bids are invited for boq boq welding transformer , welding transformer or inverter based welding machine igbt , d.c arc welding rectifiers set with all accessories , gmaw welding machine , ac or dc gtaw welding machine , air plasma cutting equipment , air compressor suitable for above air , auto darkening welding helmet , spot welding machine , portable gas cutting machine pug , pedestal grinder fitted with coarse and medium grain size grinding , bench grinder fitted with fine grain size silicon carbide green grinding , compressor unit , pneumatic trainer kit each consisting of the following matching components and accessories , single acting cylinder , double acting cylinder , 3 by 2 way valve , one way flow control valve , 5 by 2 way valve , 5 by 2 way pneumatic actuated valve , 3 by 2 way roller lever valve , shuttle valve or , two pressure valve and , pressure gauge , manifold with self closing , pushbutton station for electrical signal input , relay station , 3 by 2 way single soleid valve , 5 by 2 way single soleid valve , 5 by 2way double solid valve , power supply unit , profile plate adised aluminium , pneumatic workstation with 40 square mm aluminium profile legs, , carrier for mounting components, such as pb and relay boxes. , cut section model for pneumatic components , hydraulic trainer kit consisting of the following matching components and accessories , hydraulic power pack , pressure relief valve , drip tray steel , pressure gauge , four way distributor , double acting hydraulic cylinder , suitable weight , mounting kit for weight , 3by 2 way directional control valve , 4 by 2 way directional control valve , 4 by 3 way directional control valve , n return valve , pilot operated check valve , t shaped connector with self sealing coupling nipples 2 and quick coupling socket 1 , profile plate , hydraulic workstation with 40 square mm aluminium profile legs, wooden work surface, , conductivity 1 74aluminium profile legs, wooden work surface, , conductivity total quantity : 238