Stainless steel ASTM A182 316L (forging) is：22HRC，
Ni-Cr-Mo-Co ( Inconel 625○,R) alloy 625（NACE MR 01-75）is ：35HRC。

KEY valve is very good at making the valves with welding inconel 625 for anti-corrosion.

• overlay ball valve , size from 1/2” to 30” , pressure from 150lb to 2500lb, welding inconel 625 on the body, seat, ball,where the flow can be reatched.
• overlay gate valve , size from 1/2” to 30” , pressure from 150lb to 2500lb, welding inconel 625 on the body, seat, wedge,where the flow can be reatched.
• overlay check valve , size from 1/2” to 30” , pressure from 150lb to 2500lb, welding inconel 625 on the body, seat, disc,where the flow can be reatched.
• overlay globe valve , size from 1/2” to 16” , pressure from 150lb to 1500lb, welding inconel 625 on the body, seat, ball,where the flow can be reatched.
• we got so many orders from the clients ,specially from saudi arabia and oman during the last 10 years. And they give us very highly appraise.