Thisglasshadthetypicalcharacteriasticsofhighpurity,goodspectraltransmission,wellcontrolleddimensionandlowerOHandsoon.Itservesasthefirstchoiceofheatresistantmaterialforhalogenlamps,mercurylamps,metalhalidelampsandotherquartzlamps.Thisglasscanbesuppliedintherangeof3-300mmoutsidediameter,0.5-10mmwallthicknessand10-3000mmlength.ExhausttubeswithgoodCPKaresuitableforhigh-speedstreamlineproduction.Andfurtherprocessingoftrimcutting,firepolishing,bendingandpinchingandetc.canbedoneaccordingtotherequirementofcustomers.OH-contentcanbecontroledwithin20ppm\15ppm\10ppm\5ppm\2ppmaccordingtotherequirementof customers.