UV-stop Quartz Tube

This Ce doped glass can stop nearly all the radiation of ultraviolet ray of UV-B&UV-C and big proportion radiation of ultraviolet ray of UV-A.it is an ideal material which stops ultravilet ray and set out maximum visible light .it serves as the material of quartz alogen lamps ,high density discharge lamps and other UV light,which prevent the harm to the skin of the people and the things which has to be under the exposion of UV radiation and set out the maximum visible light at the same time . For detailed dimensional toletance and technical data please see table I，table II,table III, tableIV. Dimensional Tolerance (table I)

Range of 0D 0D WT Siding Out of Round Bow/1220mm ≤6mm ±20％ ±10％ 12％ 2.0％ 2.5mm 6.0-15.00m ±1.25％ ±8％ 10％ 1.5％ 2.5mm 15.00-20.00mm ±1.25％ ±10％ 15％ 1.5％ 2.5mm 20.00-25.00mm ±1.25％ ±10％ 15％ 1.5％ 3.0mm 25.00-30.00mm ±1.35％ ±12％ 15％ 1.5％ 3.0mm 29.00-38.00mm ±1.35％ ±12％ 15％ 1.5％ 3.0mm

Chemical composition&OH (table II)

Cr Ge Fe Mg Ti Ca Al Na Li K OH 20 0.4 1.5 0.4 100 1.0 16 2.3 0.5 2.0 ＜25

Physical Properties (table III)

Density 20℃　kg．m-3(×103) 2.2  Coefficient of expansion 25-300℃ c-1(×10-6) 0.56  Softening point(℃) 1630  Annealning point(℃) 1180  Strain point(℃) 1100  Youngs modulus(pa) 7.3×105

Spectral Transmission at 1.0mm Thickness (table IV)

nm ＜220 230-280 290-330 350 450 550 590 780 ％ 0 ＜15 0 15 88 92 93 93