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@ntctlAno.e
Metal
Protection
Tubes
-
,r "
Nominal Pipe Sizes
(NPS)
Richards metal
thermocouple
protection tubes are manufactured using our special processes
to
maximize the tube
service
life.
This
is
evident
by
our
uniquely
shaped,
heavy mass tips,
which
have
been
proven
in
the field for
years.
Prior
to
shipment, each
tube
goes
thru our
Hydro-Pneumatic testing
to
check
for
porosity.
Protection
tubes
are
typically
made with a closed
tip
and one
thread
on
the
cold
end,
but
they are
also available
with open ends
and
various threading
options.
Open Tube
Examples:
The
part number
601-YOBE-12 signifies a
1"
O.D.,
Alloy
601,
open both
ends,
with
no
threads'
The
part number
601-OBE-12 signifies a
1"
O.D.,
Alloy
601,
open both
ends,
with one
end threaded.
The
part number
601-OBE2T-12
signifies
a
1"
O.D.,
Alloy
601,
open
both ends,
with
both ends threaded.
Closed Tube
Examples:
The
part number 601-12
signifies
a
1"
O.D.,
Alloy
601 ,
closed one
end,
with one
end threaded.
The
part number
601-12-NT signifies
a
1"
O.D.,
Alloy
601,
closed one
end,
with
no threads.
t
Maximum service
temperature
2300"F
(1260'C)
in oxidizing
atmospheres.
Good
resistance
to
sulfidizi
ng
atmospheres.
#6 Seamless
Nickel Alloy
(601)
Nickel
60.5"/", Chromium
23o/o
lron
14o/",
Aluminum
1.4%
Copper
.5"/",
Manganese
.57o
Silicon
.2/",
Carbon
.05%
6'ol
1
"
Std
1
.32 33.4
1
.05 26.7
1
.80 2.66
601-*
3/4"
Std 1.05 267 .82 20.8 1.20 1.79
634'*
314"
NPT 1.25 31.8 .56 14.2 3.20 4.76
634SP-.
1/2"
Std .84
21
.3 .62 15.7 .91
1
.35
622'*
3/8"
Std .68 17.2 .49 12.4 .61 .91
638-*
Maximum service
temperature 2100"F
(1150"C) in oxidizing
atmospheres.
Excellent
resistance
to
sulfidizi
ng
atmospheres, corrosion,
scaling, salts,
and
abrasion.
Not for
carburizing
atmospheres.
#7 Seamless
Stainless
Steel (446)
Chromium
23-27o/o
Manganese
1
.5%
Silicon
1%
Nitrogen
.25%
Carbon .20%
Sulphur .030%
Phosphorous
.040%
lron
(Balance)
4.46SS
1"
std 1.32 33.4
1
.05 26.7
1
.68 2.50
701-*
314"
XH
1
.05 26,7 .74 18.8 1.47 2.19
734XH
314"
NPT
1.25
31
.8 .56 14.2 3.20 4.76
734SP
1/2"
Std .84
21
.3 .62 15.7 .85
1
.27
722-*
112"
XH .84
21
.2 .55 14.0 1.09 1.62
712XH
1/2"
NPT
1
.00 25.4 .56 14.2
1
.87 2.78
712SP
3/8"
Std .68 17.3 .49 12.4 .57 .85
738'*
114"
XH .54 13.7 .25 6.4 .42 .63
714XH
1/4"
NPT .50 12.7 .25 6.4 .48 .72
714SP
Maximum service
temperature 1600"F
(1870"C)
in oxidizing
atmospheres.
Frequently used
in
chemical applications
due to corrosion
resistance.
Subject
to
carbide
precipitation
between
800-1000'F
(427-538'C).
#8 Seamless
Stainless
Steel
(304)
Chromium 19%
Nickel
10%
Manganese
2o/o
Silicone
1%
Carbon .08%
Phosphorous
.045%
Sulphur .030
%
lron
(Balance) IO4SS
1
"
Std
1
.32 33.5
1
.05 267
1
.68 2.50
801-*
3/4"
Std
1
.05 26.7 .82 20.8
1
.13
1
.68
834-*
gl4"
xH
1
.05 26.7 .74 18.8 1.47 2.19
834XH-*
gl4"
NPT
1.25 31.8 .56 14.2 3.20 4.76
834SP-.
1/2"
Std .84
21
.3 .62 15.7 .85 1.27
822-*
112"
XH .84
21
.2 .55 14.0
1
.09
1
.62
812XH-*
3/8"
Std .68 17.3 .49 12.4 .57 .85
838-*
1/4"Std .54 13.7 .36 9.1 .42 .63
814-*
1/8"Std .41 10.4
.27
' 6.9 .24 .36
818-*
Maximum seruice
temperalure
2100"F
(1
1
50"C)
in oxidizing
atmospheres.
Excellent
resistance
to
carburisation.
Frequently used in salt
baths. Avoid
sulfidizing
atmospheres.
#9 Seamless Nickel
Alloy
(600)
Nickel
76%
Chromium 15.5%
lron
B"h
Manganese
.5%
Silicon
.2%
Copper
.2"h
Carbon .08%
(rOO
1
"
Std
1
,32 33.5
1
.05 26.7
1
.80 2.66
901-*
3/4"
Std
1
.05 26"7 .82 20.8 1.22 1.81
934-*
gl4"
xH
1
.05 26.7 .74 18.8
1
.51 2.25
934XH-*
314"
NPT 1.25
31
.B .56 14.2 3.20 4]6
934SP-.
1/2"
Std .84
21
.3 .62 157 .91
1
.35
922'*
112"
XH .84
21
.3 .55 14.0
1
.17
1
.74
912XH-*
3/8"
Std .68 17.3 .49 12.4 .61 .91
938-*
1/4"
Std .54 137 .36 9.1 .46 .68
914-*
1
/8"
Std .41 10.4 .27 6.9 .26 .39
91
8-*
Maximum seruice
temperalure
2100"F
(1150"C) in oxidizing or
reducing atmospheres.
Good
resistance
to
sulfidizi
nq atmospheres.
#10 Seamless Nickel
Alloy
(800)
Nickel
35"/",
Chromium
23h
lron
39.5"h, Manganese
15%
Silicon
1"h,
Copper
.75o/"
Aluminum
& lltanium.6%
Carbon .1%
rrrsl'rvlrrrv/v
8OO
1
"
Std
1
.32 33.5
1
.05 26.7
1
]2 2.56
1001-*
3/4"
Std
1
.05 26.7 .82 20.8
1 .1
5
1
.71
1
034-.
112"
XH .84
21
.3 .55 14.0
1
,12
1
.66
1012XH-*
Replace the *
in
the above part number with the required length (P) as the sufiix'
Protection tubes are stocked in multiples of
6"
starting
at
12", although
aly&lg!!-gq! !9
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Page 86