### Instruction:

Extract the cause and effect entities from the following sentence:
UNS N08367 (trade name AL-6XN) or UNS S31254 (trade name 254 SMO) shall be used in pressure piping and tubing in lieu of 300-series stainless steel when the piping or tubing is directly exposed to a corrosive environment

### Assistant:

VARIABLE: tubing
NOT_RELEVANT: (trade name 254 SMO)
OR: or
CONDITION: is directly exposed to a corrosive environment
AND: and
KEYWORD: when
CAUSE_1: the piping
CAUSE_2: tubing is directly exposed to a corrosive environment
EFFECT_1: UNS N08367
EFFECT_2: shall be used in pressure piping
EFFECT_3: tubing in lieu of 300-series stainless steel

