... . ruby, clear, yellow, black, gray,milky quartz glass tube Xinxiang Xinbo glass quartz products Co., LTDProductmaterial:quartzfeature :These tubes advantages are ... block,Xinxiang City,Henan provinceProduct Image Production process huge diameter quartz glass tube 1.dimension tolerance Range of ODODWTSidingOut of roundBow/ ... )1210Strain point(°C)1110Youngs Modulus7.3×105 huge diameter quartz glass tube