Hi Dear Brothers,
Peace Be Upon you.
Was wondering if anyone could share the following references for RTP:

DNV Standards
ASTM - WK11803
API - RP 15S (oil field service)
ISO/TS 18226:2006 (gas service)
DVGW VP 642 (German gas service)
NYSEARCH project by the Northeast Gas Association (USA)

Thanks in Advance