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日本北海钨业公司东邦金属钨专业厂采用粉末冶金法研制出钨无缝管的制造方法並着手进行生产。钨与钼比较,熔点可高到3410℃(钼为2620℃),但质脆加工难。过去日本所用钨管
Japan Beihai tungsten company Toho Tungsten professional factory using powder metallurgy developed tungsten seamless pipe manufacturing methods and proceed with the production. Tungsten and molybdenum compared to the melting point can be as high as 3410 ℃ (molybdenum is 2620 ℃), but crisp processing difficult. Used in Japan used tungsten tube