Specialty Mechanical Steel Tubing

Specialty Mechanical Steel Tubing is typically manufactured to precise specifications, using high-quality materials and advanced manufacturing techniques.

Lock Joint Tube has various options of custom steel tubing shapes including:

Octagonal steel tubing
Triangle Tube
Peanut Tube
Bullet Tube
Pie Tube
Trapezoid Tube
Parallelogram Tube

All tubes are produced to ASTM A513 if uncoated or A787 of it is coated.

LJT offers specialty shape steel tubing in custom-cut lengths ranging from 96” - 600”.

Contact Us

Specialty Mechanical Steel Tubing Capabilities

Outside Diameter: 0.3125” – 6.625”

Wall Thickness: 0.03” – 0.375”

Material Types:

Speciality Tubing Specifications

ASTM A513
ASTM A500
ASTM A1011
ASTM A1008
ASTM A787
JIS G3445
SAE J1392
SAE J2340
European Equivalents /EU equivalents of above

SPECIFICATIONS IN ALLOY:

4140 Steel Tubing
4130 Steel Tubing

View Our Customized Mill Capability Success Story

Specialty structural steel tubing examples by Lock Joint Tube

Specialty Steel Tubing Sizes

Nominal Wall	Shape	Description
18	OCT	.693 OCT
14	FLOV	3/8 X 1 3/16 FLOV
16	FLOV	3/8 X 1 5/16 FLOV
14	ELOV	.506 X 1.316 ELOV
20	FLOV	.590 X 1.260 FLOV
16	POV	.619 X 1 1/4 POV
16	ELOV	7/8 X 1 1/4 EL/OV
14	FLOV	.630 X 1.378 FLOV
14	ELOV	3/4 X 1 1/2 ELOV
14	ELOV	3/4 X 1 1/2 ELOV
14	FLOV	.292 X 1.678 FLOV
14	FLOV	.709 X 1.417 FLOV
17	FLOV	3/4 X 1 1/2 FLOV
16	FLOV	3/4 X 1 1/2 FLOV
14	FLOV	1 X 1 1/4 FLOV
14	FLOV	3/4 X 1 1/2 FLOV
14	ELOV	3/4 X 1.636 EL/OV
13	PEAROV	1 X 1.483 PEAR OVAL
18	DOV	3/4 X 1 3/4 D-OVAL
14	FLOV	.787 X 1.575 FLOV
14	FLOV	.787 X 1.575 FLOV
12	ELOV	1 X 1 1/2 ELOV
14	FLOV	.563 X 1 3/4 FLOV
14	FLOV	3/4 x 1.703 FLOV
12	OCT	1 1/4 OCTAGON
16	ELOV	.992 X 1.682 ELOV
16	FLOV	3/4 X 1.675 FLOV
16	ELOV	7/8 X 1 3/4 ELOV
14	ELOV	.820 X 1.890 ELOV
16	ELOV	1 1/8 X 1 3/4 ELOV
16	PEA	.772 X 1 7/8 POV
16	FLOV	3/4 X 2 FLOV
14	FLOV	3/4 X 2 FLOV
16	POV	.722 X 1.875 PEANUT OVAL
14	FLOV	.770 X 2.000 FLOV
16	FLOV	1 X 2 FLOV
14	FLOV	1 X 2 FLOV
11	FLOV	1 X 2 FLOV
16	BELLRC	1.120 X 1 3/4 BELL RC
14	ELOV	1 3/8 X 2 ELOV
18	DOV	1.228 X 1.921(NOM)DOV
16	DOV	1 X 2 D-OVAL
16	FLOV	1 X 2 1/8 FLOV
14	SPREC	1 X 2.075 SPREC
16	BULLOV	1 X 2.120 BULLET OVAL
16	FLOV	1.181 X 2.362 FLOV
14	DOV	1.185 X 1.980 DOVAL
18	FLOV	1 1/8 X 2 7/16 FLOV
16	FLOV	1 1/8 X 2 7/16 FLOV
10	ELOV	1.599 x 2.364 ELOV
10	FLOV	1 1/8 X 2 7/16 FLOV
14	POV	1 1/16 X 2.563 PEAOV
16	DOV	.984 X 2.362 DOVAL
16	ELOV	1 X 3.150 ELOV
16	FLOV	1.378 X 2.717 FLOV
12	FLOV	1.600 X 2.594 FLOV
13	KNCK	1.283 X 2.441 RC
12	FLOV	1 5/8 X 2 3/4 FLOV
14	TRI	2.165 X 2.932 TRI .075 CRHSLA 950XF
12	FLOV	1.181 X 3.150 FLOV
12	TRI	2.062 X 2.875 TRI
18	FLOV	1.761 X 2.948 FLOV
12	BELLRC	1.600 X 2 11/16 BELL RC
17	ELOV	1.791 X 3.404 ELOV
12	FLOV	2.100 X 3.100 FLOV
11	DOV	2.46 X 2.954 D-OVAL
13	DOV	1.880 X 3.480 D-OVAL
12	BELLRC	1.600 X 3.188 BELL RC
12	BELLRC	1.890 X 2.985 BELL RC
12	ELOV	1.935 X 3.870 ELOV
12	FLOV	1.604 X 3.888 FLOV
12	FLOV	1.604 X 3.888 FLOV
11	ELOV	1 3/4 X 4.000 ELOV
11	FLOV	1 3/4 X 3 29/32 FLOV
14	POV	1.700 X 4.100 POV
16	ELOV	2.739 X 4.039 ELOV
13	ELOV	2.739 X 4.039 ELOV
13	FLOV	2.120 X 4.240 FLOV
12	BELLRC	2.130 X 3.730 BELL RC
14	DOV	1.980 X 4.212 D-OVAL
14	FLOV	2.500 X 4.490 FLOV
12	FLOV	2.500 X 4.490 FLOV
12	BELLRC	2.283 X 3.971 BELL RC
11	ELOV	2.440 X 5.240 ELIP OVAL
16	FLOV	2.594 x 4 3/4 FLOV
12	FLOV	2.500 X 4.813 FLOV
12	FLOV	2.250 X 5.750 FLOV
12	TRAP	1.970 X 6.000 TRAP
12	FLOV	2.835 X 5.340 FLOV
12	FLOV	2.900 X 6.200 FLOV
12	DOV	3.794 X 5.150 D-OVAL
12	TRAP	3.386 X 5.494 TRAP
12	BELLRC	2.677 X 5.545 BELL RC
12	OCT	4.783 OCTAGON
12	FLOV	4.605 X 5.480 FLOV
12	DOV	4.650 X 5.694 DOVAL
11	PGRAM	2.774 x 5.534 PGRAM
13	OCT	6.000 OCTAGON
12	OCT	6.000 OCTAGON

Custom Shaped Steel Tubing Applications

Lock Joint Tube makes round and oval specialty tubing (including proprietary custom shapes) for the following industries:

Agricultural
Automotive
Construction

Fence Tubing
Lawn & Garden
Solar

Have a Question?
Our experts can help

Give us a call at 800-257-6859 or leave us a message.