SSWeld Pvt. Ltd.
This supplier has not provided a Company Introduction yet..
Address:Mira-Bhaindar Road
Product/Service:Welding Inverter,Air / Oil cooled trasformer,Welding Rectifier,MIG / MAG Co2 Welding machine,Submerged Arc Welding (SAW) Machine,Plasma Cutting Machine,Gas Cutting Machine,Spot Welding Machine,Projection Welding Machine,Engine Driver Arc Welder,Electrodes Drying Oven,Welding Rotator,SAW Column Boom , Welding Inverter Machine,Custom Metal Fabrication,S & S Welding,Tank Rotator,Tank Rotator,Welding Positioners,Welding Lathe,Welding Positioner,Engine Driven Arc Welder,Electrode Drying Oven,Electrode Drying Oven,Electrode Drying Oven,Column and Boom machine,Mini-Ostrich Portable Shape Cutting Machine,OXY-1 LINEAR GAS CUTTING MACHINE,Projection Welding Machines,Spot Welding Machines,Plasma Cutting Machines,Submerged Arc Welding Systems (SAW),INVERTER MIG / CO2 WELDING MACHINES,MIG / CO2 Welding Machine,TIG ARGON / ARC Welding Machine,DC Welding Rectifier,Stud Type Welding Machine,MOSFIT Based MMA / TIG Welding Machine,Air / Oil Cool Arc Welding Transformer,Inverter MMA / TIG / MIG-CO2 / Plasma cut Welding Machines,,Welding Inverter,Air / Oil cooled trasformer,Welding Rectifier,MIG / MAG Co2 Welding machine,Submerged Arc Welding (SAW) Machine,Plasma Cutting Machine,Gas Cutting Machine,Spot Welding Machine,Projection Welding Machine,Engine Driver Arc Welder,Electrodes Drying Oven,Welding Rotator,SAW Column Boom , Welding Inverter Machine,Custom Metal Fabrication,S & S Welding,Tank Rotator,Tank Rotator,Welding Positioners,Welding Lathe,Welding Positioner,Engine Driven Arc Welder,Electrode Drying Oven,Electrode Drying Oven,Electrode Drying Oven,Column and Boom machine,Mini-Ostrich Portable Shape Cutting Machine,OXY-1 LINEAR GAS CUTTING MACHINE,Projection Welding Machines,Spot Welding Machines,Plasma Cutting Machines,Submerged Arc Welding Systems (SAW),INVERTER MIG / CO2 WELDING MACHINES,MIG / CO2 Welding Machine,TIG ARGON / ARC Welding Machine,DC Welding Rectifier,Stud Type Welding Machine,MOSFIT Based MMA / TIG Welding Machine,Air / Oil Cool Arc Welding Transformer,Inverter MMA / TIG / MIG-CO2 / Plasma cut Welding Machines,
Oupu Machinery Co., Ltd
Oupu is a leading NC cutting machine manufacturer and supplier in China. With the professional engineers, technicians service team, we can provide you best quality cnc plasma machine&welding China with most competitive cost. We produce several models Flame Cutting Machine ,Bench ,CNC Plasma & Welding ....
Address:XinYan Road
Product/Service:Cnc Plasma Cutting Machine,Protable Cutting Machine,Mini Cutting Machine,Welding Machine , Plasma Cutting Machine,TIG welding machine,Cnc Strip Cutting Machine,ZX5 Silicon Controlled Manual Arc Welding Machine,cnc plasma cutting machine cnc01,Welding Machine KH,CNC high precision plasma cutting machine,Cnc Flame Cutting Machine/Plasma Cutting Machine,Portable Cutting Machine/ Mini Plasma Cutting Machine,PLASMA CUTTING MACHINE,Cnc underwater cutting machine/Plasma Cutting Machine,plasma cutting machine,CNC Plasma Cutting Machine CNC02,CNC Plasma Bevel Cutting Machine,Baby car seat,Protable Cutting Machine/ Mini Cutting Machine,Baby car seat,WS-Soft Switch Inverter IGBT DC Argon Arc Welding Machine,CNC Plasma Cutting Machine,Portable Cutting Machine,Inverter Welding Machine MMA,WSM Digital Soft Switch Welding Machine,HB/ZHB Automatic Welding Positioner,Mini Cutting Machine /CNC Portable Cutting Machine,Hypertherm Plasma parts,plasma cutting machine cnc 01/ cnc plasma cutting machine,cnc plasma cutter,CNC Plasma Cutting Machine CNC01,CNC Bench Cutting Machine CNC02,WSME-Soft Switching/AC/DC Arc Welding Machine,CNC01 Plasma Cutting Machine/CNC Plasma Cutting Machine,CNC Plasma Cutting Machine CNC02/ Plasma Cutting Machine,,Cnc Plasma Cutting Machine,Protable Cutting Machine,Mini Cutting Machine,Welding Machine , Plasma Cutting Machine,TIG welding machine,Cnc Strip Cutting Machine,ZX5 Silicon Controlled Manual Arc Welding Machine,cnc plasma cutting machine cnc01,Welding Machine KH,CNC high precision plasma cutting machine,Cnc Flame Cutting Machine/Plasma Cutting Machine,Portable Cutting Machine/ Mini Plasma Cutting Machine,PLASMA CUTTING MACHINE,Cnc underwater cutting machine/Plasma Cutting Machine,plasma cutting machine,CNC Plasma Cutting Machine CNC02,CNC Plasma Bevel Cutting Machine,Baby car seat,Protable Cutting Machine/ Mini Cutting Machine,Baby car seat,WS-Soft Switch Inverter IGBT DC Argon Arc Welding Machine,CNC Plasma Cutting Machine,Portable Cutting Machine,Inverter Welding Machine MMA,WSM Digital Soft Switch Welding Machine,HB/ZHB Automatic Welding Positioner,Mini Cutting Machine /CNC Portable Cutting Machine,Hypertherm Plasma parts,plasma cutting machine cnc 01/ cnc plasma cutting machine,cnc plasma cutter,CNC Plasma Cutting Machine CNC01,CNC Bench Cutting Machine CNC02,WSME-Soft Switching/AC/DC Arc Welding Machine,CNC01 Plasma Cutting Machine/CNC Plasma Cutting Machine,CNC Plasma Cutting Machine CNC02/ Plasma Cutting Machine,
Kumkwang Tech Co.,Ltd
We, Kumkwang Tech Co.,Ltd, which has being grown with the local structural steel industry are endeavoringto approach closer to customers first alms and intentions all time, never content largest sales accomplishment in market. Based on versed englineering service team acknowledged by a variety of ....
Address:785-203, Seokpo-ri, Jangahn-myeon,
Product/Service:cnc plasma cutting machine,cnc gas cutting machine,H beam assembling machine,H beam straightening machine,band saw machine,drilling machine,puching machine,welding machine,welding positioner,conveyoe system,H beam drilling machine,bevelling machine , GAS CUTTING MACHINE,AUTOMATIC WELDING MACHINE,PC CNC PLATE DRILLING MACHINE,PC CNC PUNCHING MACHINE,NC BAND SAW MACHINE,H BEAM ASSEMBLING MACHINE, SPOT WELDING MACHINE,H BEAM STRAIGHTENING MACHINE,CNC PLASMA CUTTING MACHINE,,cnc plasma cutting machine,cnc gas cutting machine,H beam assembling machine,H beam straightening machine,band saw machine,drilling machine,puching machine,welding machine,welding positioner,conveyoe system,H beam drilling machine,bevelling machine , GAS CUTTING MACHINE,AUTOMATIC WELDING MACHINE,PC CNC PLATE DRILLING MACHINE,PC CNC PUNCHING MACHINE,NC BAND SAW MACHINE,H BEAM ASSEMBLING MACHINE, SPOT WELDING MACHINE,H BEAM STRAIGHTENING MACHINE,CNC PLASMA CUTTING MACHINE,
S.I.F.F. ELEKTROMEKANIK SANAYI VE TICARET LTD STI
Thanks to years of experience, well trained staff and advanced technology, SIFF can offer innovative solutions improve customer's productivity, production quality as industrial environment. 20 in this specialty business has always been based on welding that meet or exceed customers joining ....
Address:Erguvan Sok No 16 Nosab
Product/Service:Spot Welding Machines, Projection Welding Machines, Arc (Mig Mag) Welding Machines, Seam Welding Machines, Mesh Wire Welding Machines, Capacitor Discharge Welding Machines, Precision Welding Machines, Customer Specific Welding Machines, Multispot Welding Machines, Welding Positioners , Welding Transformer (MFDC Medium Frequency),Welding Cables,Welding Gun (Robotic Servo Gun),Panel Radiator Welding Line,Spot Welding Machine (3 Phase DC),Spot / Projection Welding Machine (Type SPR4),Microprocessor Welding Controller (SMP 640),Longitudinal Seam Welding Positioner (SGKP B1),Welding Turntable (SWPY-628),CNC Welding Machines (Four Stations - Rotary table),Wire Mesh Welding Machines,Butt Welding Machine (SAK2 - 75 kVA),Spot Welding Machine (SP2 Medium Size),Spot Welding Machine (SP1 Desktop),Capacitor Discharge Welding Machine (SKD5),Flexible Copper Shunt,Seam Welding Machine (Transversal SD4),,Spot Welding Machines, Projection Welding Machines, Arc (Mig Mag) Welding Machines, Seam Welding Machines, Mesh Wire Welding Machines, Capacitor Discharge Welding Machines, Precision Welding Machines, Customer Specific Welding Machines, Multispot Welding Machines, Welding Positioners , Welding Transformer (MFDC Medium Frequency),Welding Cables,Welding Gun (Robotic Servo Gun),Panel Radiator Welding Line,Spot Welding Machine (3 Phase DC),Spot / Projection Welding Machine (Type SPR4),Microprocessor Welding Controller (SMP 640),Longitudinal Seam Welding Positioner (SGKP B1),Welding Turntable (SWPY-628),CNC Welding Machines (Four Stations - Rotary table),Wire Mesh Welding Machines,Butt Welding Machine (SAK2 - 75 kVA),Spot Welding Machine (SP2 Medium Size),Spot Welding Machine (SP1 Desktop),Capacitor Discharge Welding Machine (SKD5),Flexible Copper Shunt,Seam Welding Machine (Transversal SD4),
Ningbo Welcut Welding and Cutting equipments Co., Ltd.
Welcut welding and cutting equipment co. , ltd is one of the largest domestic specialized enterprise that manufactures complete equipment, we have succeeded in cooperation with USA miller, Singapore Roma, Zhejiang university, many other international or local organizations to promote machine, ....
Address:No. 388# , Kunyan Road, Industrial Developed Zone, Yinzhou
Product/Service:Welding Rotators, Welding Manipulators, Welding Positioner, Nozzle For Gas Welding And Cutting, Cutting Torch, Gas Cutting Machine, turning-roll, rolling-bed , Longitudinal seam welder,Welding manipulator column&boom,Welding Rotator,welding positioners,Welding Manipulators/ column & beam,,Welding Rotators, Welding Manipulators, Welding Positioner, Nozzle For Gas Welding And Cutting, Cutting Torch, Gas Cutting Machine, turning-roll, rolling-bed , Longitudinal seam welder,Welding manipulator column&boom,Welding Rotator,welding positioners,Welding Manipulators/ column & beam,
Bright welding limited
Jinan North Welding Tools Co. Ltd. Is an enterprise invested by American Technology in China. The company has introduced welding tool production technology of world advanced level. With world-class equipment, it is engaged development and all kinds equipment tools. a large group professional ....
Address:North Qiyi Road, Jinan, Shandong Province, China
Product/Service:Welding torch,welding positioners,welding rotators,cutting machines,welding ovens , Welding Rotators (turning rolls) Model: NHTR-1000,Welding Positioner with gun support,Spool Gun,Welding Torch,Binzel welding torch,Welding Positioners BY-300, BY-600,BY-1200,,Welding torch,welding positioners,welding rotators,cutting machines,welding ovens , Welding Rotators (turning rolls) Model: NHTR-1000,Welding Positioner with gun support,Spool Gun,Welding Torch,Binzel welding torch,Welding Positioners BY-300, BY-600,BY-1200,
ATE ENGINEERING ENTERPRISES
We are a Welding Technology company engaged in the manufacture of following Products1) CO2 MIG Machines2) Standard MIG, TIG Torches, Robotic Torches addition to tailor made suit your application3) Sub Arc Machines4) SPMs for AutomationIn addition, we sole Authorized Distributors India SELCO Italy ....
Address:A-12, H Block, MIDC, Pimpri
Product/Service:Welding Machines,Welding Rectifier and Transformers,Plasma Inverter Welding Machines,Multi Function Inverters,TIG Welding Machines,MIG Welding Machines,Automation for Welding,Robotic Automation,Hard Automation,MIG Torches,TIG Torches,Robotic Torches,Welding Transformers , Arc Welding machine,MMA / Arc Welding,Argon Welding,TIG / Argon Welding,Diesel Welding Generators,MIG / CO2 Welding,Electrode Holder,Inverter Based MIG Welding Machine,Inverter Based TIG Welding Machine,plasma cutting,robot,Rotators,Welding Cables,Saw,Welding Accessories,Welding Cables,Welding positioner,Welding Rotator,inverter welding machines,inverter welding machines,ultra robust Diesel Welding Generators,Diesel Welding Generators,Welding Automation & Robots for Welding,Plasma Cutting Machines,Plasma Cutting Machines,Plasma Cutting Machines,SAW / Sub Arc Welding,SAW / Sub Arc Welding,SAW / Sub Arc Welding,MIG / CO2 Welding,TIG / Argon Welding,TIG / Argon Welding,,Welding Machines,Welding Rectifier and Transformers,Plasma Inverter Welding Machines,Multi Function Inverters,TIG Welding Machines,MIG Welding Machines,Automation for Welding,Robotic Automation,Hard Automation,MIG Torches,TIG Torches,Robotic Torches,Welding Transformers , Arc Welding machine,MMA / Arc Welding,Argon Welding,TIG / Argon Welding,Diesel Welding Generators,MIG / CO2 Welding,Electrode Holder,Inverter Based MIG Welding Machine,Inverter Based TIG Welding Machine,plasma cutting,robot,Rotators,Welding Cables,Saw,Welding Accessories,Welding Cables,Welding positioner,Welding Rotator,inverter welding machines,inverter welding machines,ultra robust Diesel Welding Generators,Diesel Welding Generators,Welding Automation & Robots for Welding,Plasma Cutting Machines,Plasma Cutting Machines,Plasma Cutting Machines,SAW / Sub Arc Welding,SAW / Sub Arc Welding,SAW / Sub Arc Welding,MIG / CO2 Welding,TIG / Argon Welding,TIG / Argon Welding,
GELISIM END. OTO. LTD. STI.
we are producing according to request of client, our range of production is highly big......................
Address:1th street
Product/Service:pipe bending machinery,hydraulic press,conveyor,spot welding,welding positioner , C Type Hydraulic Press,Conveyor,pipe and tube bending machinery,,pipe bending machinery,hydraulic press,conveyor,spot welding,welding positioner , C Type Hydraulic Press,Conveyor,pipe and tube bending machinery,
Wuxi Qiangxin Welding&Cutting Equipment Co., Ltd
Wuxi Novell.Qiangxin Welding&cutting equipment Co., Ltd is a high science enterprise , specially produce automatic welding & cutting machines and plate ***** recently years we have developed series of advanced practical assistant machines, special which can meet customers'need through ....
Address:tianshun road, wuxi, jiangsu, China
Product/Service:welding positioner, cutting machine, welding machine, manipulator, turning rolls, edge milling machine, welding assistant equipment,,welding positioner, cutting machine, welding machine, manipulator, turning rolls, edge milling machine, welding assistant equipment,
WUXI YANGTONG MECHANICAL EQUIPMENT CO., LTD.
Wuxi Yangtong Mechanical Equipment Co., Ltd. is a professional company specialized in manufacturing various welding equipment and CNC equipment. Our only 200km away from Shanghai Pudong Airport, Wusong Port, can be arrived at by way of highway. was established 1985 loan USD1, 300 as initial investment. ....
Address:Yangshan, Wuxi, Jiangsu, China
Product/Service:cnc flame/plasma cutting machine, h-beam/box-beam automatic welding production line, wind power tower welding production line, welding tank rotator, welding positioner, welding manipulator, cnc plate drilling machine, plate roll forming/bending machine,MOVABLE GANTRY TYPE CNC DRILLING MACHINE,Welding equipment of wind tower barrel,Box-beam Automatic Welding Production Line,H-beam automatic production line,CNC Flame/plasma cutting machine,,cnc flame/plasma cutting machine, h-beam/box-beam automatic welding production line, wind power tower welding production line, welding tank rotator, welding positioner, welding manipulator, cnc plate drilling machine, plate roll forming/bending machine,MOVABLE GANTRY TYPE CNC DRILLING MACHINE,Welding equipment of wind tower barrel,Box-beam Automatic Welding Production Line,H-beam automatic production line,CNC Flame/plasma cutting machine,
Wuxi Lingrui Welding
Wuxi Ling Rui Welding & Cutting Technology Co., Ltd is a high-tech enterprise, which design, manufacture and provides automatic efficiency welding cutting equipment. Products are widely used in shipbuilding, boiler, chemical, machinery, metallurgy, electric power, wind tower manufacturing, steel ....
Address:No.80 Xianghe road, Yangshi town, wuxi city,China, Wuxi, Jiangsu, China
Product/Service:welding positioner, welding roller, column boom machine, cnc plasma/flame cutting machine,Welding roller,,welding positioner, welding roller, column boom machine, cnc plasma/flame cutting machine,Welding roller,
Wuxi Boruixing Machinery Manufacturing Co., LtD
We are wuxi boruixing machinery manufacturing co., LtD based in Wuxi, China. member of TradeKey.com since April, 2012. Our business is related to Industrial Machinery industry and we specifically deal welding equipments(rotator...). Please find our product details below: rotator Welding mainly used ....
Address:No.10 Tangchun Road Tnoyuan Industry Area, Wuxi, Jiangsu, China
Product/Service:welding process&fixtures. rotator, positioner, manipulator, chamfer machine....,Air Damper,Roller Welding Machine,Steel Fabrication,Double Bed Welding Positioner,Welding Positioner,CNC Cutting Machine,Milling Machine (End Face),Chamfering Machine,Welding Manipulator Machine,Welding Rotator Machine,,welding process&fixtures. rotator, positioner, manipulator, chamfer machine....,Air Damper,Roller Welding Machine,Steel Fabrication,Double Bed Welding Positioner,Welding Positioner,CNC Cutting Machine,Milling Machine (End Face),Chamfering Machine,Welding Manipulator Machine,Welding Rotator Machine,
Wuxi Jiunuo Welding&Cutting Technology Co., Ltd
Wuxi Jiunuo Welding & Cutting Technology CO., LTD is a Sino-German joint ventrue, established in the year 1998, located Wuxi, JiangSu province, China, two hours' traffic from Shanghai port.We have many years of experience heavy-duty automated welding equipment and CNC cutting machine ....
Address:Hudai industrial park, Wuxi, Jiangsu, China
Product/Service:welding equipment, pole welding machine, welding rotator, welding positioner, welding turning rolls, h beam production line,H beam production line,Auto seam welding machine for electric poles,,welding equipment, pole welding machine, welding rotator, welding positioner, welding turning rolls, h beam production line,H beam production line,Auto seam welding machine for electric poles,
Wuxi Datang Welding & Cutting Mechanical Equipment Co., Ltd.
Our company Wuxi Datang Welding & Cutting Mechanical Equipment Co., ltd. is a high company, which specialize in auto welding equipment and H-beam production line. We study develop series advanced practical extracting domestic international technology technics continuously, can meet ....
Address:hengtong, Wuxi, Jiangsu, China
Product/Service:welding machine, welding positioner, welding manipulator, turning rolls, h-beam production line,,welding machine, welding positioner, welding manipulator, turning rolls, h-beam production line,
Wuxi Zhouxiang Complete Set Of Welding Equipment Co., Ltd
Wuxi Zhouxiang Complete Set of Welding Equipment Co., Ltd: The enterprise keep insist technology first, exploit and innovation, quality oriented. Its main products including: H beam steel production line series equipment, CNC cutting machine series, shot blasting machine, auto welding center, ....
Address:Donghutang, Wuxi, Jiangsu, China
Product/Service:welding, cutting and rolling machine, welding manipulator, welding rotator, welding positioner,,Welding Manipulator, Column and Boom,H-beam production line,,welding, cutting and rolling machine, welding manipulator, welding rotator, welding positioner,,Welding Manipulator, Column and Boom,H-beam production line,
Welding And Cutting Equipment Limited
Welcut welding and cutting equipment co., ltd is one of the largest domestic specialized enterprise that manufactures complete equipment, we have succeeded in cooperation with USA miller, Singapore Roma, Zhejiang university, many other international or local organizations to promote machine, ....
Address:yinzhou, ningbo, China
Product/Service:welding manipulator. welding rotator. cutting machine, cutting nozzle,Welding rotaotor, welding manipulator, welding positioner,,welding manipulator. welding rotator. cutting machine, cutting nozzle,Welding rotaotor, welding manipulator, welding positioner,
Wuxi Hengtong Petrolic Machinery Co, Ltd
Wuxi Hengtong Petrolic Machinery business scope includes designing and manufacturing of welding equipment and cutting equipment..
Address:no.18 hengtong road, Wuxi, Jiangsu, China
Product/Service:welding manipulator, welding rotator and welding positioner,Welding manipulator,,welding manipulator, welding rotator and welding positioner,Welding manipulator,
Wuxi Pyramid General Machinery CO., LTD
Wuxi Pyramid General Machinery Co., Ltd. is famous for its high quality products with technology.Our company headquartered in Wuxi, China. With one production base Yangshan Industrial Zone and sales center Commercial Center.Our a world wide leading manufacturer of welding rotating positioning ....
Address:No.7 Yangshan Industrial Park, Huishan District, Wuxi, Jiangsu, China
Product/Service:cnc cutting machine, welding rotators, welding manipulators, welding positioners, seam welders, pipe rotators , tank automatic welder, automatic welding equipments and related products.,Light Pole Production Line,Light pole welding machine,Welding Positioner,H Beam Steel Flange Straightening Machine,Precision type welding manipulator and double chuck welding positioner,Portable CNC Cutter,Gantry CNC Oxy-fuel/plasma cutting machine,Conventional Rotator,Adjustable turning roller,Turning Roller,,cnc cutting machine, welding rotators, welding manipulators, welding positioners, seam welders, pipe rotators , tank automatic welder, automatic welding equipments and related products.,Light Pole Production Line,Light pole welding machine,Welding Positioner,H Beam Steel Flange Straightening Machine,Precision type welding manipulator and double chuck welding positioner,Portable CNC Cutter,Gantry CNC Oxy-fuel/plasma cutting machine,Conventional Rotator,Adjustable turning roller,Turning Roller,
JINAN HUAFEI CNC MACHINE CO., LTD.
Jinan Huafei CNC Machine Co., Ltd. a high and new tech enterprise, is established run on the basis of modern enterprise system. Since built, company has focused introducing cultivating high-tech talents as development strategy. At present, brought together group professional who specialize in ....
Address:NO.12 Tonghua Road, Jinan, Shandong, China
Product/Service:welding machine, cnc cutting machine, slitting,Shearing and slitting production line,Slitting line,Shearing machine,Welding machine,Welding positioner,Welding pipe roller,Welding roller,Manipulator,QGI II cnc cutting machine,,welding machine, cnc cutting machine, slitting,Shearing and slitting production line,Slitting line,Shearing machine,Welding machine,Welding positioner,Welding pipe roller,Welding roller,Manipulator,QGI II cnc cutting machine,
Wuxi Lingrui Weldig Cutting Technology Co., Ltd.
We are a professional manufacturer with more than 10 years history which lies in Wuxi , our products include two categories as follows: CNC flame plasma cutting machine and portable machine. column boom welding machine, rotator, turning table, rotating table positioner, roller 3. H-beam 4. automatic ....
Address:Xianghe road, wuxi, Jiangsu, China
Product/Service:cnc plasma cutter, cnc router, welding equipment, column&boom, rotator, positioner, h-beam welding production line.,Protable CNC palsma cutting machine,Self-aligning welding rolling rotator,Automatic elbow pipe flange welding machine,CNC plasma pipe cutting machine,Welding positioner,Adjustable welding rotator,Table desktop CNC plasma cutting machine,Column & boom welding machine,Hozitontal welding machine,Automatic welding machine,,cnc plasma cutter, cnc router, welding equipment, column&boom, rotator, positioner, h-beam welding production line.,Protable CNC palsma cutting machine,Self-aligning welding rolling rotator,Automatic elbow pipe flange welding machine,CNC plasma pipe cutting machine,Welding positioner,Adjustable welding rotator,Table desktop CNC plasma cutting machine,Column & boom welding machine,Hozitontal welding machine,Automatic welding machine,