PT Anchorages

PT Anchorages are carefully designed steel anchors that work behind the scenes, channeling powerful forces from prestressing tendons straight into the core of our structures. Whether discreetly concealed or elegantly showcased, these anchors serve as the steadfast support that keeps bridges, stadiums, and buildings resilient and reaching new heights. Next time you gaze at a concrete marvel, take a moment to appreciate the subtle strength of these unsung champions.

  • Anchor Cone
  • Anchor Head
  • Wedges
PT Anchorages

Anchor Cone (Tube Unit)

The Anchor Cone helps transfer the force from the Anchor Head to the concrete segment. It guides the high-tension strand into the duct, ensures a good fit, and allows for easy grout injection. This component is typically made of Cast Iron and is commonly used in prestressed concrete segments and girders.

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Anchor Cone (Tube Unit)

Anchor Cone (Tube Unit)

Technical Specification

Sr.No. (mm) HTS Size Anchor Cone (code) TD Top ID (mm) BD Bottom ID (mm) BS Bottom Surface (mm) L Length (mm)
1 12.70 KTC 4KT13 (R) 52 70 145 120
2 KTC 7KT13 (R) 55 75 170 140
3 KTC 12KT13 (R) 94 100 190 115
4 KTC 19KT13 (R) 100 125 247 155
5 KTC 27KT13 (R) 115 150 305 230
6 15.20 KTC 4KT15 (R) 55 75 170 140
7 KTC 7KT15 (R) 94 100 190 115
8 KTC 12KT15(R) 100 125 247 155
9 KTC 19KT15 (R) 123 150 290 200
10 KTC 27KT15 (R) 165 225 350 350

Anchor Head

Anchor heads stand as the critical link between strength and stability in construction. They serve as the connection point for prestressing tendons, anchoring the force that fortifies our structures. We prioritize precision and durability in the design and production of anchor heads, ensuring they play a pivotal role in the structural integrity of bridges, buildings, and other architectural marvels. With our anchor heads, your construction projects gain a reliable foundation, embodying the strength necessary for structures to withstand the test of time.

Bearing Plate

Bearing Plate

The Anchor Head is positioned on the flat surface of the Anchor Cone, providing a secure location for wedges. Tapered holes within the Anchor Head ensure the proper placement of wedges and the tensioning of strands. Each individual tensile element is held in place by a wedge, allowing the transfer of prestressing load to the Anchor Head. Typically, the Anchor Head is employed in prestressed concrete segments and girders.
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Barrel Mono

Barrel - Mono

The Barrel Anchor Head is a commonly employed component in the field of mono strand prestressing and tensile testing machinery. It plays a vital role in these applications, ensuring the efficient and secure handling of tensioned strands.
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Bearing Plate

Technical Specification

Sr.No. HTS Size (mm) Anchor Head (code) D Diameter (mm) T Thickness (mm) Conical Holes (Nos)
1 12.70 KTC 4KT13 (R) 80 40 4
2 KTC 7KT13 (R) 100 40 7
3 KTC 12KT13 (R) 130 50 12
4 KTC 19KT13 (R) 160 60 19
5 KTC 27KT13 (R) 200 75 27
6 15.20 KTC 4KT15 (R) 120 45 4
7 KTC 7KT15 (R) 150 50 7
8 KTC 12KT15 (R) 160 50 12
9 KTC 19KT15 (R) 200 60 19
10 KTC 27KT15 (R) 230 80 27

Barrel - Mono

Technical Specification

Sr.No. HTS Size Barrel (code) L Length (mm) D Diameter (mm) Conical Holes
1 12.70 KTB 13-50 50 50 As per Gauge
2 KTB 13-55 55 55
3 15.20 KTB 15-50 50 60
4 KTB 15-60 60 60

Wedges

Wedges consist of conical-shaped components that are divided into three equal parts and secured around the strand using specialized wire circlips. The concave portion of each slit features threading that functions like a jaw, ensuring secure locking after undergoing stress. To attain exceptional quality and strength, precise hardening and tempering treatments are meticulously applied.

Live Wedges

Live Wedges

Live Wedges are used for post-tensioning systems. Generally used in Girders, Slabs etc.
  • Single Use Live Wedges
  • Multi Use Live Wedges.
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Master Wedges

Master Wedges

Master Wedges can be used multiple times and for heavy tensile systems. Generally used in Pre-tensioning, Hydraulic Mono Jack, HT strand Tensile Test and ete.
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Live Wedges

Technical Specification - Anchorages System

Sr.No. HTS Size Anchor type UTS (Tons) 75% UTS Duct Dia Anchor Cone Size Anchor Cone Length Pocket (Recess) Min.Edge Distance Anchorages Spacing Between Anchorages Pocket Depth PCD of Anchor Fixing Holes Anchor Head Dia Anchor Head Thickness Spiral Bar Details
Spiral Dia Spiral Length Pitch Length No. of Turns Spiral Bar Dia
A B C DxD E F G H I J K L M N od
1 HTS DIA 12.7 mm 4K13 75 56 50 145 120 215 120 220 105 130 80 40 150 240 40 6 16
2 7K13 131 98 63 170 140 240 120 220 105 150 100 40 180 240 40 6 16
3 12K13 225 169 92 190 140 270 148 260 120 165 130 50 200 480 60 8 16
4 19K13 356 267 97 247 155 330 198 325 120 200 160 60 250 540 60 9 16
5 27K13 506 380 120 305 230 380 295 485 120 275 200 75 300 600 60 10 20
7 HIS DIA 15.2 mm 4K15 106 80 63 170 140 240 120 220 120 150 120 45 180 480 60 8 16
8 7K15 186 140 92 190 140 270 148 260 120 165 150 50 200 480 60 8 16
9 12K15 319 239 97 247 155 330 200 300 120 200 160 50 250 540 60 9 16
10 19K15 505 379 120 290 200 360 213 350 120 235 200 60 300 600 60 10 20
11 27K15 718 539 160 350 350 430 340 575 130 285 230 80 360 720 60 12 20

Master Wedges

Technical Specification - Anchorages System

Sr.No. HTS Size Anchor type UTS (Tons) 75% UTS Duct Dia Anchor Cone Size Anchor Cone Length Pocket (Recess) Min.Edge Distance Anchorages Spacing Between Anchorages Pocket Depth PCD of Anchor Fixing Holes Anchor Head Dia Anchor Head Thickness Spiral Bar Details
Spiral Dia Spiral Length Pitch Length No. of Turns Spiral Bar Dia
A B C DxD E F G H I J K L M N od
1 HTS DIA 12.7 mm 4K13 75 56 50 145 120 215 120 220 105 130 80 40 150 240 40 6 16
2 7K13 131 98 63 170 140 240 120 220 105 150 100 40 180 240 40 6 16
3 12K13 225 169 92 190 140 270 148 260 120 165 130 50 200 480 60 8 16
4 19K13 356 267 97 247 155 330 198 325 120 200 160 60 250 540 60 9 16
5 27K13 506 380 120 305 230 380 295 485 120 275 200 75 300 600 60 10 20
7 HIS DIA 15.2 mm 4K15 106 80 63 170 140 240 120 220 120 150 120 45 180 480 60 8 16
8 7K15 186 140 92 190 140 270 148 260 120 165 150 50 200 480 60 8 16
9 12K15 319 239 97 247 155 330 200 300 120 200 160 50 250 540 60 9 16
10 19K15 505 379 120 290 200 360 213 350 120 235 200 60 300 600 60 10 20
11 27K15 718 539 160 350 350 430 340 575 130 285 230 80 360 720 60 12 20

Approved by

National Highway authority of India(NHAI)
Various Metro Corporations
Various State Road Development Authorities
Others....

Tested and passed by 3rd Party Test Laboratories

Indian Institute of Technology (IIT) – Chennai
AnuLab Industrial Testing & Analytical Laboratories, Agra

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