Harwood’s high pressure tubing is of premium quality made to exacting standards by the best mill practice for proper metallurgy, quality, strength and finish. It is free of radial cracking ensuring long service life. The solid high pressure tubing is normally supplied in type 304 stainless steel.
The composite tubing is made with cold drawn 304 stainless steel cores shrouded with either premium alloy steel or stainless steel. Distinct advantages result from the use of composite tubing in the larger sizes in better control of metallurgy, strength and quality.
Below is a table of our high pressure seamless tubing:
Part Number
Fitting Series
Tubing Series
Outside Diameter
Inside Diameter
Working Pressure
Tubing Proof Pressure
Rupture Pressure In Excess of
A-13914
2M*
2M-.025
1/8″
.025″
150,000 psi
175,000 psi
300,000 psi
A-13473
3M*
3M-.025
3/16″
.025″
200,000 psi
200,000 psi
300,000 psi
A-13756
4L*
4L-1
1/4″
1/16″
100,000 psi
120,000 psi
180,000 psi
A-13876
4L*
4L-1.5
1/4″
3/32″
70,000 psi
90,000 psi
125,000 psi
A-13870
5M*
5M-1
5/16″
1/16″
125,000 psi
150,000 psi
210,000 psi
A-13487
6L*
6L-2
3/8″
1/8″
60,000 psi
90,000 psi
140,000 psi
A-13871
6M*
6M-1
3/8″
1/16″
150,000 psi
175,000 psi
230,000 psi
A-13872
8L*
8L-2
1/2″
1/8″
100,000 psi
120,000 psi
150,000 psi
A-13875
9L-3*
9L-3
9/16″
3/16″
60,000 psi
90,000 psi
120,000 psi
A-13486
9L-5*
9L-5
9/16″
5/16″
20,000 psi
40,000 psi
60,000 psi
A-13873
12H-1**
12H-1
3/4″
1/16″
200,000 psi
200,000 psi
200,000 psi
A-13874
12H-2**
12H-2
3/4″
1/8″
180,000 psi
200,000 psi
200,000 psi
A-14685
15F**
15F-5
15/16″
5/16″
50,000 psi
75,000 psi
120,000 psi
A-14686
16F**
16F-4
1
1/4″
100,000 psi
120,000 psi
160,000 psi
A-14684
24F**
24F-8
1 1/2″
1/2″
50,000 psi
75,000 psi
120,000 psi
* Solid type 304 SST ** Composite type 304 SST core with alloy shroud
Coning, Threading, and Seating Tools
For those who wish to handle the tube preparation themselves, coning, threading, and seating tools for most tubing sizes are available for purchase. The table below gives information on our tooling:
HARWOOD PART NUMBERS
TUBE SERIES
TUBING SIZE O.D.” X I.D.”
CONING TOOL
REPLACEMENT CUTTER BLADE
THREADING TOOL
REPLACEMENT DIE
REPLACEMENT BUSHING
SEATING TOOL
2M-.025
1/8 X .025
C-1992
B-3756
C-1990
A-3570
–
A-9800
3M-.025
3/16 X .025
C-2188
B-3756
C-2190
A-4406
–
A-9800
4L-1
1/4 X 1/16
C-2653
B-3756
A-3499
A-4102
–
A-8835
4L-1.5
1/4 X 3/32
C-2653
B-3756
A-3499
A-4102
–
A-8835
5M-1
5/16 X 1/16
C-2193
B-3756
A-3501
A-4101
–
A-8835
6L-2
3/8 X 1/8
C-2654
B-3756
A-3503
A-4090
–
A-9151
6M-1
3/8 X 1/16
C-2654
B-3756
A-3503
A-4090
–
A-8835
8L-2
1/2 X 1/8
C-2655
B-3756
A-3505
A-4091
–
A-9151
9L-3
9/16 X 3/16
C-2656
B-3756
A-3507
A-4092
–
A-9831
9L-5
9/16 X 5/16
C-2656
B-3756
A-3507
A-4092
–
A-10929
12H-1
3/4 X 1/16
–
–
D-1556-A
A-3609
B-2605-A
B-7431
12H-2
3/4 X 1/8
–
–
D-1556-A
A-3609
B-2605-A
A-9151
15F-5
15/16 X 5/16
–
–
D-1556-B
A-4089
B-2605-B
–
15F-4
1 X 1/4
–
–
D-1556-C
A-6100
B-2605-C
–
Newport-Scientific, Inc an ISO 9001:2015 Company
8246 Sandy Court Suite E Jessup, Maryland 20794 USA
Call 301-498-6700 or Email sales@newport-scientific.com
