Used Rösler Sandblasting/Shot Blasting Device for sale (12,381)

Condition: excellent (used), Year of construction: 2024, operating hours: 4,000 h, functionality: fully functional, machine/vehicle number: 111549, air demand: 6 m³/h, operating pressure: 6 bar, total width: 1,300 mm, type of input current: three-phase, inner dimension length: 8,000 mm, I am pleased to present a custom-built Rosler 100-4 HD machine. This machine is used for shot blasting steel parts, where a high surface roughness is required. - Year of manufacture: 2024 - Machine operating time: 4000 hours - Mesh conveyor belt made of manganese steel, 1000 mm wide - Adjustable speed of the conveyor belt - 4 turbines, power 11 kW, Rutten Gamma 330 HD model - Continuously variable turbine speed control - Automatic part detection - Automatic abrasive flow control - Automatic abrasive filling - Automatic part blow-off Lajdswvgbgspfx Anxog - Rosler BF 40/40 dust collection system - The machine is additionally equipped with a wet dust collector, which enables the shot blasting of aluminum parts (additional installation fee applies). - Hot Spot chamber made of manganese steel and tool steel - The machine allows operation with media of the highest hardness (GH, sharp-edged) or cut shot, making it an ideal solution for the rubber industry, where high surface roughness is needed during the rubber vulcanization process. - Turbine blades made of cemented carbide guarantee 30,000 hours of operation. - Turbine housings made of cemented carbide provide even greater protection against wear and tear on the machine body.

Condition: used, Year of construction: 2005, This RÖSLER continuous shot blasting machine, model RMBC 1.1, will be auctioned off online in our industrial auction / machine auction – J&S GmbH Automotive Technology – machinery park post-auction. Laodpfx Anjzxf Rvoxsg You can find this and many other items on our platform.

Condition: reconditioned (used), functionality: fully functional, We offer refurbished turbines from a continuous blasting machine – Rösler RRB 22/5-L. Turbine type: Hurricane H42. Ledpfxoztp Alo Anxoag The stated price is for 1 unit. Turbines are refurbished using original spare parts made of tool steel. Blasting machine, blasting nozzle, blasting and sanding, sandblasting, blasting, shot blasting turbine.

Year of construction: 2019, condition: excellent (used), functionality: fully functional, machine/vehicle number: 18M0227, Shot blasting / sandblasting machine. Used for a short period, custom-made by NORDBLAST. The machine’s original purpose was to compact the aluminum from which bicycle rims are made and to create a rough surface texture, resulting in a homogeneous rim surface. Thanks to its nozzle-based application system, the machine is versatile and suitable for various applications. SIEMENS control system, filtration unit, etc. Ledszu Slrspfx Anxjag

Condition: used, Year of construction: 2001, machine/vehicle number: 170028-1, This USF Wheelabrator T83 crawler-type shot blasting machine is being auctioned off online as part of our industrial auction / machine auction follow-up auction, J&S GmbH Automotive Technology - Machine Park. You can find this and many other items on our platform. Laedpfx Anjzyfz Djxjg

Condition: excellent (used), Year of construction: 1995, functionality: fully functional, total width: 1,325 mm, total height: 3,250 mm, total length: 3,735 mm, overall weight: 5,000 kg, We offer a table-type shot blasting machine – Škoda TMSO 2.4/5. Ledjz Dfuvopfx Anxjag The machine has 2 rotating tables with a diameter of 1000 mm. It features one turbine with a power input of 7.5 kW. The machine is in excellent condition, fully functional, and can be tested in operation.

Condition: excellent (used), Year of construction: 2017, We offer a table shot blasting machine TZS 1 Manufacturer: KOVO Staněk Table diameter: 1,100 mm Year of manufacture: 2017 Weight: 2,500 kg Lasdpfewurhisx Anxeg Very good condition.

Condition: excellent (used), Year of construction: 1999, operating hours: 1,437 h, functionality: fully functional, machine/vehicle number: 4204, pressure: 6 bar, total width: 1,700 mm, inner dimension width: 1,700 mm, workpiece weight (max.): 3,000 kg, turntable diameter: 1,400 mm, We offer this shot blasting machine manufactured by Carlo Banfi in 1999 and completely overhauled by METAL SERVICE s.r.l. in 2024. Rotating barrel machine with metal ribs Capacity: 3,000 kg Laedpfxjznvtaj Anxeg Diameter: 1,400 mm Chamber width: 1,700 mm Magnetic separator Double turbine, each with a 30 kW electric motor and belt drive Complete with: Dust collection filter Loading hopper complete with guards Parts unloading conveyor belt Complete with CE certification, electrical diagrams, and operating and maintenance manual If you have any questions or require further information, please do not hesitate to send us a message or call us.

Condition: excellent (used), Shot blasting machine, continuous blasting machine, wear plates, blast wheel discs -Spare and wear parts: for shot peening system continuous blasting system -Baffle plates: 02122 V105 7 pieces dimensions 390/125/H145 mm / 11.7 kg/piece. -Baffle plates: C1315 N517 2 pieces dimensions 480/140/H175 mm / 15 kg/piece. -Spinning wheel discs: 02122 V105 16 pieces, dimensions 350 x 80 mm / 112.5 kg/total. Ledpfowaiv Ujx Anxsag -Accelerator gears: 4 pcs. Ø 250 x 320 mm / 27 kg/pc. -Conveyor shafts: 3 pieces Ø 80 x 1640 mm / 40 kg/piece -Shipping/Price: complete -Total weight: 452.4 kg

Condition: ready for operation (used), Year of construction: 2009, operating hours: 5,280 h, functionality: fully functional, We offer a table-type shot blasting machine – STEM 14x6/2S/2WX1M with a table diameter of 1400 mm. The machine is in very good condition and ready for immediate use. The shot blasting machine has two rotary tables and two turbines, each with a power consumption of 5.5 kW. The designed shot blasting unit is manufactured for semi-automatic shot blasting of the outer surface of parts placed on a rotary table. The machine is equipped with two rotary tables. Rotary table diameter: 1400 mm Maximum product height: 600 mm Lajdpozwqyyofx Anxjg Type: 14x6/2S/2WX1M Year of manufacture: 2009 Number of operating hours: 5275 Commissioning date: March 31, 2009 Machine weight: 5000 kg Machine length: 3540 mm Machine height: 5540 mm Machine width: 6600 mm Total power consumption: 20 kW Operating range Blast wheel, number and type: 2 WX1M Outer diameter of the blast wheel: 330 mm Blast wheel speed: 2900 rpm Amount of abrasive material discharged per turbine: 80-90 kg/min Amount of abrasive material for initial filling: 500 kg Rotary table diameter: 1400 mm Rotary table speed: 2 rpm Spindle diameter in the front bearing: 105 mm Maximum torque on the spindle: 2500 Nm Distance of the spindle axis from the clamping surface of the table: 60-560 mm Maximum workpiece weight: 1500 kg

Condition: refurbished (used), Shot blasting machine, Turntable Shot Blas Machine, abrasive blasting machine, surface treatment machine, Wheelabrator-Berger, Used Machine Manufacturer: Wheelabrator-Berger Maschinenfabriken GmbH & Co. KG Machine No.: 8502 Order No. (Kom. Nr.): 80305 Overall Dimensions Width: 2000 mm Depth: 2150 mm Height: 3900 mm Dust Collector Dimensions Width: 1400 mm Depth: 1270 mm Ljdpfx Anszbqp Dsxsag Height: 3500 mm Dust Collector Manufacturer: Abrasiv Technical Specifications Automatic cleaning process with air blow-off Total electrical power: 15 kW Refurbished shaft and belt pulley Two electric motors have been rewound

Condition: excellent (used), Year of construction: 2011, Fully automatic Rösler dual-stream cleaning system, automated with industrial robots, cleaning chambers with 2 blowers each, each with 2 loading/unloading containers, year of manufacture 2011, including a wet separator. Lsdozb Dqhspfx Anxeag

Condition: used, Year of construction: 2020, operating hours: 87 h, functionality: fully functional, type of input current: three-phase, input voltage: 400 V, input current: 2 A, Equipment: type plate available, Used FINIMAC blasting cabinet/shot blasting machine for sale, model V1, manufactured in 2020 (serial number 2733), by FINIMAC (Vittuone, Milan, Italy). Second-hand equipment, with very little use – the internal counter registers approximately 87 operating hours. Laodozvdfmopfx Anxsg Cabinet with inspection window, two work gloves for handling parts, control pedal, pressure gauge, and its own control panel (main switch, emergency stop button, and hour counter). 400V three-phase power supply. Internal identification "M63". Condition: used equipment (not new/factory), functions normally, tested and operational.

Condition: like new (used), Year of construction: 2026, operating hours: 22 h, overall weight: 1,500 kg, We offer a demonstration table-type shot blasting machine – high-quality Czech production, using quality materials in its manufacture. Type – TSM1. Number of operating hours – 22. - Turntable diameter – 1000 mm - Maximum height of the blasted part – 550 mm - Overall machine height – 2750 mm - 1x blasting turbine – power consumption – 5.5 kW, turbine with a frequency converter for regulating the turbine rotation speed. The turbine has both left and right rotation directions, as needed. - Abrasive conveying system – power consumption – 0.75 kW. - Table rotation – power consumption – 0.75 kW - Total machine power consumption – 7 kW. The cabinet is lined with manganese steel. We also manufacture table-type shot blasting machines with a table diameter of 1500 mm. A significant advantage of the machine is the ability to change the turbine rotation direction to either right or left. Shot blasting equipment with CE certification. Lsdpfx Anjztvcloxeag Another advantage of the equipment is its high efficiency during shot blasting, quiet operation, low energy consumption, and the requirement for a small space for installation. In its category, this table-type shot blasting machine can be considered very well-designed. (Sandblaster, sandblasting, shot blasting, sandblasting equipment, shot blasting equipment, shot blasting machine). Blast machine.

Condition: new, Year of construction: 2026, functionality: fully functional, operating pressure: 6 bar, inner dimension width: 600 mm, inner dimension height: 400 mm, volume flow: 10,500 m³/h, Equipment: documentation/manual, New Wire Mesh Belt Shot Blasting Machine RB-600 AH 4 Description: The RB-600 AH 4 wire mesh belt shot blasting machine from ABRAZIV Kft. is designed for the economical and continuous surface treatment of small to medium-sized workpieces. The machine is suitable for descaling, derusting, cleaning, and surface preparation of aluminum and steel castings, forgings, and workpieces that cannot be shot blasted in bulk. The machine is manufactured to order and can be configured individually according to customer requirements. The RB-600 AH 4 is equipped with four ABR-380 shot blasting turbines. Two turbines are located above and two below the wire mesh conveyor belt. This arrangement ensures optimal coverage of the cross-section and a uniform blasting result. The turbines operate at an angle of approximately 70° to the direction of travel and have eight blasting blades and a pre-accelerator. The active blasting area is lined with highly wear-resistant manganese steel. Other internal areas are protected by wear-resistant, noise-reducing rubber. The wire mesh belt is made of highly wear-resistant spring steel. A closed blasting media circuit with a screw conveyor, bucket elevator, blasting media cleaning system, and dosing system ensures reliable operation. Three-layer rubber curtains reduce blasting media leakage. Laodszkivtepfx Anxsg An adjustable high-pressure blow-off system cleans the workpieces after the blasting process. The extraction and filter system with cartridge filters achieves a dust emission of max. 3 mg/m³. Technical Data Passage Passage width: 600 mm Max. workpiece height: 400 mm Min. workpiece length: approx. 1,000 mm Shot Blasting Turbines Number: 4 Type: ABR-380 Turbine diameter: 380 mm Speed: 2,800 1/min Blasting media output per turbine: 120 kg/min Wire Mesh Conveyor Belt Load capacity: 500 kg/m Speed: 0–4 m/min Power Consumption Base machine: 45.5 kW Cartridge filter: 7.5 kW Compressed air: min. 6 bar Compressed air consumption filter: 12.5 m³/h Other Data Blasting media capacity: approx. 1,000 kg Blasting media grain size: 0.4–1.2 mm Extraction capacity: 10,500 m³/h Filter area: 252 m² Dust emission: max. 3 mg/m³ Electrical Data Mains voltage: 3 × 400 V Control voltage: 220 V Frequency: 50 Hz Optional accessories available Magnetic drum separator Frequency converter Automatic blasting media dosing Special paint finish Transport Assembly Commissioning Operator training Spare parts supply Maintenance and service Applications Aluminum and steel castings Forgings Small steel components Single and series components Descaling Derusting Cleaning Surface preparation Location / Production Lichtenfels (Germany) / Kecskemét (Hungary) As a manufacturer, we produce shot blasting machines individually according to customer requirements. Other sizes and special designs are available. We will be happy to provide you with a non-binding offer. Price on request

Condition: new, Year of construction: 2026, functionality: fully functional, air demand: 15 m³/h, pressure: 6 bar, compressed air connection: 6 bar, operating pressure: 6 bar, inner dimension width: 2,000 mm, inner dimension height: 650 mm, volume flow: 12,000 m³/h, tank capacity: 2,500 l, air pressure: 6 bar, suction capacity: 12,000 m³/h, New RB-2000 Conveyor Blast System Description: The RB-2000 conveyor blast system from ABRAZIV Kft. was developed for the economical surface treatment of steel sheets, profiles, tubes, and welded structures and is ideally suited for descaling, derusting, cleaning, and roughening steel surfaces. The system is manufactured to order and can be individually configured according to the customer's requirements. With a passage width of 2,000 mm and a workpiece height of up to 650 mm, the RB-2000 is particularly suitable for large and heavy workpieces. It offers maximum flexibility for demanding applications in steel construction, mechanical engineering, tank construction, and the metalworking industry. The RB-2000 is equipped with four high-performance ABR-500 blast turbines. Two turbines are arranged above and two below the conveyor, ensuring optimal coverage of the cross-section and a uniform blasting result. The inner surfaces of the blasting chamber are lined with highly wear-resistant manganese steel. Other areas are protected by wear-resistant rubber, which simultaneously reduces noise levels. A closed blasting media circuit with a screw conveyor, bucket elevator, blasting media cleaning, and dosing system ensures reliable and economical operation. All functions of the system are operated via a central control unit. In addition to automatic operation, a manual mode is also available for maintenance work. Technical Data Passage Passage width: 2,000 mm Min. workpiece length: approx. 1,500 mm Max. workpiece height: 650 mm Blast Turbines Number: 4 Type: ABR-500 Turbine diameter: 500 mm Speed: 2,600 1/min Blasting media flow rate per turbine: 150–300 kg/min Conveyor Load capacity: 1,500 kg/m Speed range: 0–4 m/min Power Requirements Base machine: 59–103 kW Cartridge filter: 15 kW Compressed air: min. 6 bar Compressed air consumption (filter): 15 m³/h Other Data Blasting media capacity: 2,500 kg Recommended blasting media grain size: 0.4–1.2 mm Extraction capacity: 12,000 m³/h Mains voltage: 3 × 400 V Control voltage: 230 V Frequency: 50 Hz Optional Frequency inverter Extended conveyors Automatic height scanning Automatic blasting media dosing Special paint finish Transport Assembly Commissioning Operator training Spare parts supply Maintenance and service Application Areas The RB-2000 is particularly suitable for: Steel sheets Laodpfx Anozikaqexjg Steel profiles Tubes Hollow profiles Welded structures Steel construction Mechanical engineering Tank construction Contract blasting operations Location / Manufacturing Lichtenfels (Germany) / Kecskemét (Hungary) As a manufacturer, we develop and produce our conveyor blast systems individually according to customer requirements. In addition to the RB-2000, other sizes and special versions are available. We will be happy to advise you on the design of the appropriate system and provide you with a non-binding offer. Price on request.

Condition: like new (used), Year of construction: 2022, operating hours: 11 h, functionality: fully functional, machine/vehicle number: 181070, Scope of supply for the overhead rail blast machine Laedpfx Aney Avh Nsxeg Blasting cabin: 100% manganese Transport system Y-rail: included Abrasive recovery hopper: included Automatic abrasive cleaning: included Automatic abrasive quantity control: included HMI: Siemens TP7 Remote access (via VPN): included Characteristics of the installed turbines Number: 2 units Drive power per turbine: 11.0 kW Speed control: included System characteristics Blasting tasks: surface finishing including cleaning, roughening, peening, derusting, descaling Workpiece designation: Various steel parts Coverage (%): depending on component Capacity (parts/hour): individual Abrasive (material and size): aluminum and aluminum-zinc abrasive or steel abrasive in various sizes possible Abrasive quantity (initial fill): approx. 1000 kg Workpiece material: steel Hook load: max. 450 kg Workpiece temperature: max. 80° C Workpiece height: 1300 mm Part diameter (min/max): 1100 mm Sound pressure level without soundproofing: approx. 85 - 90 dB(A) Optional offers: Dry filter including secondary filter EUR 18,880.00 Pipework 5m EUR 1,980.00 Technical data of the filter system: Type: dry filter Air flow capacity: 2,600 m³/h Filter surface area: 36 m² Residual dust concentration: ≤ 2.0 mg/Nm³ Residual dust concentration with after-filter: ≤ 1.0 mg/Nm³ Supervision and installation starting from EUR 3,500.00 The system is delivered in CE-compliant design. Exempted are linked systems or systems where essential components are added or modified by the customer. In such cases, AGTOS provides an installation declaration. Upon request, we are happy to send you a layout plan.

Condition: new, Year of construction: 2026, functionality: fully functional, pressure: 6 bar, compressed air connection: 6 bar, operating pressure: 6 bar, inner dimension width: 1,500 mm, inner dimension height: 450 mm, input voltage: 380 V, volume flow: 6,000 m³/h, tank capacity: 2,000 l, air pressure: 6 bar, Equipment: documentation/manual, New Conveyor Blast Machine RB-1650 Description: The RB-1650 conveyor blast machine from ABRAZIV Kft. has been developed for the economical surface treatment of steel sheets, profiles, tubes, and welded structures, and is ideally suited for descaling, derusting, cleaning, and roughening steel surfaces. The machine is manufactured to order and can be individually configured according to customer requirements. The RB-1650 is equipped with four high-performance ABR-400 blasting turbines. Two turbines are arranged above and two below the conveyor, ensuring optimal coverage of the cross-section and uniform blasting results. The inner surfaces of the blasting chamber are lined with highly wear-resistant manganese steel. Other areas are protected by wear-resistant rubber, which also reduces noise levels. A closed blasting media circuit with screw conveyor, bucket elevator, blasting media cleaning, and dosing system ensures reliable and economical operation. All functions of the machine are operated via a central control system. In addition to automatic operation, a manual mode is also available for maintenance work. Technical Data Passage Passage width: 1,650 mm Min. workpiece length: approx. 1,500 mm Max. workpiece height: 450 mm Blasting Turbines Number: 4 Type: ABR-400 Turbine diameter: 400 mm Speed: 2,600 1/min Blasting media output per turbine: 130 kg/min Conveyor Load capacity: 1,300 kg/m Speed range: 0–4 m/min Power Requirements Base machine: 44 kW Cartridge filter: 7.5 kW Compressed air: min. 6 bar Compressed air consumption (filter): 3.2 l/min Compressed air tank (filter): 250 l Other Data Blasting media capacity: 2,000 kg Recommended blasting media grain size: 0.4–1.2 mm Extraction capacity: 6,000 m³/h Mains voltage: 3 × 380 V Control voltage: 220 V Frequency: 50 Hz Optional Extras Frequency inverter Extended conveyors Automatic height scanning Automatic blasting media dosing Special coating Transport Assembly Commissioning Operator training Spare parts supply Maintenance and service Application Areas The RB-1650 is particularly suitable for: Steel sheets Steel profiles Tubes Hollow profiles Welded structures Steel construction Machine construction Tank construction Contract blasting operations Location / Production Lichtenfels (Germany) / Kecskemét (Hungary) As a manufacturer, we develop and produce our conveyor blast machines individually according to customer requirements. We will be happy to advise you on the design of the appropriate machine and provide you with a non-binding offer. Price Laedpozidyksfx Anxeg Price on request.

Condition: refurbished (used), functionality: fully functional, air demand: 6 m³/h, compressed air connection: 6 bar, warranty duration: 6 months, workpiece weight (max.): 800 kg, Fully Overhauled Rubber Belt Blasting Machine GH-4 For sale is a fully overhauled rubber belt blasting machine GH-4, professionally refurbished by the manufacturer ABRAZIV. This machine is ideally suited for deburring, descaling, cleaning, and surface roughening of castings, forgings, press parts, and other bulk goods. Its robust design and reliable blasting technology make it versatile for use in foundries, forging shops, and the metalworking industry. The machine has been professionally overhauled (refurbished) and is in perfect technical condition, like new. It is immediately available and can be inspected by appointment. Technical Data Blasting Chamber Rubber belt width: 1,300 mm Belt drum diameter: 1,150 mm Maximum batch weight: 800 kg Blasting media capacity: 800 kg Blasting Turbines Number of turbines: 2 Power per turbine: 11 kW Connection Values Lsdpfxszicuao Anxeag Electrical connection power: 27.5 kW Compressed air connection: 6 bar Compressed air consumption: 6 m³/h Extraction capacity: 5,500 m³/h Condition Fully overhauled (refurbished) Technically inspected Immediately available As the manufacturer, we can also offer you the following services, if desired: Transport Installation Commissioning Operator training Spare parts supply Maintenance and service Location: Kecskemét, Hungary Inspection is possible at any time by prior appointment. Price on request.

Year of construction: 1995, condition: excellent (used), MONORAIL HANGER SHOT BLASTING MACHINE WITH WETFILTER Designation: Monorail Hanger Shot Blaster Brand : Schlick Type: DHB 12/14 Workpieces ø: 1.200mm Workpieces High max.: 1.400mm Charge max. kg: 500kg Shot Wheel: 3 Pieces with 7,5kw with Drivers Consisting of: - Monorail Hanger Shot Blaster Typ: DHB 12/14 Lasdpfxjd Hp Sqs Anxjg - O-Hanger System with Workpieceshangers - Main Panel - Wet Filter Wir bieten auch Ersatzteile für Rösler, Schlick, Wheelabrator, Gietart usw. Strahlanlagen an! We can offert for spare Parts for Rösler, Shot Blasting Machines!

Condition: new, Year of construction: 2026, functionality: fully functional, pressure: 6 bar, warranty duration: 60 months, inner dimension width: 5,000 mm, inner dimension length: 10,000 mm, inner dimension height: 5,000 mm, filter area: 250 m², volume flow: 16 m³/h, Equipment: documentation/manual, lighting, Blasting house *up to 5 years warranty* for all blasting media made of a steel construction/isopanels with filter system, air circulation system, blasting media preparation, pressure blasting pot 200l automatically refilling, blasting hose with dead man's control, breathing air system, LED lighting, wall cladding 70shore 4mm fabric rubber, sweep pit bucket elevator. Blast media recirculation via sweeping pit with bucket elevator can be upgraded to cross conveyor screw with dosing hood across the entire width as sweeping pit or complete flat conveyor floor. Workpiece transport can be retrofitted: blasting carriage with track bed, crane system, crane roof opening, etc. For glass bead blasting for stainless steel, can be upgraded with the correct magnetic drawer or electrically driven magnetic drum separator. When blasting with 2 different blasting media (ferritic and mineral), upgradeable with magnetic drum separator, final magnetization stage and second air separator for blasting media separation, cleaning. Safety equipment: Emergency lighting battery, emergency stop switch in the cabin and outside, viewing window to the blasting chamber, door/door limit switch, dead man's control, pressure vessel quick venting Warranty up to 5 years on various components. Ledpfx Aeu Ey Dlsnxeag 50 years of experience and more than 3000 systems in blasting machine construction

Condition: new, Year of construction: 2026, Shot blasting booth components: flat conveyor bed, transverse screw conveyor, bucket elevator, dust extraction system, screen, shot media hopper, shot blasting machine, filter system, fan, air ducts, lamella extraction hood, inlet box, electrical control system as a kit without assembly. Alternatively, the system components can also be assembled by our specialized technicians in your premises. Ljdpfx Ashc T Nlenxjag

Condition: new, Year of construction: 2026, Trough belt, centrifugal impeller, shot blasting system, 7.5 kW, directly driven impeller turbine with 8 impeller blades. Belt width 700 mm and diameter 600 mm. Lasdpfx Aneg S Rt Esxeg

Condition: new, Year of construction: 2026, Pressure blast cabinet for internal pipe blasting with turntable and manual blasting operation - Filter system - Turntable with prism for pipe support placement - Driven internal pipe lance Lsdpfjyn Inwex Anxoag - Program storage: travel path, feed rate, blow-off function - External blasting nozzle with oscillation (option)

Condition: new, Year of construction: 2025, Trough belt, impeller wheel, shot blasting system, 11 kW, directly driven impeller turbine with 8 throwing blades. Belt width 1000 mm and diameter 900 mm. Lajdshvikujpfx Anxsg