I am looking for below standards:

DIN 30660
Sealing materials for gas and water supply as well as water heating systems - Non-hardening jointing compounds and polytetrafluoroethylene (PTFE) tapes for metallic threaded joints in domestic installations

DIN EN 751-2
Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water - Part 2: Non-hardening jointing compounds; German version EN 751-2:1996

Does anybody have it in English?

Most DIN norms are also in the english version translated. Especially the EN as European Norm should be available in the internet to purchase in English

Go to din.de
type 751-2 in Suchen (search) and you will find it in english for 72.07 EUR