Upvc Specifications

uPVC Profiles

The profiles for windows and doors are made of high impact hard PVC. They are manufactured through the extrusion of a mixture of thermoplastic polymer, polyvinyl chloride (PVC) as the main component and various additives.

The material bases for raw PVC are ethylene and salt. Ethylene is manufactured from oil feedstock or LNG and chlorine manufactured from Natrium Chloride (salt). Ethylene and chlorine react to form vinyl chloride, a chemical gas which through polymerization produces PVC. The resulting product is a white powder. To increase the impact strength PVC for window profiles is mixed with an acrylic ester to form a copolymer. The copolymer is mixed with additives to improve:

  • Mechanical strength, rigidity and hardness
  • Impact strength with notch sensitivity
  • Thermal stability for applicable in the temperature range from – 30°C to 70°C
  • Abrasion resistance
  • Flame –resistant and self-extinguishing when away from
  • the flame
  • Chemical and weather resistance
  • Weldability
  • Dimensional stability

Physical properties of uPVC

Bulk Density (Specific Weight) 1.41 – 1.46 g/cm²
Tensile strength 44 N/mm²
Elongation elasticity coefficient ≥2.220 N/mm²
Impact strength (RT) ≥20 KJ/m²
Impact resistance (- 40oC) No rupture
Linear expansion coefficient 0.8x10-4/°K
Vicat softening temperature 78-82°C (Depending on the applied formula) Colour change should not go beyond level 4 of the grey
Weather resistance scale in accordance with ISO 105- A 03

Performance of windows

The windows comply to DIN 18055 or BS 6375: Part 1. The actual performance achieved depends on window style, design and size as well as profile combination used.

Air Permeability

The air permeability shall be tested in accordance with BS 5368: Part 1, EN 42. The value shall be as small as possible to avoid energy loss for e.g. air conditioning, maximum 1m3/m/hr at an air pressure of 10 Pa. typical value for VEKA tilt and turn windows, casements is 0.1m3/m/hr.


The water tightness is tested in accordance with BS 5368: Part 2 EN 86. There shall be no leakage at a certain wind pressure, amount of sprayed water and time. Typical classification for tilt and turn is group B and C, 300 and 600 Pa.

Wind Resistance

The wind resistance is tested in accordance with BS 5368: Part 3, EN 77. The maximum allowed deflection is 1/300 or 8mm between two edges of an insulating glass unit. Gust of wind is a repeated test (50 times) at +- 1,000 Pa for classification “C”. There shall be no permanent residual deformation, damage, or functional defects.

Thermal Insulation

The thermal insulation value is an important factor to save energy for heating and air-conditioning. The VEKA multichambered profiles have a U-value of 1.4- 1.8 W/m2K. Using single, double or specially treated glass units the U-values range between 6.0-1.0 W/m2K where the smaller value is the better one.

Sound Insulation

The double sealed window design (inside and outside weather stripping) along with the reinforced multichambered profiles results in excellent sound insulation. Depending on the chosen glass unit the reduction is Rw 30 dB-42 dB for e.g. noisy city centers.

Fire Classification

uPVC is classified as self-extinguishing. The VEKA material has been tested to BS 476: Part 7. It has a class one surface spread of flame. VEKA windows have been used for many years in high rise buildings in many countries in the world e.g. Jinan/China, Abu Dhabi/UAE, besides Europe.

Tilt & Turns, French, Side Hung Window

Maximum sash area is 2.1 m2

Maximum sash width 1300 mm

Maximum sash height 2150 mm


Bottom and Top Hung

Bottom hung and top hung windows are mainly recommended for rest rooms where only ventilation is required. For these windows fix removable type fly screens are recommended if required.


Sliding elements are smooth running, durability, easy operation and handling. Quiet and smooth running of the sash is ensured by bogies with premium needle roller bearings which can bear sashes of up to 140 kg in different designs. The sliding elements are locked by means of a standard window handle. Special drive rods with back sets of 7.5 mm and 15.5 mm are used to enable a positive mushroom-head closure between the frame and the sash materials.

  Minimum Maximum
Sash width 600 mm 2,000 mm
Sash height 650 mm 2,400 mm
Sash size   4.8 m²
Sash weight   180 kg

Tilt and Slide

Panorama tilt and sliding system is designed for safe opening and closing of the window for ventilation and cleaning. The excellent sealing ensure high protection against rain, damp, thermal, sound, and draft insulation due to excellent sealing properties. Burglar resistant fittings are optional for customers requiring special protection.

  Minimum Maximum
Sash width 600 mm 1,650 mm
Sash height 420 mm 2,300 mm
Sash size   4.8 m²
Sash weight   150 kg
Panorama provides:
  • 10 years warranty on PVC profiles and panels
  • 10 years warranty on all products against product defects caused by Panorama

uPVC Plant and Machineries

  • Double Headed Mitre Saw manufactured by Rotox GmbH, Germany. This machine is used for cutting the uPVC profile in the programmed size and angle
  • Circular Metal Saw manufactured by Pedrazzoli, Ital- used for cutting the steel profiles used in uPVC reinforcement.
  • Copy Router manufactured by Rotox GmbH, Germany. This machine is used for handle and key slot making in the profiles.
  • Drain Slot Milling Machine made by Rotox GmbH, Germany used for making slots in the profiles to drain the rain water from the windows.
  • End Milling Machine manufactured by Rotox GmbH, Germany used for milling the mullion at one end.
  • Two Headed Welding Machine manufactured by Rotox GmbH, Germany used for welding of profiles at two ends for e.g. manufacturing of arch elements.
  • One Headed Welding Machine manufactured by Rotox GmbH used for welding the arch elements with angle cuttings.
  • Four Headed Welding Machine manufactured by Actual Machinenbau AG Austria. All the four corners of the windows and doors can be welded in 48 seconds.
  • CNC Corner Cleaning Machine manufactured by Actual Machinenbau AG Austria. This machine cleans the welded joints automatically.
  • Glazing Bead Saw manufactured by Rotox GmbH, Germany. This machine is used to cut glazing beads in the size required
  • Profile Heating and Bending Machines manufactured by Fux Machinenbau G.m.b.H, Austria. The machines include one furnace to heat the profiles and a bending table with accessories to bend profiles to the desired shape for making arch windows.
  • Stationary Screw Driver with automatic screw feed manufactured by GEVO GmbH, Germany. The machine is used to screw steel reinforcement to uPVC profiles

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