chalenge for all the enginners

Your question is indecipherable, unintelligible and insoluble.

I think your question is about making an offset of 100 mm in a line of 10" pipe... It sounds to me like it would be best to bend the pipe to make such a small offset or make a custom section for this...

I cannot believe you could get through school with those grammar skills

Horrid.

You could almost do it with two 22.5 degree elbows. You could do it with two 11.25 degree elbows and a short infill.

The intent of the OP is unclear. One thing is the mixture of units: 10-inch pipe versus 100 mm run (or offset or whatever).

If the offset is meant as 100 mm (≈ 4 inches), this can be done by trimming two 37° elbows out of a single 90° long-radius (R = 1.5 D) elbow, and then welding these directly together with no "pup" (short pipe) between.

If the local piping code allows it, this can also be done with a mitered pipe offset at, say, a 15° angle.

I'm surprised that the OP's pipefitter buddies don't already know how to do this. Maybe it is a communication problem, or inadequate drawings.