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  The first excess length of optical fiber versus the steel tube
  (excluding stranding excess length)
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The specifications of the optical unit The central tube Eccentric tube
The Max, number of cores Excess length The Max, number of cores The Max, excess length
2.5 12 5¢¶ 24 2.6¢¶
2.6 16 5¢¶ 24 2.8¢¶
2.7 20 5¢¶ 30 2.7¢¶
2.8 24 5¢¶ 30 2.9¢¶
3.0 30 5¢¶ 36 3.0¢¶
3.2 36 5¢¶ 48 3.4¢¶
3.3 40 5¢¶ 48 3.9¢¶
3.4 40 6.0¢¶ 48 4.5¢¶
3.5 48 5.5¢¶ 48 5.5¢¶
3.6 48 6.0¢¶ 48 6.0¢¶
3.8 48 6.5¢¶ 48 6.5¢¶


The company adopts the first level and the most mature Nexans lazar welding steel tube line
  • The CO2 gas laser instrument is driven by the R.F. The light spot outputted is the pure single mode and it has the highest quality of welding seams, which can guarantee there is no welding leakage within 50Km
  • The company adopted the welding pulling technology. It can control the optical fiber excess length needed accurately . The pulling process is also the process of filtering, eliminating the malfunctions such as weak welding and welding leakage.

It is filled with water-proof gel in the tube. The filling rate is no less than 90% so that it can be of the excellent property of water proof

The cross section of the steel tube is small and the resistance if it is quite big. When the short circuit happened, there is almost no current passing through the optical unit. Only the heat conducted by the neighboring leads can be born. The temperature of the optical unit is lowest in the whole cross section, which protects the optical fibers efficiently.

    

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Copyright(c)since 2003 Reliance Corp. All right reserved
1304, Kumkwang Benesta,1149-2, Jung-Dong, Wonmi-Gu,
Bucheon-city, Gyeonggi-do 420-020, KOREA

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