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Cylinder Tube
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product description
Category
Skiving barreling pipe
Quantity
-
+
Product Description
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Commonly used grade of steel and chemical component
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20#,45#,Q345B,Q345D,25MN,27SIMN,E355,SAE1026,STKM13C,E460,4130,4140
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Grade of steel
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CHEMICAL COMPOSITION,%
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C
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Si
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Mn
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P
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S
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Cr
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Ni
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V
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AI
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≤ ≥
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20#
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0.17-0.24
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0.17-0.37
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0.35-0.65
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0.035
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0.035
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0.250
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0.250
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/
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/
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45#
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0.42-0.50
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0.17-0.37
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0.50-0.80
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0.035
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0.035
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0.250
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0.300
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/
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/
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Q345B
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≤0.2
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≤0.5
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1.00-1.60
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0.030
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0.030
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0.030
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0.250
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0.08
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/
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Q345D
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≤0.2
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≤0.5
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1.00-1.60
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0.030
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0.030
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0.250
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0.250
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0.150
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0.015
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25Mn
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0.22-0.29
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0.17-0.37
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0.70-1.00
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0.035
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0.035
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/
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/
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/
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/
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27SiMn
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0.24-0.32
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1.10-1.40
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1.10-1.40
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0.035
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0.035
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0.300
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0.300
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/
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/
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E355(ST52)
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≤0.22
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≤0.55
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≤1.6
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0.025
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0.025
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0.250
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0.250
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/
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/
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SAE1026
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0.22-0.28
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0.15-0.35
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0.60-0.90
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0.040
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0.050
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/
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/
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/
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/
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E460
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≤0.22
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≤0.60
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1.20-1.60
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0.030
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0.030
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0.300
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0.800
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0.200
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0.020
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4130
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0.28-0.33
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0.15-0.35
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0.40-0.60
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0.040
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0.040
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0.80-1.10
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/
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/
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/
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4140
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0.36-0.43
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0.15-0.35
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0.75-1.00
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0.040
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0.040
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0.80-1.10
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/
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/
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/
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Hydraulic and pneumatic cold-drawn or cold-rolled precise seamless tubes
1.Production Standard：GB/T 3639;GB/T 1519;GB/T 699;DIN2391;EN10305-1;ASTM A519
2.Delivery Condition
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Delivery condition
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Code
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Notes
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Cold drawn/hard
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+C
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Thermal treatment shall not be used after final cold-drawing or cold-rolling
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Cold drawn and stress released
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+SR
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Stress relief annealing of steel tube shall be conducted after final cold-drawing or cold-rolling
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Annealed
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+A
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Annealing of steel tube shall be conducted after final cold-drawing
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Normalizing
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+N
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Normalizing of steel tube shall be conducted after final cooling
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3.Mechanical Property
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Designation
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Delivery condition
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+C
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+SR
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+A
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+N
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Rm/Mpa
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A/%
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Rm/Mpa
|
Rel/Mpa
|
A/%
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KV2/J
|
Rm/Mpa
|
A/%
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Rm/Mpa
|
Rel/Mpa
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A/%
|
KV2/J
|
|
|
20#(ST45)
|
550
|
5
|
520
|
375
|
15
|
-
|
390
|
21
|
440~570
|
255
|
21
|
-
|
|
45#
|
645
|
5
|
600
|
520
|
10
|
-
|
390
|
14
|
540
|
340
|
18
|
-
|
Mechanical Property
|
Designation
|
Delivery condition
|
|||||||||||
|
+C
|
+SR
|
+A
|
+N
|
|||||||||
|
Rm/Mpa
|
A/%
|
Rm/Mpa
|
Rel/Mpa
|
A/%
|
KV2/J
|
Rm/Mpa
|
A/%
|
Rm/Mpa
|
Rel/Mpa
|
A/%
|
KV2/J
|
|
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Q345B
|
640
|
5
|
600
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520
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14
|
|
450
|
22
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490~630
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355
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22
|
34
|
|
Q345D
|
640
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5
|
600
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520
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14
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27(-20℃)
|
450
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22
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490-630
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355
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22
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34
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25Mn(SAE1026)
|
640
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5
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600
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520
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15
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-
|
430
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20
|
460
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300
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20
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-
|
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★E355(ST52)
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640
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5
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600
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520
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14
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-
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450
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22
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490~630
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355
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22
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34
|
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27SiMn
|
800
|
5
|
760
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610
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10
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-
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600
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10
|
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430
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14
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-
|
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E460
|
|
|
690
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620
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13
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-
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650
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|
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★ Low temperature impact test upon request（27J／-20℃）
Remarks:
Rm:indicates tensile strength;
Rel:indicates lower yield strength;
A:indicates percentages elongation after fracture;
KV2:indicates impact absorbed energy.
4.Size range of cold-drawn and cold rolling tubes (单位Unit : mm )
| I.DxO.D Apply Pressure r.mmØ Kg/cm² | I.DxO.D Apply Pressure rr.mmØ Kg/cm² | I.DxO.D Apply Pressure rr.mmØ Kg/cm² | I.DxO.D Apply Pressure r.mmØ Kg/cm² | I.DxO.D Apply Pressure rr.mmØ Kg/cm² | |
| 18x31 751 | 60x72 208 | 88.9x101.6 150 | 125x135 75 | 165x190 160 | |
| 18x35 980 | 60x75 260 | 88.9x105 190 | 125x137 100 | 165.1x190.5 160 | |
| 20x30 520 | 60x80 346 | 90x100 115 | 125x140 125 | 170x190 125 | |
| 20x40 1040 | 63.5x76.2 210 | 90x105 173 | 125x145 166 | 170x195 150 | |
| 25x35 416 | 63x69 99 | 90x110 231 | 125x152 224 | 170x205 220 | |
| 30x36 208 | 63x71 132 | 95x110 165 | 127x146 155 | 175x190 95 | |
| 30x40 346 | 63x73 165 | 95x115 220 | 130x142 96 | 175x195 120 | |
| 30x45 550 | 63x76 215 | 98.4x111.13 140 | 130x150 160 | 177.8x203.2 150 | |
| 32x42 325 | 63x80 280 | 100x107 73 | 130x153 190 | 177.8x215.9 220 | |
| 35x45 297 | 65x75 160 | 100x109 94 | 130x155 200 | 180x196 92 | |
| 38x50 330 | 65x80 240 | 100x110 104 | 135x160 200 | 180x205 150 | |
| 38.1x50.8 335 | 65x85 320 | 100x114 146 | 140x153 96 | 180x210 175 | |
| 40x44 104 | 70x80 148 | 100x115 156 | 140x155 115 | 180x216 208 | |
| 40x46 156 | 70x82 178 | 100x116 166 | 140x160 148 | 180x225 260 | |
| 40x48 208 | 70x85 238 | 100x120 208 | 140x165 185 | 200x216 83 | |
| 40x50 260 | 70x90 297 | 100x125 260 | 140x170 225 | 200x220 100 | |
| 40x55 390 | 75x85 138 | 100x130 312 | 145x170 180 | 200x232 166 | |
| 40x60 520 | 75x90 208 | 101.6x117.48 160 | 145x175 220 | 200x242 210 | |
| 45x55 231 | 75x95 270 | 105x120 150 | 150x160 70 | 203.2x228.5 130 | |
| 45x60 346 | 76.2x88.9 170 | 105x125 200 | 150x163 90 | 203.2x241.3 195 | |
| 50x55 104 | 76.2x92.07 220 | 107.95x125 170 | 150x168 125 | 220x260 190 | |
| 50x57 145 | 80x87 90 | 110x120 95 | 150x170 140 | 225x254 135 | |
| 50x58 166 | 80x89 117 | 110x125 142 | 150x175 173 | 225x274 226 | |
| 50x60 208 | 80x90 130 | 110x130 189 | 150x180 210 | 250x267 71 | |
| 50x65 312 | 80x95 195 | 110x135 240 | 152.4x171.5 130 | 250x290 170 | |
| 50x70 416 | 80x100 260 | 114.3x133.35 180 | 152.4x177.8 170 | 250x298 200 | |
| 50.8x63.5 260 | 82.55x92.07 130 | 115x130 140 | 160x172 78 | 300x318 62 | |
| 55x65 189 | 82.55x95 160 | 115x135 185 | 160x178 117 | 300x355 195 | |
| 55x70 283 | 82.55x98.4 200 | 120x132 104 | 160x180 135 | ||
| 57x70 240 | 85x95 122 | 120x135 130 | 160x185 162 | ||
| 60x70 173 | 85x100 190 | 120x140 173 | 160x190 195 | ||
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