Detailed Product Description

HPL tube
Standard: DIN 2391, DIN 1630, DIN 1629
Sizes: OD from 4.75 to 60mm
           WT from 0.75 to 6mm

Delivery condition: NBK (+N) Normalized. (Mainly focus on)

After the final cold forming process the tubes are annealed above the upper transformation point in a controlled atmosphere.

SURFACE TREATMENTS

1. Bare Tube (No coating): Bright and smooth, Surface Roughness both inner and outer surface  0.2Ra Maximum for special requirement

2. Surface Coating

 A. Silver galvanized

 B. Yellow galvanized

 C. Olive green coated

Layer thickness: 8-20um, Salty Spray Test: 48-150 hours

3.  Black phosphate

Application

. Hydraulic Fields

A. Hydraulic circuits (HPL), pneumatic lines, and hydraulic suspension system

B. Hydraulic cylinders (HPZ)