{"product_id":"tungsten-electrode-wqtb-wt20-red","title":"Tungsten Electrode WQTB WT20 Red","description":"\u003cp\u003eWQTB WT20 Tungsten Electrode is a professional-grade, industrial TIG welding needle manufactured by WQTB. It features a distinctive Red color code tip and is doped with 2% thorium oxide, making it the globally preferred choice for high-amperage Direct Current (DC) TIG welding applications.\u003cbr\u003e\n \u003cbr\u003e\n The WQTB WT20 Thoriated Electrode is heavily favored by professional fabricators due to its exceptional arc stability, high current-carrying capacity, and low burn-off erosion rate. \u003cbr\u003e\n \u003cbr\u003e\n The addition of 2% thorium oxide lowers the work function of the tungsten, allowing it to emit electrons much more easily than pure alternatives. This results in instant, reliable High-Frequency (HF) arc striking even at lower starting voltages.\u003cbr\u003e\n \u003cbr\u003e\n Because it operates far below its melting threshold, the needle maintains a sharp ground tip profile for long periods without splitting or \"spitting\" tungsten into the weld pool. This minimizes dross inclusion and keeps welds uniform. It is optimized exclusively for DC TIG welding (DCEN \/ straight polarity) on structural carbon steels, stainless steel pipe joints, nickel alloys, copper, and titanium structures.\u003cbr\u003e\n \u003cbr\u003e\n Note: Due to the trace radioactivity of the thorium dopant, always utilize local exhaust extraction or a dedicated dust-collection grinder when sharpening the needle tip.\u003c\/p\u003e","brand":"Sieco","offers":[{"title":"2.4 \/ 10","offer_id":56031567544612,"sku":"SP.WT20.24","price":450.0,"currency_code":"INR","in_stock":true},{"title":"3 \/ 10","offer_id":56031567577380,"sku":"SP.WT20.30","price":700.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1016\/4938\/3716\/files\/512tm58y-gL.jpg?v=1787131120","url":"https:\/\/www.weldtools.in\/products\/tungsten-electrode-wqtb-wt20-red","provider":"weldtools","version":"1.0","type":"link"}