Rock Bolt/ Soil Nail System

because our rolled thread and unique Thread Bar not only keep the same cross section area of the steel bar, but also increase its hardness and strength.

The system guarantees Full Performance.


can resist higher load than the conventional cut-thread ones

Type of Rock Bolt

• Deformed Bar Rock Bolt

• Thread Bar Rock Bolt

• Mechanical Rock Bolt

• Split Set Rock Bolt

• GFRP Rock Bolt

 Thread System

NOVOCON Rock Bolts are produced under strict quality control in two types of thread profiles:

  1. Standard Thread: conforms to ISO, UNC or DIN standards. Rolled thread is known as the stronger thread than  conventional cut one.

  2. Thread Bar: is manufactured under Thai Industrial Standard (TIS). This special type of thread is the special coarse thread. Its big advantage is that customers can cut and connect it anywhere just by a coupler and a nut.

Various Sizes

NOVOCON Rock Bolts are available in size Ø16 mm, 20 mm, 25 mm, 28 mm, 32 mm, and 40 mm. The full standard lengths are 10 and 12 meters. The longer length can be obtained by using mechanical connector (coupler).

Rock Bolt can be protected from corrosion by various means such as hot-dip galvanized, epoxy coated or as specified.

          Corrosion Protection

Range of Product




Reinforced Bar Rock Bolts

• Deformed Bar (DB)

• Thread Bar ("ONE Bar" or "NTB")

Hot-rolled reinforcing bar

• Size Ø16 – 40 mm

• DB grade SD40, SD50

• Thread Bar grade SD40, SD50

   Length to orde


Dome Plate





Bevel Dome Plate






(Flat Plate)





Spherical or Dome Washer

Various size of plates

• 150 x 150 x 6 mm.

• 150 x 150 x 8 mm.

• 150 x 150 x 10 mm.

• 150 x 150 x 12 mm.

• 150 x 150 x 15 mm.

• 150 x 150 x 20 mm.

• 200 x 200 x 15 mm.

• 200 x 200 x 20 mm.

• or as specified.




Shape and size

• Typical 47 x 22 mm.

• Parabolic shape

• Center hole is required.

 Hex Nut for Thread Bar

• Hexagonal head nut for thread bar

• Availble in TB20 - TB40

Spherical or Dome Nut

• Forged steel for deformed bar

• Cast Iron for thread bar

Hex Nut

• Standard Hexagonal Nut

• Used for deformed bar

Mechanical Shell

(Bail Type)

High pull out resistance up to full capacity of anchor bar.

• size M16 - M32

• size UNC 5/8" - 1-1/4"


• Available for size Ø16 – Ø40 mm

Contact Us

Our Products

Follow Us

Office : 02-328-2250-2

Fax : 02-328-2253

Email :

  NOVOCON Co., Ltd.

39/1 Soi 38, Chalerm Prakiat R.9 Rd.,

  Nongbon, Prawet, Bangkok 10250

Form Tie System

Tension Rod System

Rock Bolt

Anchor Bolt

Thread Bar "ONE-Bar"

Lifting System

GFRP Rebar

Custom Made to Order