Hello Ray,
there is no reason for apologising, no problem!
First of all thanks for answered at all my questions.

I aplogise with you for my mistake, for P235GH code is EN10216 (Seamless tube product) while EN10028 is used for flate product... Sorry.
CII material database has material number 1.0345 (P235GH) but EN13480-2 assigns this material number at flat product (EN10028) or welded tube (EN 10217-5) made in P235GH, while for seamless tube product (EN10216-2) don't give a number material, for this reason i am confused and i wrong.
Another simple question, 1.0345S-16/1.0345W-16: S=seamless, W=welded &
16=maximum thickness?
This is my first job using EN code, i always used ASME code and for this reason i am in trouble.

Thanks
Best regards