Double wall Welded steel bundy tube

Shaanxi Yongrui Industry Co.,Ltd,we’re leading manufacture of steel bundy tube . We has specialized in manufacturing steel tubes for automobiles and appliances for over 22 years.Our main product is Double wall welded steel bundy tube.It’s made by steel strip with copper coated outside and inside ,then rolled720°

Characteristics and features for double wall steel tube

Features

Fine inside cleanness,high strength,and nice elongation

Good foundation for after-process,anti-leakage

Anti-high pressure explosion and excellent anti-corrosion property after surface treatment,the tubes can be provided in coils or cut to length with any length according to the requirements from customers

The tube is used for auto braking system and steering system and so on.

Retention of Max 1,500kgf/㎠ for pressure withstand

Durability for vibration, impact, and airtightness

Possibility for various bending and tube tip processing

Possibility for galvanization and fluoroplastic coating

Chemical ingredient

C : MAX. 0.15%

Si : Trace

Mn : MAX. 0.60%

P : MAX. 0.050%

S : MAX. 0.050%

Mechanical property

Tensile Strength:≥290MPa

Yield Strength:≥180MPa

Elongation rate:≥14%

Flaring Test Flaring:≥25%

Allowable error

Exterior diameter : ±0.08mm

Thickness : ±0.08mm

Related official standard (including single winding steel tube)

Specifications