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Large Diameter Seamless Cold Drawn Steel Tube For Hydraulic Pneumatic Cylinder

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Large Diameter Seamless Cold Drawn Steel Tube For Hydraulic Pneumatic Cylinder

Brand Name : Torich

Model Number : GB/T3639、GB/T8713、EN10305-1:2002、EN10305-2:2002、 ASTM A519-2006、ASTM A513-2007、GB/T1591-2008、GB/T17396-2009

Certification : GB/T 19001-2008 , ISO 9001:2008 , TS16949

Place of Origin : China

MOQ : 5 ton

Price : USD1900-1950per ton

Payment Terms : L/C, T/T, D/A, D/P, Western Union, MoneyGram

Supply Ability : 6000MT/Month

Delivery Time : 30-45 days

Packaging Details : Oil protection in bundles or in carton boxes or seaworthy packing

Type : Hydraulic Cylinder Tube

Material : 20#、45#、Q345B,25Mn、27SiMn、E355

I.D. : 40-400mm

W.T. : ≥5mm

Technique : Cold Drawn

Length : Up to 12000mm according to customer's requirement

Surface Treatment : Oiled

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Seamless Cold Drawn Steel Tube For Hydraulic Cylinder And Pneumatic Cylinder

Standard : GB/T3639, GB/T8713, EN10305-1:2002, EN10305-2:2002,
ASTM A519-2006, ASTM A513-2007, GB/T1591-2008, GB/T17396-2009

Material: 20#, 45#, Q345B, Q345D, 25Mn, 27SiMn, E355

Hydraulic and pneumatic cylnder tube standard/size/tolerance

Working method


Tube ID

(mm)

Length

(m)
Straightness
(mm/m)

Tolerance

on ID

Tolerance

on WT


ID Roughness

(um)
Cold Draw 40-400 ≤12m 0.2-0.5 　/ ±5% ≤1.6
Cold Rolled 40-150 ≤12m 0.2-0.5 　/ ±5% ≤0.8
Cold Draw-Honed 40-400 ≤8m 0.2-0.3 H8-H9 ±5% ≤0.4
Cold Draw-Rolling 50-300 ≤8m 0.2-0.3 H8-H9 ±5% ≤0.4
Deep hole boring-Roing 250-400 ≤8m 0.2-0.3 H8-H9 ±8% ≤0.8
Deep hole boring-Honed Roing 250-400 ≤8m 0.2-0.3 H8-H9 ±8% ≤0.4

Mechancial property
　

Final supply condition

Steel grade

 Cold finished(hard)(BK) (Cold drawn and stress-relieved(BK+S)

T.S

bN/mm2

 Elogation 5% T.S bN/mm2 Y.S Bn/mm2 Elogation 5% Hardness HB Impact value(-20℃)J
20 ≥550 ≥8 ≥520 ≥400 ≥15 170 /
45 ≥680 ≥5 ≥630 ≥520 ≥12 190 /
Q345B ≥660 ≥8 ≥620 ≥520 ≥15 190 /
Q345D ≥660 ≥8 ≥620 ≥520 ≥15 190 ≥27
25Mn ≥640 ≥8 ≥620 ≥510 ≥15 190 /
27SiMn ≥780 ≥5 ≥700 ≥580 ≥10 210 /
E355 ≥700 ≥8 ≥650 ≥580 ≥15 195 ≥27

Chemecal composition
　

Steel grade		 C Si Mn P S Cr Ni Cu V
20 0.17-0.23 0.17-0.37 0.35-0.65 ≤0.035 ≤0.035 ≤0.25 ≤0.30 ≤0.25 /
45 0.42-0.50 0.17-0.37 0.50-0.80 ≤0.035 ≤0.035 ≤0.25 ≤0.30 ≤0.25 /
Q345B ≤0.20 ≤0.50 ≤0.17 ≤0.035 ≤0.035 ≤0.30 ≤0.50 ≤0.30 ≤0.15
Q345D ≤0.18 ≤0.50 ≤0.17 ≤0.030 ≤0.025 ≤0.30 ≤0.50 ≤0.30 ≤0.15
25Mn 0.24-0.32 1.10-1.40 1.10-1.40 ≤0.035 ≤0.035 ≤0.30 ≤0.30 ≤0.20 /
27SiMn 0.22-0.29 0.17-0.37 0.70-1.0 ≤0.035 ≤0.035 ≤0.25 ≤0.30 ≤0.25 /
E355 ≤0.22 ≤0.50 ≤1.60 ≤0.035 ≤0.025 / / / /

(Tolerance on ID) um
　
ID Size (Tolerance on ID)um
H7 H8 H9 H10
30 +21
0		 +33
0		 +52
0		 +84
0
>30-50 +25
0		 +39
0		 +62
0		 +100
0
>50-80 +30
0		 +46
0		 +74
0		 +120
0
>80-120 +35
0		 +54
0		 +87
0		 +140
0
>120-180 +40
0		 +63
0		 +100
0		 +160
0
>180-250 +46
0		 +72
0		 +115
0		 +185
0
>250-315 +52
0		 +81
0		 +140
0		 +210
0
>315-400 +57
0		 +89
0		 +170
0		 +230
0

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