condition is possible. We also deliver to countries like Spain, Germany, Austria, Lithuania, Greece and all other countries inside and outside Europe with Euro pallets per freight. All our machines have been serviced and are 100% ready to use unless otherwise indicated. The pictures above show the real machine. We can also offer you other types of machines such as: Used, New, Mig, Mag, Co2, Tig, Pulse, AC/DC, Plasma, Water-cooled, Electrode, Brands we offer: OTC, Migatronic, Lincoln, Miller, Fronius, Kemppi, Parweld, Tico, Lorch, Rehm, Selco, Carl Cloos, Cebora, Esab, Saf, EWM, Ess, Kemper. You always do business with Cjays Lastechniek itself and never with third parties.

Condition: excellent (used), Year of construction: 2018, Source Technology PowerHeater and FlexiCut machines. Direct from meat-free facility, used for making vegetarian 'chicken style' products. In excellent condition and rarely available for sale as used machines. New price of these machines is £750,000 Dcjdpfx Aist Rh T De Ajk

Condition: new, Year of construction: 2026, functionality: fully functional, type of input current: three-phase, input voltage: 380 V, ground cable length: 4,000 mm, warranty duration: 24 months, type of cooling: water, welding current (min.): 30 A, welding current (max.): 400 A, OTC DAIHEN CPTX-i 400 2W Built for professionals. Ready for years of production. Looking for a reliable industrial MIG/MAG welding machine that performs day after day? The OTC DAIHEN CPTX-i 400 2W is designed for companies that value reliability, welding quality and low operating costs. Fully inspected, tested and ready for immediate use. ✔ Industrial 400 Amp inverter ✔ Exceptional arc stability ✔ Built for intensive daily use ✔ Reliable Japanese technology ✔ 3 months warranty Included: • OTC wire feeder • Interconnecting cable • Ground cable • Welding torch (if included) 🌍 Worldwide shipping available. 📩 Contact us for more information, photos or a demonstration. Specifications 400 Amp 400 Volt Water-cooled MIG/MAG Synergic Dodpoznt Rijfx Ai Aock 2/4 Step Industrial inverter 4-roll wire feed 24 Months Warranty Visits by appointment only. Test welding is possible. A video of the machine in welding condition is possible. We also deliver to countries like Spain, Germany, Austria, Lithuania, Greece and all other countries inside and outside Europe with Euro pallets per freight. All our machines have been serviced and are 100% ready to use unless otherwise indicated. The pictures above show the real machine. We can also offer you other types of machines such as: Used, New, Mig, Mag, Co2, Tig, Pulse, AC/DC, Plasma, Water-cooled, Electrode, Brands we offer: OTC, Migatronic, Lincoln, Miller, Fronius, Kemppi, Parweld, Tico, Lorch, Rehm, Selco, Carl Cloos, Cebora, Esab, Saf, EWM, Ess, Kemper. You always do business with Cjays Lastechniek itself and never with third parties.

Condition: ready for operation (used), Year of construction: 1998, number of axes: 6, This 6-axis OTC Daihen DR4200 welding robot was manufactured in 1998. It includes a teach pendant, DR controller, and a welding power source rated at 350A. Additionally, it comes with a second OTC DR4200 robot, also equipped with a teach pendant and a 500A welding power source. If you are looking to get high-quality welding capabilities, consider the OTC Daihen DR4200 welding robot we have for sale. Contact us for further details. • Robotic welding installation (OTC), consisting of a main welding cell plus an additional older track robot set • Jig carriers are not included Dedpfx Aijzl Dnts Ajck Additional equipment • Main cell: • Robot: OTC DR4200 • Teach pendant • 2x Manipulator: OTC RPH 1000N • Controller: DR • Welding power source: OTC 350A • Fencing with light screens • Additional old track robot set: • Robot: OTC DR4200 • Teach pendant • Controller: DR • Welding power source: OTC 500A

Condition: new, Year of construction: 2025, functionality: fully functional, type of input current: three-phase, ground cable length: 4,000 mm, warranty duration: 24 months, type of cooling: air, welding current at 60% duty cycle: 273 A, welding current at 100% duty cycle: 212 A, welding current (min.): 30 A, welding current (max.): 300 A, OTC CPTX-i 300C - MIG MAG Welding Machine Dedszmduvopfx Ai Ajck New and Ready-for-use 24 Months Waranty Specifications: 30-300A Synergic 4 Roller Drive Fixed Programs Steel & Stainless Steel Weldable Including: 4 meter PRO2500 Mig Welding Torch 5 Meter Earth Work lead with Clamp and Dinse plug Gas cable 0,8-1,0mm Wire feed rolls Pressure regulator Manual Visits by appointment only. Test welding is possible. A video of the machine in welding condition is possible. We also deliver to countries like Spain, Germany, Austria, Lithuania, Greece and all other countries inside and outside Europe with Euro pallets per freight. All our machines have been serviced and are 100% ready to use unless otherwise indicated. The pictures above show the real machine. We can also offer you other types of machines such as: Used, New, Mig, Mag, Co2, Tig, Pulse, AC/DC, Plasma, Water-cooled, Electrode, Brands we offer: OTC, Migatronic, Lincoln, Miller, Fronius, Kemppi, Parweld, Tico, Lorch, Rehm, Selco, Carl Cloos, Cebora, Esab, Saf, EWM, Ess, Kemper. You always do business with Cjays Lastechniek itself and never with third parties.

Year of construction: 2006, condition: good (used), Flame cutting system, torch, oxyfuel cutting system, machine cutting torch, flame cutting machine, cutting torch, cutting machine, oxyfuel cutting machine, gas cutting torch -Manufacturer: Messer Cutting & Welding, machine cutting torch, flame cutting machine -Type: Quicky -Cutting speed: adjustable -Voltage: 230 V 40 W -Dimensions: 520/280/H330 mm Dedpfx Asxy Hqtji Aeck -Weight: 7.8 kg