TORICH INTERNATIONAL LIMITED
TORICH INTERNATIONAL LIMITED The Steel Tube Maker
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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
| Type of inspection or test | Frequency of Teting | |
| Non-specific inspection | Specific inspection | |
| Chemical analysis | M | M |
| Tensile test | M | One per test unit |
| Flattening testorDrift expanding test | M | 2 per test unit |
| Dimensional inspection | M | M |
| Visual examination | M | M |
| NDT for verification of leak tightness | Individual | Individual |
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
Certificates:
Q: Are you trading company or manufacturer ?
A: A professional steel pipes materials inventor, manufacturer and solution provider
Q: How long is your delivery time?
A: Generally it is 7-14 days if the goods are in stock. or it is 30-60 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples of carbon seamless steel tube ? is it free or extra ?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
Key words: Precision Steel Tubes, Precision Seamless Steel Tubes,High Precision Seamless Steel Tubes/Pipe
Application: Hydraulic system, Pneumatic Power Systems,Automobile