EN10305-4 Seamless Cold Drawn Tubes for Hydraulic and Pneumatic Power Systems

EN10305-4 Seamless Cold Drawn Tubes for Hydraulic and Pneumatic Power Systems

Product Description

Standard:  EN 10305-4

Material: E215 E235 E355 etc

Size:

Outside Diameter: 4-80mm, 

Wall thickness:0.5-12.5mm, 

Length: ≤12mm. or at buyers' request

Surface:

Galvanization/Galvanized/Zinc Coated

Blue White Zinc (Trivalent Chromium Passivation)

Plating Colour Zinc(Trivalent Chromium Passivation)

Yellow, Army-Green

Phosphated/Black Phosphated

Surface Quality:

Without oxidization, No crack, No fold, No rolling fold, No scar, No laminar defect

Main feature:

High precision, Excellent brightness

No oxidization on outer and inner walls after heat treatment

High cleanness of inside wall, High pressure

No deformation after clod bending, No crack after flaring and flattening

Standard Tests for Seamless Cold Drawn Tubes for Hydraulic and Pneumatic

Delivery condition:

The tubes can be produced in the following delivery conditions:

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

No heat treatment after the last cold forming process.

BKW (+LC) Cold finished/soft (lightly cold worked)

After the last heat treatment there is a light finishing pass (cold drawing).

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

After the final cold forming process the tubes are stress relieve annealed.

GBK (+A) Annealed.

After the final cold forming process the tubes are annealed in a controlled atmosphere.

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

Product Show of Seamless Cold Drawn Tubes for Hydraulic and Pneumatic

Key words: Precision Steel Tubes, Precision Seamless Steel Tubes,High Precision Seamless Steel Tubes/Pipe

Application: Hydraulic system, Pneumatic Power Systems,Automobile