Home > Steel Rails >

DIN 2391 E235 E355 Galvanized Steel Tube for Automobile , Cold Drawing Steel Tubing

Categories Galvanized Steel Tube
Place of Origin: Jiangsu China (Mainland)
Brand Name: JIANGSU HUACHENG
Certification: ISO9001 14001 BV TUV PED DNV etc
Model Number: HC
MOQ: 5MT
Packaging Details: Exporting package/wooden box package/Or per customers’ requirement
Delivery Time: 25~35days
Payment Terms: 30%T/T in advance or 100% L/C at sight
Supply Ability: 8000MT/Month
Application: Automobile|Military|Railway industry|Machinery|Atuo|Oil cylinder tube
Certificate: ISO|PED|BV|TUV
Delivery Condition: Annealed|BK|BKS|Normalized|Heat treatment|BKW|NBK|GBK
Grade: St45|St52|St 35|St37|E235|E355
Product Name: Galvanized Steel Tube
Section Shape: Round
Standard: EN 10305-4|EN 10305-1|DIN 2391|DIN1630|ASTM B633-07
Surface treatment: Galvanized
Technique: Seamless|Cold Drawn
  • Product Details
  • Company Profile

DIN 2391 E235 E355 Galvanized Steel Tube for Automobile , Cold Drawing Steel Tubing


DIN 2391 E235 E355 Galvanized Steel Tube for Automobile , Cold Drawing Steel Tubing


Quick Detail:


Standard: DIN 2391 / DIN1630 / EN 10305-4 / EN 10305-1

Material Grade: St52 St52.4
Size:(mm)
Out Dimensions: 6mm – 350mm
Wall Thickness: 0.8mm - 30mm
Length: Fixed(6m,9m,12,24m) or normal length(5-12m)


Description:


Dimensions of the galvanized tubes for hydraulic and pneumatic lines:


Outside diameter ranges from 6 to 350 mm and the wall thickness ranges from 0.8 to 30 mm. Precision steel tubes are delivered according to EN 10305-4, DIN 2391-1, STN 42 6711 and 42 6712, ČSN 42 6711 and 42 6712.


Synopsis of Process Routing:

DIN highly accurate cold drawn bright seamless steel tube is used as the tube to be galvanized, the outer wall is electroplated, caps are covered at two ends of tube to prevent from the dust.

Main Features:

Different color of zinc such as white, yellow, army-green, black is evenly distributed in the surface of the tube, good brightness and antirust and antisepsis could improve after zinc coated.


Length of the galvanized tubes:

in diameter <= 16 mm >=6000 + 100 mm
in diameter >= 16 mm <=24000 + 50 mm


Tolerances of the zinc coated tubes:


-tolerances of the outside diameter:

diameter between 4 - 30 mm

±0,08 mm

diameter between 35 - 38 mm

±0,15 mm

diameter above 42 mm

±0,20 mm

-tolerances of the inside diameter are according to EN 10305-4

-tolerance of the wall thickness ± 10%


The Main Steel grades for the zinc coated tubes:


St 30 Si / St 30 Al / St 35 / St37.4 / St45 / St 52 / St52.4 / E235, E255,E355

DIN 2391 / EN 10305-1/ EN 10305-4

Precision seamless tube and pipe with European&Germany standard

Application:

for Atuo;for machinery use; Oil cylinder tube; Motorcycle shock reducer steel tubes; Auto shock reducer inner cylinder.

Size(mm):

O.D.:6mm-350mm ; W.T.:1-30mm; L:max 24000


Grade and Chemical Composition(%):


Grade

Chemical Composition(%):

C max

Si max

Mn

P max

S max

St 52

0.22

0.55

≤1.60

0.025

0.025

St 45

0.21

0.35

≥0.40

0.025

0.025

St 35

0.17

0.35

≥0.40

0.025

0.025

St 30 Si

0.10

0.30

<=0.55

0.025

0.025

St 30 Al

0.10

0.05

<=0.55

0.025

0.025


Condition on delivery:


Steel Grade

BK

BKW

GBK

NBK

Code No.

Tensile

Strength

N/mm2 min

Elongation at rupture N/mm2 min

Tensile

Strength

N/mm2 min

Elongation at rupture N/mm2 min

Tensile

Strength

N/mm2 min

Elongation at rupture N/mm2 min

Tensile

Strength

N/mm2 min

Elongation at rupture N/mm2 min

St 52

590

4

540

7

490

22

490-630

22

St 45

540

5

470

8

390

21

440-570

21

St 35

440

6

370

10

315

25

340-470

25

St30 Si

400

8

330

12

280

30

290-420

30

St30 Al

400

8

330

12

280

30

290-420

30


Final supply conditions:


Designation

Symbol

Description

Cold finished (hard)

BK

Tubes do not undergo heat treatment following the final cold forming and, thus, have a rather high resistance to deformation.

Cold finished (soft)

BKW

The final heat treatment is followed by cold drawing involving limited deformation. Appropriate further processing allows a certain degree of cold forming (e.g. bending, expanding).

Cold finished and stress-relieved

BKS

Heat treatment is applied following the last cold forming process. Subject to appropriate processing conditions, the increase in the residual stresses involved enables both forming and machining to a certain degree.

Annealed

GBK

The last cold forming process is followed by annealing in a controlled atmosphere.

Normalized

NBK

The last cold forming process is followed by annealing above the upper transformation point in a controlled atmosphere.


Galvanized tube category and related standard:


Galvanized tube category and related standard

Galvanized tube category

Related Standard

Zinc coating thickness

Salt spray test

Gr3+ Galvanized tube with blue and white zinc

ASTM B633-07
(Type III,SC 1/2/3/4)

5-25um

24--72 hours without white rust;48--168 hours without red rust

Gr3+ Galvanized tube with color zinc

ASTM B633-07
(Type II,SC 1/2/3/4)

5-25um

48--96 hours without white rust;48--240 hours without red rust

Gr6+ Galvanized tube with color zinc

ASTM B633-98
(Type II,SC 1/2/3/4)

5-25um

24--96 hours without white rust;48--124 hours without red rust


Applications:


Zinc coated precision steel tubes (galvanized tubes) are destined for hydraulic and pneumatic pressure distribution (so called HPL tubes), production of automobile components, utility vehicles as well as for production of machine products such as fittings and joints. Cold drawn precision tubes are used as the semi-finished product and they are made from rolled seamless tubes. Precision tubes HPL types are made from carbon and alloyed steel.


Application areas:

Automotive, military, railway industry, with high requirement of the tubes brightness, cleanness, antirust, and antisepsis.


Competitive Advantage:


Huacheng Industry Pipe Making Corporation

Asia Leading Steel Pipe & Tube Manufacturer with more than 250,000Tons/Year, >60% shipped to more than 35 Countries.We aims at manufacturing quality pipes & tubes with reasonable and competitive price, good quality for our global customers.


Factroy Pictures:


Pipe & Tube Processing

Factory Equipments:


Production Line:

Quality Control:



Steel Pipe & Tube Application:

Package:

Export Standard / Wooden Box

Main Certificates:

PED ISO BV TUV etc.

Main Customers:



Quality DIN 2391 E235 E355 Galvanized Steel Tube for Automobile , Cold Drawing Steel Tubing for sale
Send your message to this supplier
 
From:
Enter your email please.
To: Jiangsu Huacheng Industry Pipe Making Corporation
Subject:
Message:
Characters Remaining: (0/3000)
 
Inquiry Cart 0
  • Haven't found right suppliers
  • Our buyer assistants can help you find the most suitable, 100% reliable suppliers from China.
  • And this service is free of charge.
  • we have buyer assistants who speak English, French, Spanish......and we are ready to help you anytime!
  • Submit Buying Request
    Contact Us Quickly