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Hydraulic Pipe

Our hydraulic pipe mainly are cold drawn or cold roll precision seamless pipes or welding pipes ,can be used for hydraulic cylinders, industry Jacks, automotive shock absorbers, and others. The tolerance can be minimized to +/-0.02mm, +/-0.015 for the Inner diameter. Material can be carbon and alloy steel. We can also apply it to hone for the inner surface. Good mechanical performance and good inner surface condition. Ra can reach 0.3um.

Hydraulic Pipe 1 Hydraulic Pipe 2 Hydraulic Pipe 3 Hydraulic Pipe 4 Hydraulic Pipe 5
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Product Details

Delivery condition:

Delivery conditions:  Precision tubes are delivered in following conditions (first symbol lists previous designation, the new one according to EN is in brackets):
BK (+C) Cold finished/hard (cold finished as drawn).
No heat treatment after last cold forming process.
BKW (+LC) Cold finished/soft (lightly cold worked).
After 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.
After the final cold forming process the tubes are annealed above the upper transformation point in a controlled atmosphere.
 
Tests: all tubes are checked according to the relevant production standard;supplementary/optional tests are available on request; chemical mechanical and   technological tests are made according to relevant standard
 
Certificates: according to EN 10204 3.1 
 
Packed in bundles or boxes


Advantage:


Application:

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
 E.  Shock absorber and others 
2. Hydraulic Fields
 A. Hydraulic circuits (HPL), pneumatic lines, and hydraulic suspension system
 B. Hydraulic cylinders (HPZ)
3. Other Fields
Hydraulic machines, Hydraulic cylinder, heat exchanger, high precision machines, oil lines, and others in need
 
Material Chemical Composition (%)      
Standard Steel Grade  Material Number C Si Mn P S Cr Mo
DIN 2391 ST35 1.0308 <= 0.17 <= 0.35 >=0.04 <=0.025 <=0.025 - -
ST45  1.0408 <= 0.21 <= 0.35 >=0.04 <=0.025 <=0.025 - -
ST52 1.058 <= 0.22 <= 0.55 <=1.60 <=0.025 <=0.025 - -
  BK BKW BKS GBK
Steel Grade  Rm Tensile Strength  (Mpa) Min A Elongation(%) Min Rm Tensile Strength (Mpa) Min A Elongation(%) Min Rm Tensile Strength (Mpa) Min Rel Yield Strength(Mpa) Min A
Elongation  (%) Min		 Rm Tensile Strength (Mpa)Min A Elongation (%)Min
ST35 480 6 420 10 420 315 14 315 25
ST45  580 5 520 8 520 375 12 390 21
ST52 640 4 580 7 580 420 10 490 22
 
Standard Steel Grade  Material Number C Si  Mn P S Cr Mo
EN10305-1
EN10305-4		 E235 1.0308 <= 0.17 <= 0.35 >=0.04 <=0.025 <=0.025 - -
E255 1.0408 <= 0.21 <= 0.35 >=0.04 <=0.025 <=0.025 - -
E355 1.058 <= 0.22 <= 0.55 <=1.60 <=0.025 <=0.025 - -
 
Steel Grade  (+C) (+LC) (+SR) (+A) (+N)
Rm Tensile Strength 
(Mpa) Min		 A Elongation
(%) Min		 Rm Tensile Strength
(Mpa) Min		 A Elongation
(%) Min		 Rm Tensile Strength
(Mpa) Min		 Rel Yield Strength
(Mpa) Min		 A
 Elongation 
(%) Min		 Rm Tensile Strength
(Mpa)Min		 A Elongation
(%)Min		 Rm Tensile Strength
(Mpa)		 Rel Yield Strength 
(Mpa) Min		 A Elongation
(%) Min
E235 480 6 420 10 420 350 16 315 25 340-480 235 25
E255 580 5 520 8 520 375 12 390 21 440-570 255 21
E355 640 4 580 7 580 450 10 450 22 490-630 355 22
 
 
  Material Chemical Composition (%)    
  Steel Grade  Material Number C Si Mn P  S Cr Mo

GB/T 8162   GB/T 8163   GB/T 3639		 10 - 0.07-0.14 0.17-0.35 0.35-0.65 <=0.035 <=0.04 - -
20 - 0.17-0.23 0.17-0.37 0.35-0.65 ≤0.035 ≤0.035 - -
45 - 0.42-0.50 0.17-0.37 0.50-0.80 ≤0.035 ≤0.035 - -
Q345B/16Mn - ≤0.20 ≤0.50 <=1.70 ≤0.035 ≤0.035 - -
Many other steel grades and customized - modified steel grades are available on request
Some samples of related steel grade
GB TOCT ASTM BS JIS NF DIN
10F   1010 040A10   XC10  
10 10 10,101,012 045M10 S10C XC10 C10,CK10
20 20 1020 050A20 S20C XC18 C22,CK22
45 45 1045 080M46 S45C XC45 C45,CK45
30CrMo 30XM 4130 1717COS110 SCM420 30CD4  
42CrMo   4140 708A42   42CD4 42CrMo4
      708M40      
35CrMo 35XM 4135 708A37 SCM3 35CD4 34CrMo4
 
  Material Chemical Composition (%)    
  Steel Grade  Material Number C Si Mn P
Max		 S
 Max		 Cr Mo
ASTM A519 1010 - 0.08-0.13 - 0.3-0.6 0.04 0.05 - -
1020 - 0.18-0.23 - 0.3-0.6 0.04 0.05 - -
1045 - 0.43-0.50 - 0.6-0.9 0.04 0.05 - -
4130 - 0.28-0.33 0.15-0.35 0.40-0.60 0.04 0.04 0.8-1.1 0.15-0.25
4140 - 0.38-0.43 0.15-0.35 0.75-1.0 0.04 0.04 0.8-1.1 0.15-0.25
 
  Material Chemical Composition (%)
  Steel Grade Material Number C
 Max		 Si
 Max		 Mn P
 Max		 S
 Max
JIS G3445 STKM 11A - 0.12 0.35 Max 0.60 0.04 0.04
STKM 12A - 0.12 0.35 Max 0.60 0.04 0.04
SKTM 12B - 0.12 0.35 Max 0.60 0.04 0.04
SKTM 12C - 0.12 0.35 Max 0.60 0.04 0.04
STKM 13A - 0.25 0.35 0.3-0.9 0.04 0.04
STKM 13B - 0.25 0.35 0.3-0.9 0.04 0.04
STKM 13C - 0.25 0.35 0.3-0.9 0.04 0.04
CONTACT

Zhangjiagang Chewit International Co.,ltd, is the professional supplier in china for high precision seamless steel pipe of carbon, alloy.

CONTACT US

Phone Icon +86 18962244644
address Icon SHUANGSHAN ROAD, JINGANG TOWN, ZHANGJIAGANG CITY, JIANGSU PROVINCE, CHINA
email Icon sale@chewit.cn

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