Bellows are widely used in instruments and meters, and their main
purpose is to convert pressure into displacement or force as a
measuring element of pressure measuring instruments. The wall of
the corrugated tube is thinner, and the sensitivity is high, and
the measurement range is from tens of Pa to tens of MPa.
The bellows can also be used as a sealing isolation element to
separate the two media or prevent harmful fluids from entering the
measuring part of the device. It can also be used as a compensating
element to compensate for the temperature error of the instrument
using the variability of its volume. Sometimes it is also used as
an elastic joint of two parts.
Product Features
1. Flexible ways of installation and beautiful layout, such as It
can be installed in the open, in the dark,
through the ceiling or embedded in the wall, the laying method is
flexible and diverse, and the installation
effect is beautiful.
2. The internal metal hose is made of S30408 austenitic stainless
steel, which is corrosion-resistant and
non-aging, with a designed service life of more than 50 years.
3. The design of air grooved plastic sleeve is easy for monitoring
leaking.
4. It is with compensation, good shock resistance, resistance to
thermal expansion and contraction, and
resistance to uneven settlement., as well as excellent high
temperature resistance, low temperature
resistance and fire resistance.
5. Light weight, good bending performance, free length choices,
simple installation.
Highlights of Product —— SAFE USE OF GAS FOR THE WHOLE FAMILY
01/ Protective sleeve,flame-retardant material Outer sleeve adopts insulating and flame-retardant material, which
effectively prevents burning, and it is automatically extinguished
without fire sources. |  |
 | 02/ SS304 hose, rat bite-proof The high-strength SS304 hose is with high pressure bearing, can
also effectively prevent gas leakage caused by rat bites |
03/ Thick copper pipe, well connection seal The pipe fittings are made of HPb59-1 copper, electroplated
surface, built-in sealing rings (NBR rubber), with excellent
sealing performance. |  |
 | 04/ Super flexibility, bend at will The design of corrugated hose secures its very good flexibility,
bend at will, convenient installation. |
05/ Air grooves The cover sleeve with air grooves can guide the leaking gas to flow
to the detective hole at the connecting ends, for purpose of
accurate monitoring. |  |
PRODUCT PARAMETERS
Brand: Konch Gas
Product name: Stainless steel corrugated hose for gas
Inner tube: SS304
Outer sleeve: Soft PVC, flame-retardant
Connectors: Copper HPb59-1, SS30408
Sealing ring: NRB (Nitrile Butadiene Rubber)
Nominal pressure: PN≤0.2MPa
Working temperature: -20℃ to 120℃
Application: Pipeline of gas, LPG, natural gas, biogas and connections to gas
appliances.
| Model number | DN10
(13.5) | DN13
(15.8) | DN13
(16.8) | DN15
(18.5) | DN15
(20.0) | DN20
(25.0) | DN25
(32.0) |
| Hose outer dia. φDo (±0.2mm) | 13.5 | 16.0 | 16.8 | 18.5 | 20.0 | 25.0 | 32.0 |
PVC outer dia. (±0.3mm) | 15.0 | 17.5 | 18.3 | 20.0 | 21.5 | 26.5 | 33.5 |
| Hose inner dia. φDi (+0.3mm) | 9.6 | 12.6 | 13.0 | 15.0 | 16.0 | 20.0 | 25.0 |
Hose pitch q (+0.3mm) | 2.6 | 4.0 | 4.0 | 4.0 | 5.0 | 5.0 | 6.0 |
PRODUCT COMPARISON
| Item name | Plastic hose | Aluminum tube | SS304 corrugated hose |
| Material | Plastic | Plastic+Alu | Plastic+SS304 |
| Service life | 3 years | 10 years | 50 years |
| Safety level | Low | Middle | High |
| Connection method | Clamp | Press+Screw | Snap ring+Screw |
| Advantages | 1. Good flexibility.
2. Cheap price. | 1. High safety level and long service life | 1. Good flexibility.
2. Very long service life.
3. High safety level, easy to monitor leaking
4. Easy installation, solid connection |
| Disadvantages | 1. Short service life
2. Easy broken, easy been cut
3. Easy to loosen and fall off | 1. Low flexibility, not easy to bend
2. Low compensation, easy to loosen
3. Easy to loosen at press spot due to temperature change | 1. Price higher, if not take life time into account |
WORKSHOP AND EQUIPMENT
6 Production lines for stainless steel gas pipes, and10 lines for
PVC-U/ PPR water pipes
PROJECT PARTNERS
GUARANTEE
