Product Name: Wth7 Series Thoriated Tungsten Wires for TIG Welding Model NO.: Thoriated Tungsten Wires( WTH7) Extended Length: 10-20mm Slag Characteristic: Alkaline Flux Containing: Not Containing Flux Material: Stainless Steel Type: Rolling Wire Trademark: shellmax Transport Package: Export Standard Package Specification: CE CCC ISC9002 Origin: China HS Code: 85153900 Product Description WTh7 can be used for making electron tube, the hook of emitting tube, spring, high temperature electrode and negative electrode of light of air discharge. WTh10WTh15WTh20 can be used for making a negative electrode and railing electrode of electron tube, high temperature electrode and filament which is against vibration.Model: WTH7Condition: RSpecification: ø 0.2- ø 0.8(Diameterallowedtoleranceofthewire )mm(diameter)200mmm(tolerance of wire weight)(diameter allowed tolerance)(first -grade)(second-grade)(first -grade)(second-grade)ø 0.2-ø 0.35±1.5±2.0> ø 0.35-ø 0.80-------------±1.0±2.0chemicalcompositionmodelW%Oxide%Impurity%intermingled material contentWTh798.900.70-0.99<0.01<0.01WTh1098.411.00-1.49<0.01<0.01WTh1597.911.50-1.99<0.01<0.01WTh2097.641.99-2.50<0.01<0.01