long/short back cap for WP-18 TIG welding torch accessory of tig ... torch consumable for welding spare parts long/short back cap for WP-18 TIG welding torch1.wp-18 water ... specifications of welding nozzles,tips,shield cup,,tips are available in our company 4.We produce many kinds of ... air cooled and water cooled etc. Including torch head, back cap, cup gasket, collet, collet body, gas lens body, cable ...