Products Description

PTFE Bellows: these aren't just pipes, they're the guardians of your most demanding chemical and temperature processes. Thanks to their exceptional resistance to corrosion, extreme temperatures, and low friction, PTFE Bellows are critical components across industries – from chemical processing and pharmaceuticals to electronics and food production. They excel in pipeline systems by compensating for thermal expansion, isolating vibrations, and providing unparalleled corrosion protection, extending system lifespan by up to 30% in harsh environments.
Polytetrafluoroethylene (PTFE) is a fluoropolymer celebrated for its superior chemical inertness, high-temperature endurance, and excellent electrical insulation. When formed into a flexible corrugated design, PTFE Bellows not only offer excellent flexibility and sealing capabilities, but also accommodate various movements and deformations within piping systems. This corrugated structure enhances flexibility and elasticity, enabling these bellows to absorb stresses caused by temperature distortions and mechanical vibrations, ultimately ensuring greater system integrity.
A primary advantage of PTFE Bellows lies in their exceptional corrosion resistance. They confidently withstand aggressive substances like strong acids, alkalis, and oxidizers, making them perfectly adapted for harsh environments where long-term reliability is non-negotiable. Also, their non-stick surface prevents buildup, simplifying cleaning and reducing maintenance downtime. With the ability to withstand temperatures up to 260°C, they excel in high-temperature applications. Additionally, their superior electrical insulation unlocks specialized applications in electronics and electrical industries.
Regarding connection, are typically welded or mechanically attached to pipeline systems, producing robust seals and consistent performance. They are easily custom-engineered, providing diverse sizes, corrugation counts, and expansion ranges for specialized project needs. Their innate flexibility allows them to deftly compensate for linear and angular displacements, mitigate vibrations and shocks, and reduce mechanical stress effectively.
These innovative bellows thrive within challenging environments – including chemical reactors, corrosive acid or sulfuric acid transfer lines, vacuum systems, electronics manufacturing equipment, and pharmaceutical production lines. Thanks to their steadfast and dependable performance, provide vital support for maintaining the safety and efficiency of systems operating under extreme conditions.
Concluding, PTFE Bellows showcase exemplary performance as corrosion-resistant, high-temperature, highly flexible piping components. They adeptly manage challenges such as thermal expansion and vibration while offering unmatched chemical protection. As technology advances, increased utilization of PTFE Bellows promises to deliver even safer, greener, and more efficient industrial processes across numerous sectors.
Product parameters

|
Part Number |
Size |
Convolution Number |
Length |
Movement |
Nominal Diameter |
|
|
Axial |
Lateral |
|||||
|
(mm) |
PN(MPa) |
|||||
|
PEJ25×3 |
DN25 |
3 |
95 |
+21/-14 |
10 |
0.6 |
|
PEJ25×5 |
DN25 |
5 |
130 |
+30/26 |
10 |
0.6 |
|
PEJ32×3 |
DN32 |
3 |
95 |
+20/-16 |
12 |
0.6 |
|
PEJ32×5 |
DN32 |
5 |
132 |
+30/-26 |
16 |
0.6 |
|
PEJ40×3 |
DN40 |
3 |
100 |
+22/-20 |
14 |
0.6 |
|
PEJ40×5 |
DN40 |
5 |
140 |
+32/-28 |
18 |
0.6 |
|
PEJ50×3 |
DN50 |
3 |
106 |
+22/-17 |
17 |
0.6 |
|
PEJ50×5 |
DN50 |
5 |
160 |
+33/-35 |
22 |
0.6 |
|
PEJ65×3 |
DN65 |
3 |
105 |
±20 |
16 |
0.6 |
|
PEJ65×4 |
DN65 |
4 |
131 |
±27 |
21 |
0.6 |
|
PEJ65×5 |
DN65 |
5 |
154 |
±34 |
23 |
0.6 |
|
PEJ65×6 |
DN65 |
6 |
183 |
±41 |
25 |
0.6 |
|
PEJ80×3 |
DN80 |
3 |
110 |
±20 |
16 |
0.6 |
|
PEJ80×4 |
DN80 |
4 |
137 |
±27 |
21 |
0.6 |
|
PEJ80×5 |
DN80 |
5 |
164 |
±34 |
23 |
0.6 |
|
PEJ80×6 |
DN80 |
6 |
191 |
±41 |
25 |
0.6 |
|
PEJ100×3 |
DN100 |
3 |
115 |
±25 |
16 |
0.6 |
|
PEJ100×4 |
DN100 |
4 |
143 |
±32 |
21 |
0.6 |
|
PEJ100×5 |
DN100 |
5 |
171 |
±39 |
23 |
0.6 |
|
PEJ100×6 |
DN100 |
6 |
199 |
±46 |
25 |
0.6 |
|
PEJ125×3 |
DN125 |
3 |
123 |
±27 |
15 |
0.6 |
|
PEJ125×4 |
DN125 |
4 |
154 |
±34 |
21 |
0.6 |
|
PEJ125×5 |
DN125 |
5 |
185 |
±41 |
24 |
0.6 |
|
PEJ125×6 |
DN125 |
6 |
216 |
±48 |
28 |
0.6 |
|
Part Number |
Size |
Convolution Number |
Length |
Movement |
Nominal Diameter |
|
|
Axial |
Lateral |
|||||
|
(mm) |
PN(MPa) |
|||||
|
PEJ150×3 |
DN150 |
3 |
123 |
±27 |
12 |
0.4 |
|
PEJ150×4 |
DN150 |
4 |
155 |
±34 |
20 |
0.4 |
|
PEJ150×5 |
DN150 |
5 |
187 |
±41 |
24 |
0.4 |
|
PEJ150×6 |
DN150 |
6 |
219 |
±48 |
26 |
0.4 |
|
PEJ200×3 |
DN200 |
3 |
150 |
±27 |
12 |
0.4 |
|
PEJ200×4 |
DN200 |
4 |
188 |
±34 |
20 |
0.4 |
|
PEJ200×5 |
DN200 |
5 |
226 |
±41 |
24 |
0.4 |
|
PEJ200×6 |
DN200 |
6 |
264 |
±48 |
26 |
0.4 |
|
PEJ250×3 |
DN250 |
3 |
160 |
±27 |
9 |
0.25 |
|
PEJ250×4 |
DN250 |
4 |
200 |
±34 |
16 |
0.25 |
|
PEJ250×5 |
DN250 |
5 |
240 |
±41 |
18 |
0.25 |
|
PEJ250×6 |
DN250 |
6 |
280 |
±48 |
20 |
0.25 |
|
PEJ300×3 |
DN300 |
3 |
180 |
±27 |
8 |
0.25 |
|
PEJ300×4 |
DN300 |
4 |
228 |
±34 |
14 |
0.25 |
|
PEJ300×5 |
DN300 |
5 |
276 |
±41 |
16 |
0.25 |
|
PEJ300×6 |
DN300 |
6 |
324 |
±48 |
18 |
0.25 |
|
PEJ350×3 |
DN350 |
3 |
188 |
±27 |
7 |
0.25 |
|
PEJ350×4 |
DN350 |
4 |
238 |
±34 |
12 |
0.25 |
|
PEJ350×5 |
DN350 |
5 |
288 |
±41 |
15 |
0.25 |
|
PEJ350×6 |
DN350 |
6 |
338 |
±48 |
16 |
0.25 |
|
PEJ400×3 |
DN400 |
3 |
230 |
±30 |
6 |
0.15 |
|
PEJ400×4 |
DN400 |
4 |
270 |
±35 |
10 |
0.15 |
|
PEJ400×5 |
DN400 |
5 |
280 |
±42 |
15 |
0.15 |
|
PEJ400×6 |
DN400 |
6 |
325 |
±49 |
16 |
0.15 |
|
PEJ450×3 |
DN450 |
3 |
230 |
±30 |
5 |
0.15 |
|
PEJ450×4 |
DN450 |
4 |
270 |
±35 |
9 |
0.15 |
|
PEJ450×5 |
DN450 |
5 |
290 |
±42 |
2 |
0.15 |
|
PEJ450×6 |
DN450 |
6 |
340 |
±49 |
14 |
0.15 |
|
PEJ500×3 |
DN500 |
3 |
270 |
±30 |
5 |
0.15 |
|
PEJ500×4 |
DN500 |
4 |
270 |
±35 |
9 |
0.15 |
|
PEJ500×5 |
DN500 |
5 |
290 |
±42 |
11 |
0.15 |
|
PEJ500×6 |
DN500 |
6 |
340 |
±49 |
13 |
0.15 |
Advantage
Exceptional chemical resistance. Acids, alkalis, and even strong oxidizers and solvents pose no challenge. Resistant to concentrated acids, strong bases, and aggressive organic solvents, PTFE Bellows maintain their integrity over extended periods. This makes them ideal for corrosive fluid pipelines in chemical, pharmaceutical, and electronics applications.
They can withstand temperatures from -200°C (extremely cold!) to 260°C. Extreme temperature variations are no problem! They retain flexibility even at high temperatures, without cracking or warping.
The exceptionally smooth surface provides superior non-stick properties. This resistance to adhesion makes them self-cleaning and reduces the risk of clogging, leading to lower maintenance costs.
The corrugated design allows the bellows to flex and accommodate linear and angular movements of the pipe. This provides a secure, reliable seal, preventing leaks.
Exceptionally durable against environmental factors, PTFE bellows resist aging, UV degradation, and ozone damage. Allowing them to be used outdoors for extended periods.
6. Superior Electrical Insulation:
PTFE's excellent insulating properties make it ideal for electrical insulation and applications requiring protection from electrical shock within electronics and electrical systems.
Product Display


About Our Company - ALLTO
We are a leading manufacturer specializing in water supply and drainage equipment, as well as pipeline fittings. Since our establishment in 1996, we have been committed to delivering high-quality products at competitive prices, backed by attentive and reliable service.
Our Main Products Include:
Rubber Expansion Joints
Flexible Hoses
Metallic Expansion Bellows
Dismantling Joints
Valves
Our Team
Our staff consists of a dynamic, well-educated, and highly skilled team. Each member excels in operations, management, and teamwork while continuously striving for self-improvement. Guided by our core principle of "People-Oriented, Work in Earnest," we foster a collaborative and motivated work environment.
Customer-Centric Approach
We provide seamless, coordinated service throughout the entire purchasing process, ensuring a smooth and efficient experience for our clients.






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