That is gibberish.
ASTM D75 is the ASTM that covers the sampling of aggregates.
It means that the material of the Valve has been up to the ASTM Casting Specification ASTM A351 Grade CF8. Used for corrosive or extremely high temperature Non Corrosive services.
no
The ASTM equivalent of DIN 1543 is ASTM A572. Both of these materials are a type of carbon steel.
ASTM B187 and ASTM B152 copper are very similar in structure. The main difference is that ASTM B187 copper is temper H04 and is hard, and ASTM B152 copper is cold rolled and hot rolled.
Astm a36. Its rot rolled steel with nearly matching with astm a36.
Astm 50
Astm a-36
Basically there is no difference as pipe is ussually stenciled with both standards.
ASTM A 414 Grade D
You can buy a copy of ASTM D143 from www.astm.org.
Astm d 3616