Used Welding Extraction for sale (9,475)

Condition: good (used), Year of construction: 1991, Welding fume filter, Tebaron, TE 1200 – used - : Price ex location: €650 (net) Manufacturer: ISI Industrie-Produkte GmbH Model: TE 1200 Year of manufacture: 1991 380V, 1.1kW, 2.6A, IP54 Bjdpfjyhxl Rex Aa Isdh Condition: good Availability: immediately Location: Waltrop

Condition: good (used), Year of construction: 2014, Dustomat P-20 Mobile Dust Extractor with Flexible Extraction Arm The ESTA DUSTOMAT P-20 mobile dust extractor is a unit specifically designed for professional dust extraction, meeting the highest air purity standards in industrial and commercial settings. With its robust construction, compact design, and ease of use, this model offers a reliable and efficient solution for removing both fine dust and coarse particles. Compared to similar dust extraction systems, the unit stands out due to its high air volume flow, generously sized dust collection bin, and the long service life of its filter elements. Areas of Application: Single- and multi-station extraction in industry and skilled trades Free-flowing dusts Dry chips/shavings Particularly suitable for wood dust Welding fumes and metal dust Metal chips and grinding dust Key Features: Automatic jet-pulse filter cleaning Integrated pre-separator (baffle plate) Cleanable permanent filter cartridges (Dust Class M) Test certificates: H3 (HO 113002); GS (HO 113001) Testing standard: GS-HO-07 (01/2010) Residual dust content H3 < 0.1 mg/m³ Your benefits at a glance Compact and powerful Low operating costs Easy dust disposal Can be used as a mobile single-workstation extractor or a central extraction system Suitable for almost all types of dust, especially wood dust* Optional certification mark available for special applications Technical data: Manufacturer: Esta Type: P-20 Bsdpfx Aoz E D D Eea Isdh Supply voltage: 400 V, 50 Hz Drive power: 3.0 kW Rated current: 6.4/16 A Nominal air flow: 1,832 – 2,600 m³/h Negative pressure: 2,300 – 3,400 Pa Compressed air (max.): 4 – 6 bar Filter area: 20 m² Number of filter elements: 2 Filter cleaning: Jet-Pulse Intake nozzle: 180 mm Dust container: approx. 200 liters Dimensions (L x W x H): 1,650 x 830 x 1,980 mm Weight: 370 kg Year of manufacture: 2014 "Everything from a single source: We would be happy to offer you suitable bank financing for your project." komplett-konzept.leasingo.de Find more items – new and used – in our shop! International shipping costs on request!

Condition: good (used), Flexible extraction arm for welding smoke filter, welding smoke extraction -Welding fume extraction pipe: flexible -Tube: Ø 325 mm -Total length: 2300 mm -Transport dimensions: Ø 325 x 240 mm Bdodevck Hzjpfx Aa Ish -Weight: 5.4 kg

Condition: excellent (used), Year of construction: 1975, functionality: fully functional, input voltage: 380 V, input frequency: 50 Hz, Equipment: type plate available, manufacturer: PECO N30 rated power: 40/80 kVa KB 1970 production can weld in 2 directions rather Bdodpfx Asxlr Tdea Ieh water cooled, air operated Kb 32 A can weld 500mm in length voltage: 380v 50 Hz

Condition: as good as new (ex-display), Year of construction: 2025, operating hours: 3 h, functionality: fully functional, type of input current: three-phase, total height: 1,420 mm, total width: 560 mm, total length: 1,100 mm, input voltage: 400 V, ground cable length: 4,000 mm, overall weight: 100 kg, warranty duration: 12 months, type of cooling: water, hose package length: 4,000 mm, electrical fuse: 32 A, DGUV certified until: 08/2027, welding power (max.): 19 kVA, open-circuit voltage: 61 V, welding current at 60% duty cycle: 470 A, welding current at 100% duty cycle: 420 A, space requirement height: 1,770 mm, space requirement width: 600 mm, space requirement length: 1,250 mm, input current: 30 A, protection type (IP code): IP23, welding current (min.): 3 A, welding current (max.): 500 A, input frequency: 50 Hz, Equipment: documentation/manual, type plate available, We are offering this Böhler Welding TERRA NX 500 PME Rockstar welding machine, a showroom model from 2025, for sale. The package includes a wire feeder, a 1.5m intermediate hose set, a 4m UP/Down welding torch, and a ground cable. Bedpfx Aajzvmi Ij Ijdh If you have any questions or require further information, please feel free to send us a message or call us.

Year of construction: 2000, condition: good (used), Welding fume extractor, dust collector, self-cleaning filter, pneumatic, vacuum-based, brand: ESTA Model: SRF P13 JET For welding, grinding, sandblasting, and all types of dry dust. The filter is pneumatically cleaned with pulses of compressed air during operation, resulting in high device efficiency. Fan power: 3 kW Capacity: 1850 m3/h Filtration area: 15 m2 Vacuum: 4300 Pa Inlet diameter: 2 x 160 mm Bdsdpfxeirt Amo Aa Ioh Year of manufacture: 2000

Condition: excellent (used), Year of construction: 2010, Tekol / Trumpf Laser Welding System Tekol LAP S4 with TRUMPF TruPulse 44 and TBH GL230 Extraction Unit Description: For sale is a professional laser welding system Tekol LAP S4 equipped with an integrated TRUMPF TruPulse 44 pulsed Nd:YAG laser and TBH GL 230 extraction and filter unit. This system is an enclosed precision laser welding station designed for fine, pinpoint, and low-distortion welding of metal components. The pulsed laser enables highly controlled heat input, clean weld spots, and reproducible results. Ideal for precision engineering, toolmaking, repair welding, prototyping, and small series production. Enclosed safety housing with protection system, control panel, rotary indexing table, and extraction/filter system. Technical Data – Tekol LAP S4 Operating voltage: 400 V ~ N / PE Mains type: 3~ 400 V, 50 Hz Nominal current: 32 A (approx. 22.5 kVA) Control voltage: 24 V DC Dimensions: Length: approx. 1330 mm, Depth: approx. 1300 mm, Height: approx. 2030 mm Weight: Machine: approx. 800 kg Travel: X-axis: approx. 160 mm Y-axis: approx. 100 mm Z-axis: approx. 100 mm Rotary indexing table: 2-station Bedpfx Aaozizpce Iodh Technical Data – Laser TRUMPF TruPulse 44 Laser type: Nd:YAG pulsed laser Wavelength: 1064 nm Max. average power: 42 W Min. pulse power: 201 W Max. pulse power: up to 3 kW Pulse duration: 0.2 – 50 ms Max. pulse energy: 30 J Max. pulse frequency: up to 900 Hz Beam parameter product: 16 mm·mrad Technical Data – Extraction Unit TBH GL 230 Voltage: 230 V / 50–60 Hz Power: 0.36 kW Free-blowing air volume: approx. 390 m³/h Effective air volume: approx. 330 m³/h Max. negative pressure: 4000 Pa Sound level: approx. 51 dB(A) Weight: approx. 40 kg Multi-stage filter system: - Pre-filter - Particle filter - Activated carbon filter Total weight approx. 900 kg Condition: used Scope of supply: (see photos) - Tekol LAP S4 laser welding system - TRUMPF TruPulse 44 laser unit - TBH GL 230 extraction unit - Documentation / folders / data carriers - Keys and accessories as shown (Specifications and technical details are subject to change and errors!) If you have further questions, please feel free to contact us by phone.

Condition: refurbished (used), Year of construction: 2011, functionality: fully functional, year of last overhaul: 2011, Equipment: CE marking, documentation/manual, Friction welding machine from the manufacturer MTI, equipped for welding turbochargers. The machine is equipped with: Bdjdpfsv Uzf Ejx Aa Ioh - Siemens PLC, CPU 315, - Rexroth hydraulics - German user interface - CE marking Upon request, this machine can also be converted for many other welding tasks. We can also produce your friction welding joints, up to 300 tons of clamping force. Please contact us for further information!

Condition: excellent (used), Year of construction: 2000, functionality: fully functional, machine/vehicle number: 52.693.00, feed length X-axis: 1,525 mm, feed length Y-axis: 1,525 mm, feed rate Y-axis: 1 m/min, feed rate Z-axis: 1 m/min, Welding Robot – Fully Equipped Vertical Bend Arm Robot 6 axes Reach: 1525 mm Equipped with automatic welding gun, type: DIX MALZ 520 Wire feed device, manufacturer: FRONIUS, type: ROB.VR1500 DINSE-ZA Includes 2 rotary welding tables Plate dimensions: each 1200 × 750 mm Pneumatically driven cleaning device Positioning and straightening station for the torch Current source, manufacturer: FRONIUS, type: welding device TPS 4000 Supplied with technical documentation Note: The machine can be transported on a standard truck. Technical Attributes Bsdpfx Aerl S Ufoa Iedh Dimensions (L × W × H): approx. 4700 × 3500 × 3800 mm Weight: approx. 5000 kg Year of construction: 2000

Condition: like new (used), Year of construction: 2020, operating hours: 200 h, functionality: fully functional, arm reach: 1,437 mm, For sale: Panasonic robotic TIG welding workstation purchased from ValkWelding. Workstation includes: Panasonic TM 1400 G3 robot (6 axes, reach 1437 mm, payload 6 kg), two-axis L positioner PD1000/500, TIG welding unit Tetrix 352 AC/DC Synergic CW, accessories, and safety equipment. This workstation is distinguished by its ability to safely weld not only steels and stainless steels but also aluminum. The process is highly synchronized with wire feeding and is capable of seam tracking and adapting to changes in arc height. A very versatile device. I am selling this system because our original capacity expectations have not been met (we don’t have work in the hundreds or thousands of pieces). Over its entire lifetime (approximately 5 years), the workstation was powered on for around 200 hours and did actual test welding for less than an hour in total. It is practically in like-new condition. It would be a pity for it to just “collect dust.” All support has been directly provided by ValkWelding. In case of sale, they will arrange installation, commissioning, and personnel training as agreed. Bjdpey Efmgefx Aa Iodh

Condition: used, functionality: unexamined, type of input current: three-phase, total height: 3,000 mm, total length: 3,000 mm, input voltage: 380 V, type of cooling: water, welding current at 60% duty cycle: 1,000 A, welding current at 100% duty cycle: 800 A, welding current (min.): 250 A, welding current (max.): 1,250 A, Used ESAB submerged arc welding (SAW) system for sale, manufactured by ESAB AB / ESAB Welding Equipment AB, Sweden. The system is designed for mechanized submerged arc welding (SAW), including tandem welding AC/DC. It is suitable for welding long, straight seams, beams, profiles, sheet metal structures, cylindrical products, vessels, tanks, and heavy welded structures. Manufacturer: ESAB AB / ESAB Welding Equipment AB Country: Sweden Process: SAW – Submerged Arc Welding Type: Mechanized welding system / tandem welding system Inscription: UP Tandemschweißen Welding: DC + AC with ESAB power sources Welding head: Available, with flux hopper Work beam / chassis: Long ESAB welding beam / tractor Condition: Dismantled / stored, available for inspection Welding power sources ESAB TAE 800 Parameter Data Model ESAB TAE 800 Range 300 A / 28 V – 800 A / 44 V 100% duty cycle 800 A / 44 V 60% duty cycle 1000 A / 44 V Power supply 400 / 415 / 460 / 500 V, 50 Hz Protection IP23 ESAB LAE 1250 Parameter Data Model ESAB LAE 1250 Type Welding rectifier Range 250 A / 24 V – 1250 A / 44 V 100% duty cycle 1250 A / 44 V Power supply 220 / 380 / 415 / 500 V, 50 Hz Protection IP22 Weight 490 kg Data from the tandem welding plate Mode Current Voltage Bodpfx Aozimbkea Iedh Direct current / DC 520 – 580 A 28 – 30 V Alternating current / AC 550 – 620 A 34 – 36 V Travel speed: 680 – 800 mm/min. Included components: long ESAB welding beam / chassis; welding head; flux hopper; cables and hoses; control boxes; ESAB TAE 800; ESAB LAE 1250; submerged arc welding equipment. Condition: The system is used and is currently dismantled / stored out of active operation. Visible signs of use, dust, dirt, and storage are present. It is sold in its current condition, with the equipment shown in the pictures. On-site inspection and technical verification by the buyer are recommended before purchase.

Condition: excellent (used), Here we offer you a Bielomatik laser welding system. Bielomatik laser welding system Machine description: The laser unit with integrated cooling for the laser is located in the lower left part of the machine frame. The tools are mounted on a 2-station rotary table that rotates 180 degrees with each cycle. In the middle part of the machine frame, there is the working area with the welding station, the tool (on the rotary table), and the clamping device for the product. The control cabinet is installed at the rear. The welding station is protected against the loading/unloading area with a laser-safe enclosure. The welding laser (the laser power supply) is switched off when a maintenance door is opened. The loading and unloading of the welding parts is done manually. The welding process runs automatically. Laser type: YLR-300-AC-Y11/IPG The cell was used for laser welding of various plastic parts (front frames). For components with dimensions of approximately 460 x 280 mm. Basic data Machine equipment: 1 complete machine frame with enclosure, substructure, and safety devices, painted Bdodpfxozgaazo Aa Ioh Adjustable machine feet, designed for transport with a forklift. 3 manual maintenance doors in the laser-safe processing area, each secured with a safety door switch with interlock. 4 manual maintenance doors below the machine table. The control cabinet is permanently mounted on the rear of the machine. Laser system manufactured by IPG. 1 fiber laser, 300W cw, at the fiber optic end, 1070nm, completely air-cooled. 1 power supply for the laser unit, target beam laser, and fiber optic cable. 1 Vario-Scan for 3D welding contour. 1 scanner - 20 aperture. Optics, F-Theta lens, focal length determines the processing field and processing distance. 2x base tool, tool coding with transponder. Clamping/tensioning system for holding a mask with absolute encoder. with pneumatic clamping system for controlled pressing of each welding part. Pneumatic air shower for protection of the lens housing. Microbox PC427B incl. RTX (Siemens). Pre-installed software, Siemens S7 PLC. Profibus, Profinet, Ethernet, RS232 interface. Touch panel 15" for operation and input of data/parameters. Machine lighting. Connection flange for external extraction system. Machine data: Dimensions: Machine W x D x H: approx. 2330 x 2350 x 2500mm Control cabinet: Permanently screwed to the machine frame. Area required W x D: 5400 x 5400mm Technical data: Power supply: Number of phases/rated voltage 3x400V 50Hz Connected load 5KVA Fuse rating: 16A Exhaust: Nominal size ∅160 Airflow rate 500-1000 m³/h Weight approx. 2000 kg Type: K3633/023 Condition: used (Changes and errors in the technical data are reserved!) We are happy to answer any further questions you may have by telephone.

Year of construction: 1988, condition: good (used), Radial fan, high-pressure radial fan, dust extraction blower, exhaust gas extraction, welding fume extraction, extraction, extraction blower, fan, pressure blower, vacuum blower, ventilation blower, blower, radial blower -Manufacturer: Norfab, radial fan, extraction blower -Type: E 450 L 65 -Motor: Schorch 18.5 kW 2935 rpm -Volume flow rate: 16000 m³/h -Total pressure: 3000 Pa -Inlet connection: Ø 450 mm -Outlet connection: Ø 500 mm -Fan wheel: Ø 640 x 290 mm -Protection class: IP 54 -Dimensions: 1500/1150/H1270 mm -Weight: 478 kg Bdsdpfxsz Hvv Ae Aa Ioh

Condition: new, table length 3000 mm table width 1500 mm table height 200 mm weight of the machine ca. 1,6 t The Professional 750 3000x1500x200 mm table has a diagonal hole arrangement on the table top and a parallel hole arrangement in the 50 mm grid on the sides. The holes have a diameter of 28 mm. The table has a material thickness of about 24.5-27 mm and is made of high quality steel S355J2 + N. Grid lines at intervals of 100 mm make it easier for you to set up your device. Bdodpfx Aaegvkc Ns Ijh The welding tables are provided with scale as standard. Including 6x feet basic equipment 650 Article no. 280858.X

Condition: new, table length 3000 mm table width 1500 mm table height 200 mm weight of the machine ca. 1,6 t Bdedpfjgvkc Tsx Aa Ish The table Professional Extreme Article no. 4-280040.X7 2400x1200x200 mm has a hole arrangement in the 100 mm grid on the table top and a parallel hole arrangement in the 50 mm grid on the sides. The holes have a diameter of 28 mm and the table has a material thickness of about 24.5-27 mm. The table top is made of hardened tool steel. The low-loaded sidewalls are still made of steel S355J2 + N for cost reasons. Grid lines at intervals of 100 mm make it easier for you to set up your device. The welding tables are provided with scale as standard. Including 6x feet basic equipment 650 Article no. 280858.X

Condition: new, table length 2400 mm table width 1200 mm table height 200 mm Bdodpogvkfyjfx Aa Ieh weight of the machine ca. 1,0 t The table Professional Extreme Article no. 4-280030.X7 2400x1200x200 mm has a hole arrangement in the 100 mm grid on the table top and a parallel hole arrangement in the 50 mm grid on the sides. The holes have a diameter of 28 mm and the table has a material thickness of about 24.5-27 mm. The table top is made of hardened tool steel. The low-loaded sidewalls are still made of steel S355J2 + N for cost reasons. Grid lines at a distance of 100 mm make it easier for you to set up your device. The welding tables are provided with scale as standard. Including 4x feet Basic equipment 650 Article no. 280858.X

Condition: excellent (used), dimensions 579 x 760 x 1800 filter area 15 m2 0.9 kW 1470 Pa Bdodpfoz Alm Sex Aa Ioh 900 m3/h

Condition: used, manufacture Nelson Type FSE 100 / FSE 500 In our assessment, the machine is in good used condition and can be inspected under power by appointment. Includes welding head, hoses, and control cabinet. 15 x Nelson FSE 100 + N4 Inverter Bodoy Ihbxopfx Aa Iodh 5 x Nelson FSE 500 + N4 Converter Price per unit. Accessories, tools, and clamping devices shown are only included if specifically stated in the additional information. Technical data and specifications are subject to change without notice. Prior sale reserved.

Condition: used, length 850 mm height 975 mm total power requirement 10,5 kW weight of the machine ca. 175 kg dimensions of the machine ca. 850 x 450 x 1575 mm Technical data Continuously adjustable range [A] 10-300 Duty cycle (ED) at Imax. (10 min) [%] 80 Welding current at 100% ED [A] 270 No-load voltage [V] 75 Mains connection [V] 3/PE 400 Continuous power at 100% ED [kVA] 12.2 Fuse protection (slow-blow) [A] 20 Power factor [cos phi] 0.98 Insulation class H Torch cooling water-cooled Protection class IP 23 Wire diameter steel and stainless steel [ø mm] 0.8/1.0 Wire diameter aluminum 1.0/1.2 Sound level according to DIN 45635 [db (A) 1 m] 68 Equipment: Bodpfxevuz Sre Aa Ijdh - without accessories

Condition: ready for operation (used), Year of construction: 1999, functionality: fully functional, input voltage: 400 V, input frequency: 50 Hz, total height: 3,500 mm, total length: 20,000 mm, total width: 2,500 mm, overall weight: 12,000 kg, Equipment: documentation/manual, The Modesta exhaust system is in good condition, is still installed, and can be seen in operation. It includes two automatic diverter valves, allowing you to choose whether to discharge into the bunker/silo or into two containers. Bedpfjx Ezlfsx Aa Isdh

Condition: as good as new (ex-display), Year of construction: 2025, Special price *available upon request New: With the frequency converter option, up to 45% state funding is possible. Combination of: mütek briquetting press MPP 60 + extraction unit MMJET 350 *Approved for indoor installation *Both individual machines are fully manufactured and in stock; they only need to be connected to each other 1. Technical data of briquetting press: Our best-selling briquetting press, a classic. + Proven, simple technology for extremely low failure rates + 25 years of experience, continuous development, and know-how + Several thousand machines in operation with satisfied customers + Excellent price-performance ratio Commodity code: 84793010 Briquette diameter: 50 mm Front bushing: 50 mm Briquette stroke max.: 40 mm Briquette stroke opt.: 40 mm Throughput (material-dependent): up to 60 kg/h* *depending on the bulk density *based on a bulk density of 200 kg per cubic meter Motor power: 5.5 kW, Bsdsd Su Hxspfx Aa Ijdh 400 volts / 50 Hz / 3-phase Overall dimensions of the system: 2.2 x 1.1 x 2.8 m (L x W x H) Height - 2.8 m (special container) Delivery in 2 components possible Weight: approx. 1200 kg Oil quantity: 110 liters Silo diameter: 1000 mm Pump: 27 liters Hydraulic pre-compressor Option cooling press clamp: no Option cooling hydraulic oil: yes Option level monitoring: yes CE compliant 2. Technical data of clean air extraction unit MMJET 350: Extraction port diameter: 350 mm Motor: 11 kW Extraction nozzle on the left (when standing in front of the dust bin) Residual dust content:

Condition: good (used), Welded frame, used Manufacturer: CREA-SWISS Technical Data Brand: CREA-SWISS Bdsdpjy At A Dsfx Aa Ioh Max. frame size: 3,000 x 2,400 mm Min. frame size: 470 x 610 mm Profile height: up to 115 mm Height tolerance compensation: from -1 mm to +1 mm Dimensions: L 3.6 x W 1.5 x H 2.0 m Weight: 280 kg Advantages - Single-operator device: set external dimensions, insert profiles, adjust height differences, and weld completely on both sides, all by one person - Precise adjustment for accurate frame construction - Rotatable around the longitudinal axis - Fully welded in a single clamping - Fine adjustment of miter edges - Mobile workstation on castors - Suitable for all types of frames (steel windows, fire doors, or angle steel frames) All information provided without guarantee. A demonstration is possible at any time in our showroom.

Condition: used, MIG/MAG pulsed gas shielded welding machine, EWM, type Phoenix 301 Progress Puls Force Arc Serial No. Art. No.: Year of manufacture: 2007 Power: 300 amps = 60% duty cycle 250 amps = 100% duty cycle Adjustment range: stepless Open-circuit voltage: approx. 29 volts Bdedjz Afhiepfx Aa Ioh Mains connection: 400 volts, 50 Hz, 16 amps plug - Digital display for voltage and current - Pulse function - Various welding programs selectable - 2-cycle, 4-cycle and spot welding - Water-cooled - 4-meter hose package, NEW, with central connection - Welding gas pressure regulator, NEW - Welding machine equipped with 1.2 mm welding wire Space requirement L x W x H: 900 x 660 x 1550 mm Weight: approx. 160 kg Good condition - fully functional - ready for demonstration

Condition: new, Year of construction: 2026, functionality: fully functional, load capacity: 3,000 kg, Column Lifting Rotating Device with 3-Ton Capacity Protec Syncrolift Rotating Device/Positioner Double Column, Wireless and Manual Remote Control Column Adjustment with Two Travel Modes Bsdowih Dcepfx Aa Iedh Load Capacity 3000 kg, 360° Minimum Working Height: 600 mm Maximum Working Height 1500 mm Speed 0.5 rpm Clamping Plate Diameter 600 mm Rotation 0.75 kW Torque 5180 N-m 2 to 10-Ton Capacity Available Upon Request

Condition: new, 0,6 t -- mm -- mm consisting of: 30x article no. 2-280510 Quick release pin short - Clamping of 2 components - burnished - with twist lock 8x article no. 2-280410.N Universal stop 150 L - nitrided - nitrided - as standard with fine scaling on both sides 4x article no. 2-280420.N Universal stop 225 L - nitrided - nitrided - as standard with fine scaling on both sides 8x article no. 2-280110.G Bdedpfx Ajgvq Hlsa Ijh Stop and clamping angle 175 L - cast / black oxide finish - Hole / elongated hole - Cast / burnished 2x article no. 2-280162.N Stop and clamping angle 500 G - nitrided - Left stop - nitrided 1x article no. 2-280166.N Stop and clamping angle 750 G left - nitrided - Left stop - nitrided 1x article no. 2-280167.N Stop and clamping angle 750 G right - nitrided - stop on the right - nitrided 1x article no. 2-280910 Tool trolley - painted - Permissible total weight 240 kg 1x article no. 2-280164.N Stop and clamping angle 500 G with turning angle left - Left stop 1x article no. 2-280165.N Stop and clamping angle 500 G with right angle of rotation - stop on the right - Cast / nitrided 4x article no. 2-280152.N Stop and clamping angle 300 G - nitrided - Left stop - nitrided 8x article no. 2-280651.1. Prism Ø 60 135 ° with screwed-in collar - aluminum - aluminum - M16 thread for e.g. B. Prism Extension Item No. 280649 16x article no. 2-280610.N Professional screw clamp - nitrided - nitrided 6x article no. 2-280630.N Professional screw clamp 45 ° / 90 ° - nitrided - nitrided 4x article no. 2-280426.N Universal stop 300 - nitrided - 3 system holes - nitrided