POST-TENSIONING KITS
Active type bonded and unbonded post tensioning systems
4-7-9-12-15-19-22-27-31-37 Strands
1140 kN –10545 kN
Supports 1 to 37 strands, with nominal tensile strengths of 1860 MPa and strand diameters of 15.7 mm or 15.2 mm
Passive type bonded and unbonded post tensioning systems
4-7-9-12-15-19-22-27-31-37 Strands
1140 kN –10545 kN
Supports 1 to 37 strands, with nominal tensile strengths of 1860 MPa and strand diameters of 15.7 mm or 15.2 mm
Coupler type bonded and unbonded post tensioning systems
4-7-9-12-15-19-22-27-31-37 Strands
1140 kN –10545 kN
Supports 1 to 37 strands, with nominal tensile strengths of 1860 MPa and strand diameters of 15.7 mm or 15.2 mm
Flat type bonded and unbonded post tensioning systems
2-3-4-5 Strands
570 kN –1425kN
Supports 2 to 5 strands, with nominal tensile strengths of 1860 MPa and strand diameters of 15.7 mm or 15.2 mm
Mono type active and passive / bonded and unbonded post tensioning systems
1 Strand
285 kN
Supports 1 strand with nominal tensile strengths of 1860 MPa and strand diameters of 15.7 mm or 15.2 mm
HYDRAULIC EQUIPMENTS
>>4 Strands / AMS.MSJ-11033 / 110 Ton Capacity – 330 mm stroke / 15.2 and 15.7 mm
with Hydraulic pump AMS.EPMS-257 / 700 BAR
>>7 Strands / AMS.MSJ-17533 / 175 Ton Capacity – 330 mm stroke/ 15.2 and 15.7 mm
with Hydraulic pump AMS.EPMS-257 / 700 BAR
>>9 Strands / AMS.MSJ-23533 / 235 Ton Capacity – 330 mm stroke/ 15.2 and 15.7 mm
with Hydraulic pump AMS.EPMS-507 / 700 BAR
>>12 Strands / AMS.MSJ-31533 / 315 Ton Capacity – 330 mm stroke/ 15.2 and 15.7 mm
with Hydraulic pump AMS.EPMS-507 / 700 BAR
>>15 Strands / AMS.MSJ-38833 / 388 Ton Capacity – 330 mm stroke/ 15.2 and 15.7 mm
with Hydraulic pump AMS.EPMS-607 / 700 BAR
>>19 Strands / AMS.MSJ-49533 / 495 Ton Capacity – 330 mm stroke/ 15.2 and 15.7 mm
with Hydraulic pump AMS.EPMS-607 / 700 BAR
>>22 Strands / AMS.MSJ-58033 / 580 Ton Capacity – 330 mm stroke/ 15.2 and 15.7 mm
with Hydraulic pump AMS.EPMS-607 / 700 BAR
>>27 Strands / AMS.MSJ-68033 / 680 Ton Capacity – 330 mm stroke/ 15.2 and 15.7 mm
with Hydraulic pump AMS.EPMS-607 / 700 BAR
>>31 Strands / AMS.MSJ-80533 / 805 Ton Capacity – 330 mm stroke / 15.2 and 15.7 mm
with Hydraulic pump AMS.EPMS-607 / 700 BAR
>>37 Strands / AMS.MSJ-97533 / 975 Ton Capacity – 330 mm stroke /15.2 and 15.7 mm
with Hydraulic pump AMS.EPMS-607 / 700 BAR
>>1 Strand / AMS.MSJ-2625 / 26 Ton Capacity – 250 mm stroke / 15.2 and 15.7 mm
with Hydraulic pump AMS.EPMS-257 / 700 BAR
PRE-TENSIONING EQUIPMENTS
AMS.AW SERIES
9,5 mm – 12,70 mm – 15,24 mm and 15,74 mm
- Function: A wedge is used to grip and lock the prestressing strand inside the anchorage system.
- Design: It is a three-piece conical steel component with serrated inner surfaces that match the strand ribs.
- Working Principle: When the strand is tensioned and pulled through the barrel (anchorage), the wedge slides into its tapered seat and grips the strand firmly by radial compression.
- Features:
- Made from hardened alloy steel for strength and wear resistance.
- Provides self-locking action under load.
- Ensures no strand slippage during stressing and after release.
AMS.AH SERIES
9,5 mm – 12,70 mm – 15,24 mm and 15,74 mm
- Function: The barrel is the housing that holds the wedge and transfers the prestressing force to mold and keep stabil the tensioning system.
- Design: Usually a forged or machined cylindrical steel block with a tapered conical hole to receive the wedge.
- Working Principle: The wedge sits inside the barrel; as tension is applied, the wedge grips the strand and the force is transferred from strand → wedge → barrel → Mold Surface
- Features:
- Designed for high compressive strength.
- Works in both active (stressing) and passive (fixed)
- Manufactured with strict tolerances to ensure perfect wedge seating.
AMS.AC SERIES
9,5 mm – 12,70 mm – 15,24 mm and 15,74 mm
- Function: Couplers are used to connect or extend prestressing strands when continuous length is required beyond the standard strand coil or bar length.
- Design: A steel mechanical connector that joins two strands end-to-end.
- Working Principle: The coupler transfers the tensile load across the joint by mechanical gripping, threading, or swaging, ensuring continuity of prestressing force.
- Features:
- Eliminates the need for overlapping strands.
- Provides efficient load transfer without significant loss of prestress.
- Available in different types: threaded couplers, swaged couplers, and sleeve couplers.
AUXILLARY EQUIPMENTS
SR-I-AMS
Amsterdam PT Injection Pump Machines are purpose-built for the reliable and efficient grouting of ducts used in post-tensioning systems as well as other similar construction applications. These machines are specifically engineered to inject grout into voids and cavities within ducts, ensuring complete filling, enhanced durability, and long-term structural performance. Designed for versatility, they can be applied not only in post-tensioning projects but also in a wide range of civil engineering works where controlled grout injection is required. With their robust design and practical operation, Amsterdam PT injection pumps provide consistency, ease of use, and high-quality results across diverse construction environments.
SR-P-AMS
Amsterdam PT strand pushing machines are engineered for quick and efficient insertion of prestressing strands into ducts, such as galvanized corrugated ducts. Designed for single-operator use, they greatly reduce manual effort while boosting productivity. By streamlining strand placement, these machines deliver higher accuracy, faster installation, and cost-effective performance, making them ideal for demanding projects like bridges, high-rises, and other large-scale concrete structures.
GALVANIZED CORRUGATED DUCTS
AMS.GCD Series
4-7-9-12-15-19-22-27-29-31 Strands
>>4 Strands
Galvanized Corrugated Duct 45 x 50 – 0.40 / Length : 5.70 mt
Galvanized Corrugated connector 50 x 55 – 0.40 / Length : 0.30/0.40/0.50 mt
>>7 Strands
Galvanized Corrugated Duct 55 x 60 – 0.40 / Length : 5.70 mt
Galvanized Corrugated connector 60 x 65 – 0.40 / Length : 0.30/0.40/0.50 mt
>>9 Strands
Galvanized Corrugated Duct 70 x 75 – 0.40 / Length : 5.70 mt
Galvanized Corrugated connector 75 x 80 – 0.40 / Length : 0.30/0.40/0.50 mt
>>12 Strands
Galvanized Corrugated Duct 80 x 85 – 0.40 / Length : 5.70 mt
Galvanized Corrugated connector 85 x 90 – 0.40 / Length : 0.30/0.40/0.50 mt
>>15 Strands
Galvanized Corrugated Duct 90 x 95 – 0.40 / Length : 5.70 mt
Galvanized Corrugated connector 95 x 100 – 0.40 / Length : 0.30/0.40/0.50 mt
>>19 Strands
Galvanized Corrugated Duct 95 x 100 – 0.40 / Length : 5.70 mt
Galvanized Corrugated connector 100 x 105 – 0.40 / Length : 0.30/0.40/0.50 mt
>>22 Strands
Galvanized Corrugated Duct 110 x 115 – 0.40 / Length : 5.70 mt
Galvanized Corrugated connector 115 x 120 – 0.40 / Length : 0.30/0.40/0.50 mt
>>27 Strands
Galvanized Corrugated Duct 115 x 120 – 0.40 / Length : 5.70 mt
Galvanized Corrugated connector 120 x 125 – 0.40 / Length : 0.30/0.40/0.50 mt
>>31 Strands
Galvanized Corrugated Duct 120 x 125 – 0.40 / Length : 5.70 mt
Galvanized Corrugated connector 125 x 130 – 0.40 / Length : 0.30/0.40/0.50 mt
Galvanized corrugated ducts are protective metal sheaths, manufactured from galvanized steel sheets with a corrugated profile, used in post-tensioning and similar structural applications to create a durable channel for housing prestressing strands. The standard lengths of Amsterdam PT galvanized corrugated ducts are 5.70 or 6.00 meters, and they are connected to each other using galvanized corrugated duct connectors, which are additionally supplied by Amsterdam PT. During the connection process, alloy tapes resistant to external environmental effects must be used, as their application is essential to provide the correct conditions for proper installation.
