News - Introduction to corrugated tubes for automotive wiring harnesses

Bellows refer to tubular elastic sensitive elements connected by foldable corrugated sheets along the folding and stretching direction.

Wire harness corrugated tube (corrugated tube or convoluted tube) is a tube with concave and convex corrugated shapes, which is used for the parts of the wire harness that are subject to greater mechanical impact.

Corrugated pipe diagram:

Corrugated tubes are widely used in instruments and meters. The main purpose is to use protective products for automotive wiring harnesses to convert pressure into displacement or force. The bellows wall is thin and has high sensitivity. The measurement range is from tens of Pascals to tens of MPa. .Its open end is fixed, the sealed end is in a free state, and an auxiliary coil spring or reed is used to increase elasticity. When working, it stretches along the length of the pipe under the action of internal pressure, causing the movable end to produce a certain relationship with the pressure. Displacement.

Market analysis

Foreign brands: Schlamm, Delfingen, Frankish

Domestic brands: Tuoyan, Nanjing Ninghe, Jundingda, Wenyi, Fanhua, Renault, Bell, Puyang Fangxin, Xinghua Jingsheng, Xinghua Kehua

Advantages of foreign brands

1. The economic situation is not good and enterprises need to reduce costs.
2. Corporate debt ratios are generally high
3. Enterprise procurement management and production scheduling are under pressure
4. Long development and delivery cycle and high price

Disadvantages of foreign brands

1. Car companies have strict supplier certification systems
2. High customer concentration, making it difficult to develop new customers
3. Foreign capital attaches great importance to simultaneous development capabilities

Advantages of domestic brands

1.Short delivery cycle
2. Low price
3. The company’s process is simple and the new product development cycle is short.
4.Good service
5. Production scheduling is highly flexible

Disadvantages of domestic brands

1.Multiple varieties, small batches, multiple batches
2. Difficulty in gaining customer recognition
3. Product quality is not as good as foreign brands

Bellows grade

Corrugated pipe types

Normal Profile:
1.Most economicaltube is economical and practical
2.Small outer diameter

AHW (Automotive High Wave) high oscillation type:
1.Very flexible with good flexibility
2.Slit stays closed after assembly&bending
The opening remains closed when the bellows is assembled or bent

UFW (Ultra Flat Wave) ultra-flat type:
1.UpgradedFlexibility,for small bending radii
Upgraded flexibility to achieve a smaller bending radius
2. Flatinnerwave,forwiresagainststrattledamages
A flat wave trough can better prevent the wire insulation layer from being impacted by the wave trough.

JIS (Japanese Industrial Standard) Japanese type:
1.Small outer diameter
2.Corresponds with Japanese Standards
3.Characteristicssimilarto Normal Profile has the same characteristics as normal profile

GMProfile American:
1.Very flexible with good flexibility
2.Corresponds with GM Standards conforms to American standards
3.Slitstaysclosedafterassembling&bending as AHW
Like the high-oscillation type, the bellows assembly remains closed when bent

HighflexProfile High elastic type:
1.Very flexible with good flexibility
2.Slitstaysclosedafterassembling& bending
When the bellows is assembled or bent, the opening remains closed.