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Steel Supply Company Serving St. Clairsville, OH

Products

We stock hard to find and oddball material. Whether you haven’t found what you need elsewhere or are looking for the first time, call Knowlton Industrial Steel Supply. We have a motto:
NO JOB IS TOO BIG OR TOO SMALL...WE WANT TO BE YOUR STEEL COMPANY!

STEEL STRUCTURALS - Grades ASTM A36,

ASTM A992/ A572 

  • ANGLE
    • Bar Size
    • Structural 
  • BEAMS
    • Standard I
    • Junior
    • Wide Flange/H
  • CHANNEL
    • Bar Size
    • Ship & Car
    • Structural
  • HALF ROUNDS
  • TEES
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STRUCTURAL STEEL

BAR STOCK

  • COLD FINISH  CARBON STEEL BAR
    • Grades include 1018 CF, 1045 CF, 1045 CF TGP, 1144 SP, 12L14 CF, 1215 CF
      • Flats
      • Hexagon
      • Rounds
      • Squares
  • HOT ROLLED CARBON STEEL BAR
    • Grades include A36, 1018 HR, and 1045 HR
      • Flats
      • Rounds
      • Square
  • ALLOY BAR
    • Grades includes 4140 HR Ann, 4140 CF Ann, 41L40, 4140 CF HT, 4140 HR HT, 4150 EG&P
      • Flats
      • Rounds
      • Squares
  • CHROME PLATED CARBON STEEL BAR
    • Rounds
  • TOOL STEEL BAR
    • Flats
    • Rounds
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BAR STOCK

PIPE and TUBING

  • PIPE - CARBON STEEL
    • Pressure Tested Pipe (ASTM A5)
    • T and C Pressure Tested Pipe
    • Structural Pipe (ASTM 500)
  • TUBE
    • Square Tubing
    • Rectangular Tubing
      • Seamless
    • Round Mechanical Tubing
      • CDS – Cold Drawn Seamless
      • DOM – Drawn Over Mandrel
      • ERW – Electric Resistance Welde​​
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PIPE  & TUBING

SHEET and PLATE

  • SHEET
    • Hot Rolled Sheet
    • Cold Finished Sheet
    • Aluminized Sheet
    • Galvanized Sheet
  • PLATE
    • A 36
    • 1010
    • 1020
    • A 514 (T-1)
    • A 516 Grade 70
    • A 571 Grade 50
    • A 588 Cor-Ten
    • AR 235
    • AR 400 – AR 400 F
    • AR 500
    • DOMEX 100 F
  • FLOOR PLATE – Deck PLATE

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PLATES
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SHEETS

SPECIALTY GRATING and HOLE PRODUCTS

  • ​BAR GRATING – Smooth and Serrated
  • EXPANDED METAL SHEET – Standard and Flattened
  • GRIP STRUT
  • PERFORATED METAL
  • TREAD GRIP LADDER RUNGS
  • TRACTION TREAD
  • WIRE CLOTH – Woven and Welded

SPECIALTY CONCRETE PRODUCTS

  • ANCHOR BOLTS AND WEJ-IT ANCHOR
  • ADJUSTABLE PIPE COLUMNS
  • B-DECKING
  • CONCRETE REINFORCING MESH (MATS)
  • REBAR – REINFORCING ROD

THREADED ROD – ALL THREAD

  • Grades include Low Carbon, Zinc, B-7 and Stainless Steel
    • Coarse Thread
    • Fine Thread
    • ACME Thread
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ACCESSORIES

PIPE FITTINGS – THREADED, WELDED and

SOCKET WELD

  • ​Schedule 40 and Schedule 80
    • 45’s
    • 90’s
    • T’s
    • Couplers
    • Nipples
    • Reducers
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WELDING SUPPLIES

BOLTS, NUTS AND WASHERS​

  • ​Grades include Zinc, Grade 5, Grade 8 and Stainless Steel
    • Coarse Thread
    • Fine Thread
    • ACME Thread

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WELDING SUPPLIES

IN ADDITION TO OUR HUGE STEEL INVENTORY, WE ALSO HAVE IN STOCK:​

ALUMINUM
Angle
Beams
Channel
Expanded Metal
Flat Bar
Hexagon
Round Bar
Square Bar
Plate
Sheet
Pipe
Tubing:
     - Round
     - Square
     - Rectangle
BRASS
Flat Bar
Hexagon
Round Bar
Square Bar











BRONZE
Tubing














COPPER
Flat Bar
Round Bar













CAST IRON
Round Bar














STAINLESS STEEL
Angle
Channel
Expanded Metal
Flat Bar
Hexagon
Round Bar
Square Bar
Plate
Sheet
Pipe
Tubing:
     - Round
     - Square
     - Rectangle

SPECIALTY ACCESSORIES – THIS IS A MUST SEE WALL- YOU’LL BE IMPRESSED!

CHAIN – GRADE 70
CASTOR WHEELS
U BOLTS
D-RINGS
EYE BOLTS
EYE NUTS
FLANGES
BULLET HINGES
CONTINUOUS HINGE
HOOKS
LIFTING STRAPS
MAGNETS (3 SIZES)
PINTAL HITCHES
RATCHET STRAPS
RATCHET BINDERS
TRAILER BALL and HITCHES
TRAILER FENDERS​
SNAPPER PINS
SPUD BARS
CROW BARS
YOKE ENDS
CUT OFF WHEELS
FLAP DISC
GRINDING WHEELS
CHOP SAW BLADES
GRINDING PLUGS
GRINDING STONES
BEAD BRUSHES
KNOT BRUSHES
RADIUS MARKER
PLATE BUGS
LIFTING EYES
TROLLEYS
PIPE WRAPS
HOUGEN MAG DRILLS
DRILL BITS
DRILL BIT SETS
HOLE BITS
SLUGGER BITS
PUNCH BITS
REAMERS
COUNTERSINK BITS
WORK GLOVES
LIGHT BOXES
SAFETY GLASSES
FACE SHIELDS
WELDING HELMETS
LENS
WELDING ROD and WIRE
FUN COLORFUL WELDING CAPS
ELECTRIC CORDS
This is just Small sampling...
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WELDING CAPS
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WELDING HELMETS / GRIDING DISCS