JOINFLEX

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Flexible Connector effect

Reduce vibration from the engine to the exhaust pipe and provide noise reduction
Thermal expansion of exhaust pipe caused by absorbing high-temperature exhaust gas
Compensate for displacement of exhaust pipes, protect catalyst converters and gas
emissionsReducing air pollution has played a sealing role.

01
Improving the durability of exhaust systems and improving NVH testing
02
Absorb the energy of relative motion through the engine and exhaust system
03
Absorb vibrations through the engine and exhaust system
04
Absorb noise and vibration from the engine,
as well as vibration from the road surface, providing a comfortable riding experience
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Prevent exhaust gas leakage and reduce environmental pollution
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Absorb the thermal expansion and contraction of the exhaust system through exhaust
07
Compensating for the tolerances and ease of operation of various components of the exhaust system during the manufacturing process
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Absorb the thermal expansion of the cruise pipe, extending and ensuring the lifespan of the manifold
09
Prevent damage to various components and welding parts of the exhaust system caused by engine vibration, sudden braking during driving, and driving on harsh roads
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Flexible Tube Production process

Before the product is shipped out, in order to provide customers with satisfactory and qualified products, the following tests need to be conducted:

01
Elastic test
02
leak test
03
Durability test
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Scope of use

Passenger cars, buses, trucks

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Exhaust pipe composition and various components

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Flexible Tube Standard Size

MODEL I.D.(mm) t basic ply LENGTH(mm) inner type notes
JFT-43 43.2A 0.2 ~ 0.4 2 80 ~ 280 In/Braid OR Inter Lock For passenger cars
JFT-45 44.9A 0.2 ~ 0.4 2 80 ~ 300 In/Braid OR Inter Lock "
JFT-49 49.5A 0.2 ~ 0.5 2 80 ~ 320 In/Braid OR Inter Lock "
JFT-52 52.4A 0.2 ~ 0.5 2 100 ~ 350 In/Braid OR Inter Lock "
JFT-54 54.5A 0.2 ~ 0.5 2 100 ~ 400 In/Braid OR Inter Lock "
JFT-60 60.5A 0.2 ~ 0.5 2 150 ~ 400 In/Braid OR Inter Lock "
JFT-70 70A 0.25 ~ 0.5 2 200 ~ 450 Bellows +Pipe welding For commercial vehicles
JFT-90 90A 0.25 ~ 0.5 2 200 ~ 450 Bellows +Pipe welding "
JFT-101 101A 0.25 ~ 0.5 2 200 ~ 450 Bellows +Pipe welding "
JFT-103 103A 0.25 ~ 0.5 2 200 ~ 450 Bellows +Pipe welding "
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Status and specifications of each component

Part Name material Specifications QT'Y notes
Bellows STS 304, 321, 310S, XM15J1, NAR315SN, ER-1, ER-4¿Ü 2PL 1 The material can be customized according to customer requirements
Out Braid STS 304W, 316Ti, XM 15J1¿Ü ¨ª0.4 1 External network sleeve specifications: 9 x 64 or 12 x 48
Cap or Belt SACE80/80, STS 409L, 430PL¿Ü 1.2t 2
Inner Braid or Inter Lock STS 304W¿Ü ¨ª0.4 1 Internal network sleeve specifications: 7 x 64 or 9 x 48
STS 304W, SM15J1, DIN1.4828¿Ü 0.3t
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The main functions of each component

ºÎÇ°¸í ¿ªÇÒ
Bellows Provide primary elastic support to prevent exhaust gas from flowing out and absorb vibrations
Out Braid Provide external protection, strengthen the welding strength between corrugated pipes and exhaust pipes, and prevent external damage
Cap or Belt Prevent excessive deformation, strengthen the welding strength between corrugated pipes and exhaust pipes, and prevent external damage
Inner Braid or Inter Lock ¹è±â°¡½º·ÎºÎÅÍ Bellows º¸È£, ¼ÒÀ½°¨¼â