pressure & temperature ratings

max.working pressure	3000psi	5000psi	10000psi	15000psi	20000psi
test pressure	4500psi	7500psi	15000psi	22500psi	30000psi
product specification levels	1,2,3&4	1,2,3&4	1,2,3&4	1,2,3&4	1,2,3&4
product rating	1&2	1&2	1&2	1&2	1&2
api temperature rating	k(-60℃) to y(+345℃)	k(-60℃) to y(+345℃)	k(-60℃) to y(+345℃)	k(-60℃) to y(+345℃)	k(-60℃) to y(+345℃)

material requirements

material class	body,bonnet,end and outlet connections	pressure controlling parts e.g.stems
aa-general service	carbon or low alloy steel	carbon or low alloy steel
bb-general service	carbon or low alloy steel	stainless steel
cc-general service	stainless steel	stainless steel
dd-sour service**	carbon or low alloy steel*	carbon or low alloy steel*
ee-sour service**	carbon or low alloy steel*	stainless steel*
ff-sour service**	stainless steel*	stainless steel*
hh-sour service**	corrosion resisitant alloys*	corrosion resisitant alloys*