Hi colleagues,
We have some venting valves (Drukon GmbH) used in flexible pipes for oil production which uses PTFE and NBR in the sealing system (O-rings, x-rings, back-up rings and filter retainer). Our internal valve specification requests a service life of 20 years, but doesn't specify...
Hi guys,
I've asked quotation for a component manufactured of ASTM A572 gr 50 with ENP. As I see, the steel is furnished without heat treatment or with stress relieving only, and here in our specification, we require a ENP with heat treatment at 600°C for 10hrs. I've checked A572 properties and...