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EN10305-4 E355 Black Phosphating BKS Cold Drawn Hydraulic Honed Steel Tube

Minimum Order Quantity : 5 tons Price : Negotiable
Packaging Details : in bundles with seaworthy packing Delivery Time : 45-60 days
Payment Terms : T/T, L/C, D/A, D/P, Western Union, MoneyGram Supply Ability : 6000 ton/year
Place of Origin: CHINA Brand Name: TORICH
Model Number: EN10305-4

Detail Information

Certification: ISO9001, TS16949 Product Name: EN10305-4 E355 Black Phosphating BKS Cold Drawn Hydraulic Honed Steel Tube
Standard: EN10305-4 Surface: BA/Black Phosphating/Galvanizing
Key Words: Hydraulic Seamless Steel Tubes Technique: Cold Drawn
Delivery Condition: NBK/BKS/+N Section Shape: Round
High Light:

Cold St52 Steel Tube

,

EN10305-4 E355 St52 Steel Tube

,

EN10305-4 E355 st52 tube

Product Description

EN10305-4 E355 Black Phosphating BKS Cold Drawn Hydraulic Honed Steel Tube

 

TORICH adopts Cold Drawn to ensure high dimensional accuracy and good surface finish of precision steel tube.

TORICH is specified in manufacturing black phosphated precision steel tube according to EN10305-4 with the material of E355.

This precision steel tube is widely used for Hydraulic Pneumatic Cylinders, Mechanical engineer.

 

Chemical Composition:

Steel Grade Chemical Components (%)
Steel Name Steel Number

C

 

max.

Si

 

max.

Mn

 

max.

P

 

max.

S

 

max.

AL

 

min.

E215 1.0212 0.10 0.05 0.7 0.025 0.025 0.025
E235 1.0308 0.17 0.35 1.2 0.025 0.025 /
E355 1.058 0.22 0.55 1.6 0.025 0.025 /

 

Mechanical proporties:

Mechanical properties at room temperature
Steel Grade Minimum values for the delivery condition
Steel Name Steel Number +C +LC +SR +A +N

Rm

 

Mpa

A

 

%

Rm

 

Mpa

A

 

%

Rm

 

Mpa

ReH

 

Mpa

A

 

%

Rm

 

Mpa

A

 

%

Rm

 

Mpa

ReH

 

Mpa

A

 

%

E215 1.0212 430 8 380 12 380 280 16 280 30 290 to 430 25 30
E235 1.0308 480 6 420 10 420 350 16 315 25 340 to 480 235 25
E355 1.0580 640 4 580 7 580 450 10 450 22 490 to 630 355 22

 

Delivery Condition Symbol in accordance with EN10305 and DIN2391

Symbol in accordance with EN 10305 Symbol in accordance with DIN2391
+C BK
+LC BKW
+SR BKS
+A GBK
+N NBK
 

 

Delivery Conditions

The tubes shall be manufactured from hot finished seamless tubes by cold drawing or other suitable processes.

The tubes shall be supplied in one of the delivery conditions as follows:

Designation Symbol Description
Cold drawn/hard +C No heat treatment after the final cold drawing process.
Cold drawn/soft +LC After the final heat treatment there is a suitable drawing pass.
Cold drawn and stress relieved +SR After the final cold drawing process there is a stress relief heat treatment in a controlled atmosphere.
Annealed +A After the final cold drawing process the tubes are annealed in a controlled atmosphere.
Normalized +N After the final cold drawing operation, the tubes are normalized in a controlled atmosphere.

 

Product Pictures of Black Phosphated BKS Cold Drawn Hydrualic Honed Tube

EN10305-4 E355 Black Phosphating BKS Cold Drawn Hydraulic Honed Steel TubeEN10305-4 E355 Black Phosphating BKS Cold Drawn Hydraulic Honed Steel Tube

Manufacturing Process
EN10305-4 E355 Black Phosphating BKS Cold Drawn Hydraulic Honed Steel Tube 2

 

QUALITY CONTROL

1. Incoming Raw Material Inspection

2. Raw Material Segregation to avoid steel grade mix-up
3. Heating and Hammering End for Cold Drawing
4. Cold Drawing and Cold Rolling, on line inspection
5. Heat Treatment, +A, +SRA, +LC, +N, Q+T
6. Straightening-Cutting to specified length-Finished Measuring Inspection
7. Machanical Testing in own labs with Tensile Strength, Yield Strength, Elongation, Hardness, Impact, Mictrostruture etc
8. Packing and Stocking

 

100% of our steel tubes are dimensionally checked
100% of our steel tubes are visually checked to assure they have a perfect surface condition and no surface defects.
100% eddy current test and ultrosonic test to eliminate longitudinal and transversal defects

 

FQA

Q: Are you trading company or manufacturer?

A:We are a professional steel pipes materials manufacturer.

 

Q: How long is your delivery time?

A: Generally it takes 7-14 days if the goods are in stock or 30-60 days if there is no stock, this mainly depends on quantity.

 

Q: Do you provide free samples?

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.
If you have another question, pls feel free to contact us.

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