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Specialty Structural Steel Tubing

Specialty Structural 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”.

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Specialty 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:

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