EN10305 E355 Precision Steel Tube Cold Rolled ERW Carbon Steel Tubing for Automotive Fuel Injection and Shock Absorber Parts

EN10305 E355 Precision Steel Tube Cold Rolled ERW Carbon Steel Tubing for Automotive Fuel Injection and Shock Absorber Parts

Description

The EN10305 E355 precision steel tube is a high-performance cold rolled ERW carbon steel tubing specifically engineered for critical automotive applications, including fuel injection systems and shock absorber components. Manufactured in strict accordance with European standard EN10305, this precision tube combines advanced cold rolling technology with electric resistance welding (ERW) to deliver exceptional dimensional accuracy, superior surface finish, and consistent mechanical properties.

Specification

Condition of seamless cold drawn mechanical tubing:

BK (+C) Cold finished/hard (cold finished as drawn).

BKW (+LC) Cold finished/soft

BKS (+SR) Cold finished/stress relieve annealed.

GBK (+A) Annealed.

NBK (+N) Normalized.

Application:

1. Auto and Motorcycle Parts(Fuel Injection Parts, Diesel Engine Parts, Shock Absorber,Gas Spring)
2. Exhaust Pipe for Generator
3. High Heels Steel Pipes
4. Bicycle Frame(Stnadard or Customize)
5. Hydraulic Pipe(Hydrocylinder Pipe)

6. Oxygen Lance Pipe

Process:

These precision tubes are produced from cold rolled carbon steel strips that are formed and electric resistance welded into pre-tubes. The ERW process creates a consistent longitudinal weld seam that is subsequently refined through cold rolling and cold drawing operations. This manufacturing sequence eliminates internal weld beads, improves concentricity, and achieves tight dimensional tolerances with superior surface quality. The cold rolling process also enhances the grain structure and mechanical properties, resulting in a tube that performs reliably under extreme conditions.

Quality Assurance:

Each tube undergoes comprehensive testing to verify compliance with EN10305 standards. Testing protocols include tensile tests, flattening tests, drift expanding tests, dimensional inspections, roughness measurements, and non-destructive testing (eddy current and ultrasonic methods). Leak-tightness verification ensures reliability for fluid power applications.