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PTFE/PFA Thin wall hoses

Technical specifications

Standard product range consists of a set of thin wall tubes made by using natural PTFE raw material. Inside diameter: from 1 mm to 25 mm. Wall thickness: from 0,5 mm to 3,0 mm. Length: based on diameter and wall thickness. For market most requested diameters, standard length coils are supplied: from 25 meters to 50 and 100 meters. Owing to state of the art technology plants is able to produce, for some diameters, coils with lengths that can vary from 150 to 1,000 meters..

Industrial sectors

Fluid, gas and other materials transport industry; Electronic and electrical industry; Automotive and motorcycle industry; Semiconductor industry; Generic industry.

Upon request can produce TWT with custom specifications such as: diameter and tolerance as requested by the client’s drawing, calibrated outside diameter, FDA raw materials, pigmented raw material available in several colours (ROHS), anti-static and/or special additive fi lled raw materials, different shape sections, tubes cut at specifi c measure and/or treated as requested by the client’s drawing.

Maximum excentration tolerance

 

Pressure and temperature

Wall thickness (mm) Maximum excentration tolerance (mm)
0,5 0,1
1 0,15
1,5 0,17
2 0,2
2,5 0,25
3 0,3
 
Effect of temperature on pressure resistance
T(°C) P(%)
23° 100
50° 85
100° 65
150° 50
200° 35
Working pressure is 1/3 of the burst pressure.

Maximum excentration tolerance

ID (mm) OD (mm) Weight (Kg/m) Burst pressure (MPa a 23°C) Radius of curvature (mm)
1,0 2,0 0,005 2 8
1,0 3,0 0,014 19 9
1,5 2,5 0,007 8 13
1,5 3,0 0,012 12 12
1,5 3,5 0,017 16 12
2,0 3,0 0,009 6 18
2,0 4,0 0,020 12 16
2,5 3,5 0,010 4,5 25
2,5 4,0 0,017 7 18
2,5 5,0 0,032 10 20
3,0 4,0 0,012 4 32
3,0 5,0 0,027 8 25
3,0 6,0 0,046 12 24
4,0 5,0 0,015 3 50
4,0 6,0 0,034 6 36
4,0 7,0 0,056 9 33
4,0 8,0 0,081 12 32
4,5 6,5 0,037 5 41
5,0 6,0 0,018 2 50
5,0 7,0 0,041 4,5 49
5,0 8,0 0,066 7 43
5,0 9,0 0,055 9,5 41
6,0 7,0 0,022 2 98
6,0 8,0 0,048 6 64
6,0 9,0 0,076 8 54
6,0 10,0 0,109 10 50
6,5 9,5 0,081 4 60
7,0 9,0 0,054 3 81
7,0 12,0 0,087 5 67
7,5 9,5 0,058 3 90
 
ID (mm) OD (mm) Weight (Kg/m) Burst pressure (MPa a 23°C) Radius of curvature (mm)
8,0 9,0 0,029 1,5 162
8,0 10,0 0,061 3 100
8,0 12,0 0,136 6 72
9,0 10,0 0,032 1 205
9,0 11,0 0,068 2,5 120
9,0 12,0 0,107 4 85
10,0 11,0 0,036 1 242
10,0 12,0 0,075 2 144
10,0 13,0 0,116 3,5 113
10,0 14,0 0,162 4,5 98
11,0 13,0 0,081 2 145
12,0 14,0 0,878 2 196
13,0 15,0 0,095 1,5 225
14,0 16,0 0,101 1,5 256
15,0 17,0 0,108 1,5 289
15,0 18,0 0,167 2 216
16,0 18,0 0,115 1,5 324
16,5 19,5 0,182 2 254
17,0 20,0 0,187 2 267
18,0 20,0 0,128 1,3 400
18,0 22,0 0,270 2,5 242
19,0 22,0 0,208 1,5 323
20,0 22,0 0,142 1 325
20,0 24,0 0,297 2 288
21,0 24,0 0,228 1,5 384
22,0 24,0 0,155 1 576
24,0 27,0 0,258 2 486
24,5 27,0 0,217 1 583
25,0 28,0 0,268 1 523

Inside diameter tolerance

Diameter (mm) Tolerance (mm)
1 < d ? 2,5 ± 0,15
2,6 < d ? 5 ± 0,2
5,1 < d ? 7 ± 0,25
7,1 < d ? 10 ± 0,3
 
Diameter (mm) Tolerance (mm)
10,1 < d ? 15 ± 0,35
15,1 < d ? 20 ± 0,4
20,1 < d ? 30 ± 1

PTFE TWT - Standard dimensions and property table

Technical specifications Unit of measure Test methods (ASTM) PTFE PFA
Physical
Specific gravity gr/cm2 D792 2,16 2,15
Appearance Transluced White Transparent
Water permeability % D570 <0,01 <0,03
Mechanical
Tensile Strength Kg/cm2 D638
D1708
250-300 280
Elongation at break % D638 250-400 300
Modulus of elasticity MPa D747 440 a520 650
Hardness Shore D D2240 55-65 60-65
Thermal
Melting point °C +327° +310°
Maximum operating temperature °C +260° +260°
Minimum operating temperature °C -60° -60°
Electrical
Dielectric strength KV/mm D149 80 80
Dissipation factor 0,0003 0,00075
Chemical
Chemical resistance Excellent Excellent
Endurance to atmospheric pitting corrosion Excellent Excellent

PFA tubes

Technical specifications

PFA standard tubes are made by using high molecular weight and very pure natural PFA raw material. Inside diameter: from 2 mm to 25 mm. No length limit. Packaging in coils or on rolls.

Industrial sectors

• Fluid, gas and other materials transport industry • Semiconductor industry • Healthcare industry • Electronics. Upon request PFA tubes can also be produced with custom specifications such as: diameter and tolerance as shown by the client’s drawing, various shape sections, hoses cut to specific measure and/or treated as shown by the client’s drawing.

PFA Tubes – Imperial standard dimensions range table

Description Outside diameter (mm) Tolerance (mm) Inside diameter (mm) Thickness (mm) Tolerance (mm) Weight (g/m)
Tubo 1/4" S 6,35 +0,076/-0,127 4,35 1 +0,125/-0,102 36,1
Tubo 1/4" 6,35 +0,076/-0,127 3,21 1,57 +0,125/-0,102 50,7
Tubo 3/8" 9,52 +0,076/-0,127 6,37 1,57 +0,125/-0,102 84,5
Tubo 1/2" 12,7 +0,076/-0,127 9,56 1,57 +0,125/-0,102 118
Tubo 3/4" 19,05 ±0,125 15,91 1,57 +0,125/-0,102 185,4
Tubo 1" 25,4 ±0,125 22,26 1,57 ±0,125 252,7

PFA Tubes – Metric standard dimensions range table

Description Outside diameter (mm) Tolerance (mm) Inside diameter (mm) Thickness (mm) Tolerance (mm) Weight (g/m)
Tubo 2x4 4 ±0,1 2 1 ±0,1 20,3
Tubo 4x6 6 ±0,1 4 1 ±0,1 33,8
Tubo 6x8 8 ±0,1 6 1 ±0,1 47,3
Tubo 8x10 10 ±0,1 8 1 ±0,1 60,8
Tubo 10x12 12 ±0,1 10 1 ±0,1 74,3
Tubo 12x14 14 ±0,1 12 1 ±0,1 87,8

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