These tubes are manufactured according to DIN ****0. All aspects such as mechanical properties and dimension tolerances highly conform to the requirements of diesel engine tube.

In view of oil tube' s special quality requirements, we use high quality tube blank ST*0Al, ST*5, ST*7, ST*5, ST*5 from Xingcheng steel or Bao steel which is better in mechanical properties regarding elongation rate, tensile strength, especially high pressure resistance.

High pressure fuel tube
Standard: DIN ***1
Specification: 6* 1.2 6* 1.5 6* 1.8 6* 2 etc.
Surface: Bright and smooth
Automobile air-condition tube
Process: Heat treatment
Surface: Bright and smooth
Mechanical properties: Flattened completely, bend at any angle without crack and break
Substitute for copper or aluminum pipe

Coating
1. Olive green coated seamless steel pipe
Coat thickness: ***5um
Length of pipe coated: & le; 3.5M
Free of Cr6

Production Description:
1) Heat Treatment: Annealing, Bright Annealing
2) Continuous Stenciling If You Require
3) Antirust, Lubricating Treatment
4) Adding Plastics in both sides
5) Bale Into Hexagon, Max ***0 Kg/ Bundle, Strengthening With Reinforcing Rod
6) Smooth Surface, Mechanical Properties equilibrium, Tightness Tolerance