Detailed Product Description
| Application: |
Fluid Pipe |
Delivery Condition: |
Annealed, Normalized, Heat Treatment, BK, BKS, BKW, NBK, GBK |
| Grade: |
Grade A, T4, T5, St35, St45, St52, E235, E255, St 35, St 52, St37.4, E355 |
Product Name: |
Seamless Steel Tubes |
| Section Shape: |
Round |
Standard: |
DIN 2391, EN 10305-1, EN 10305-4 |
| Surface Treatment: |
Galvanized |
Technique: |
Seamless, Cold Drawn |
DIN 2391 E235 E255 E355 Hydraulic Seamless Steel Tubing Wall Thickness 30mm Cold Rolled
Quick Detail:
Product: EN 10305-1 / EN 10305-4 / DIN 2391
O.D.:6.0mm-350mm
W.T.:1.0mm-30mm
Grade:St35, St37.4, St45, St52,E235, E255,E355
Cold drawn or cold rolled precision seamless steel tubes,inside precision seamless tubes for hydraulic pressure and pneumatic services
Description:
|
EN 10305-1/ EN 10305-4 / DIN 2391
|
|
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
|
|
E215
|
0.10
|
0.05
|
0.70
|
0.025
|
0.025
|
|
E235
|
0.17
|
0.35
|
1.2
|
0.025
|
0.025
|
|
E355
|
0.22
|
0.55
|
1.6
|
0.025
|
0.025
|
|
St 35
|
0.17
|
0.35
|
≥0.40
|
0.025
|
0.025
|
|
St 45
|
0.21
|
0.35
|
≥0.40
|
0.025
|
0.025
|
|
St 52
|
0.22
|
0.55
|
≤1.60
|
0.025
|
0.025
|
Mechanical Properties (Mpa):
|
Grade
|
Yield strengtha Rehmin Mpa
|
Tensile strengtha Rmmin Mpa
|
Elongation A min %
|
|
E215
|
215
|
290-430
|
30
|
|
E235
|
235
|
340-480
|
25
|
|
E355
|
355
|
490-630
|
22
|
Minimum Values For The Delivery Condition:
|
Steel grade
|
BK(+C)
|
BKW(+LC)
|
BKS(+SR)
|
GBK(+A)
|
NBK(+N)
|
|
RmN/mm
min
|
min
|
RmN/mm
min
|
min
|
N/mm
min
|
ReH
N/mm
min
|
min
|
N/mm
min
|
min
|
N/mm
min
|
ReH
N/mm
min
|
min
|
|
E235
|
480
|
6
|
420
|
10
|
420
|
350
|
16
|
315
|
25
|
340-480
|
235
|
25
|
|
E355
|
640
|
4
|
580
|
7
|
580
|
450
|
10
|
450
|
22
|
490-630
|
355
|
|
|
St35
|
480
|
6
|
420
|
10
|
420
|
315
|
14
|
315
|
25
|
340-470
|
235
|
25
|
|
St45
|
580
|
5
|
520
|
8
|
520
|
375
|
12
|
390
|
21
|
440-570
|
235
|
21
|
|
St52
|
640
|
4
|
580
|
7
|
580
|
420
|
10
|
490
|
22
|
490-630
|
355
|
22
|
Condition Details:
|
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.
|
Tests we apply to the tubes:
1) Chemical Composition Analysis
2) Mechanical Properties (Tensile strength, Yield strength,, Elongation, Hardness)
3) Technological Test (Flattening test, Flaring Test, Bending Test, Hydraulic pressure test)
4) Surface quality detection
5) Eddy-current examination
6) Visual test
Mill test certificates will be issued according to EN10204/3.1B
Other Terms:
Packing: Bare packing/bundle packing/crate packing/wooden protection at the both sides of tubes and suitably protected for sea-worthly delivery or as requested.
Inspection and Test: Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength,Yield Strength, Elongation, Flaring, Flattening, Bending, Hardness, Impact Test), Surface and Dimension Test, No-destructive Test, Hydrostatic Test.
Surface treatment: Oiled, black painted, hot dipped galvanized or phosphate coating as required.
Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested
Applications:
1.Automotive fields
A. Fuel injection lines/nozzles
B. CNG (Compressed Nature Gas) tube-- Burst pressure: 1307Bar, Working Pressure: around 350bar
C. Drive transmission: Steering column elements
D. Gear shafts, hand brake, front axles, airbag inflators, stabilizers, seat fasteners, front-wheel drive shafts
2. Hydraulic Fields
A. Hydraulic circuits (HPL), pneumatic lines, and hydraulic suspension system
B. Hydraulic cylinders (HPZ)
for Atuo usd;for machinery use;Oil cylinder tube;Motorcycle shock reducer steel tubes;/Auto shock reducer inner cylinder.
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:
