  Iron-pnictides are hotly studied since 2008 in the superconducting materials
research area, due to their special properties and unclear mechanism. Big
achievement has been made in the pnictide research during the past years. For
practical uses, pnictide superconductor should be fabricated in a long wire
form which can be used for different devices. In this work, 100 m class 7-core
Sr0.6K0.4Fe2As2 (Sr122) tapes have been made using the powder-in-tube
technique, which is reported for the first time. Clearly, an average Jc of
1.3x10^4 A/cm^2 at 10 T was reached over the 115 meter length, showing a high
property and good uniformity of 100 meter level Sr122 tapes. Using the 10 m
long Sr122 tapes, two double-pancake coils were fabricated by a wind and
reaction technique. No transport current could be measured for the coil made
from the mono-filamentary tape. However, transport Ic was obtained in the coil
made from the 7-filamentary tape. The factors which affect the superconducting
property of the coil were discussed in this work.
