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Hydraulic Cylinder Tube
Product Details
GB ASTM/SAE JIS DIN EN
Q345B/Q355B(16Mn) A572 Gr.50 SM490 St52-3 E355 / S355JR
20# 1020 S20C C22 C22E
45# 1045 S45C C45 C45E
42CrMo 4140 SCM440 42CrMo4 42CrMo4

Designation Symbol Chinese name Description(English)
Cold drawn / hard +C Cold drawn / Hard state No final heat treatment after final cold drawing.
Cold drawn / soft +LC Cold drawn / annealed state Final heat treatment is followed by a suitable drawing pass (limited reduction of area).
Cold drawn and stress relieved +SR Stress-relieved state after cold drawing After final cold drawing the tubes are stress relieved in a controlled atmosphere.
Soft annealed +A Soft annealed state After final cold drawing the tubes are soft annealed in a controlled atmosphere.
Normalized +N Normalized state After final cold drawing the tubes are normalized in a controlled atmosphere.

ID Tolerance Table
ID (mm) H7 tolerance (mm) H8 tolerance (mm) H9 tolerance (mm) H10 tolerance (mm)
>10 - 18 +0.018 +0.027 +0.043 +0.070
>18 - 30 +0.021 +0.033 +0.052 +0.084
>30 - 50 +0.025 +0.039 +0.062 +0.100
>50 - 80 +0.030 +0.046 +0.074 +0.120
>80 - 120 +0.035 +0.054 +0.087 +0.140
>120 - 180 +0.040 +0.063 +0.100 +0.160
>180 - 250 +0.046 +0.072 +0.115 +0.185
>250 - 315 +0.052 +0.081 +0.130 +0.210
>315 - 400 +0.057 +0.089 +0.140 +0.230

Steel Grade Material No. Condition Yield Strength Tensile Strength Elongation
E215 1.0212 +C — 430 8
+LC — 380 12
+SR 280 380 16
+A — 280 30
+N 215 290–430 30
E235 1.0308 +C — 480 6
+LC — 420 10
+SR 350 420 16
+A — 315 25
+N 235 340–480 25
E255 1.0408 +C — 580 5
+LC — 520 8
+SR 375 520 12
+A — 390 21
+N 255 440–570 21
E355 1.058 +C — 640 4
+LC — 580 7
+SR 450 580 10
+A — 450 22
+N 355 490–630 22
C45E 1.1191 +C — 720 4
+LC — 670 6
+A — 510 20
+N 340 ≥540 18
42CrMo4 1.7225 +C — 720 4
+LC — 670 6


Carbon Honing Tube (ID Tolerance:H7,H8,H9 On request)
ID OD Wall thickness ID OD Wall thickness ID OD Wall thickness ID OD Wall thickness ID OD Wall thickness
25 35 5 70 93 11.5 100 116 8 130 148 9 177.8 203.2 12.7
28 35 3.5 70 90 10 100 117 8.5 130 150 10 177.8 215.9 19.05
30 40 5 70 100 15 100 120 10 130 152 11 180 194 7
32 40 4 75 85 5 100 121 10.5 130 155 12.5 180 196 8
32 48 8 75 89 7 100 124 12 130 156 13 180 200 10
35 50 7.5 75 90 7.5 100 125 12.5 130 159 14.5 180 202 11
38 45 3.5 75 95 10 100 127 13.5 130 160 15 180 203 11.5
40 48 4 75 87 6 100 130 15 130 165 17.5 180 205 12.5
40 50 5 75 93 9 100 133 16.5 130 200 35 180 208 14
40 55 7.5 75 100 12.5 100 140 20 135 148 6.5 180 210 15
40 58 9 75 104 14.5 101.6 114.3 6.35 135 156 10.5 180 213 16.5
40 60 10 76.2 88.9 6.35 101.6 117.48 7.94 135 159 12 180 216 18
40 65 12.5 76.2 92.07 7.935 105 115 5 135 160 12.5 180 225 22.5
45 53 4 78 102 12 105 120 7.5 135 168 16.5 180 235 27.5
45 55 5 80 86 3 105 121 8 140 150 5 185 213 14
45 57 6 80 87 3.5 105 122 8.5 140 152 6 185 218 16.5
45 58 6.5 80 88 4 105 125 10 140 153 6.5 190 216 13
45 60 7.5 80 89 4.5 105 130 12.5 140 155 7.5 190 218 14
45 65 10 80 90 5 105 132 13.5 140 156 8 190 219 14.5
50 55 2.5 80 93 6.5 105 135 15 140 160 10 190 225 17.5
50 57 3.5 80 95 7.5 105 140 17.5 140 164 12 190 230 20
50 58 4 80 100 10 108 124 8 140 165 12.5 190 235 22.5
50 60 5 80 102 11 107.95 125 8.525 140 168 14 200 211 5.5
50 65 7.5 80 105 12.5 110 120 5 140 170 15 200 216 8
50 68 9 80 108 14 110 121 5.5 140 172 16 200 216 8
55 65 5 80 112 16 110 125 7.5 140 175 17.5 200 219 9.5
55 68 6.5 80 120 20 110 127 8.5 140 180 20 200 220 10
55 70 7.5 80 133 26.5 110 128 9 145 160 7.5 200 225 12.5
55 73 9 82.55 95 6.225 110 130 10 145 170 12.5 200 232 16
55 75 10 82.55 98.4 7.925 110 132 11 142 172 15 200 235 17.5
55 80 12.5 85 95 5 110 133 11.5 145 175 15 200 240 20
56 66 5 85 98 6.5 110 135 12.5 150 160 5 200 242 21
50 70 10 85 100 7.5 110 140 15 150 163 6.5 200 245 22.5
50 80 15 85 102 8.5 110 145 17.5 150 168 9 203.2 213 4.9
50.8 63.5 6.35 85 104 9.5 110 180 35 150 170 10 203.2 228.5 12.65
55 65 5 85 105 10 114 175 30.5 150 172 11 203.2 241.3 19.05
55 70 7.5 85 106 10.5 114.3 133.35 9.525 150 175 12.5 210 240 15
55 77 11 85 110 12.5 115 130 7.5 150 180 15 210 250 20
57 70 6.5 85 112 13.5 115 133 9 150 184 17 215 250 17.5
60 70 5 88.9 95.5 3.3 115 135 10 150 185 17.5 220 240 10
60 72 6 88.9 98.5 4.8 115 137 11 150 190 20 220 245 12.5
60 73 6.5 88.9 101.6 6.35 115 140 12.5 150 194 22 220 250 15
60 75 7.5 88.9 105 8.05 115 145 15 152.4 171.5 9.55 220 255 17.5
60 78 9 90 100 5 115 148 16.5 152.4 177.8 12.7 220 260 20
60 80 10 90 102 6 115 152 18.5 158.5 185 13.25 220 270 25
60 85 12.5 90 104 7 120 130 5 160 168 4 220 273 26.5
63.5 76.2 6.35 90 105 7.5 120 132 6 160 170 5 225 254 14.5
63 69 3 90 108 9 120 133 6.5 160 172 6 225 254 14.5
63 70 3.5 90 110 10 120 135 7.5 160 175 7.5 225 274 24.5
63 71 4 90 112 11 120 137 8.5 160 178 9 230 250 10
63 73 5 90 114 12 120 140 10 160 180 10 230 255 12.5
63 75 6 90 118 14 120 143 11.5 160 184 12 230 260 15
63 76 6.5 90 120 15 120 145 12.5 160 185 12.5 240 255 7.5
63 78 7.5 90 122 16 120 152 16 160 190 15 240 270 15
63 80 8.5 90 124 17 120 160 20 160 194 17 240 273 16.5
63 83 10 90 130 20 125 132 3.5 160 200 20 250 260 5
63 93 15 95 110 7.5 125 133 4 160 203 21.5 250 266 8
65 75 5 95 112 8.5 125 135 5 165 185 10 250 267 8.5
65 76 5.5 95 114 9.5 125 137 6 165 190 12.5 250 270 10
65 77 6 95 115 10 125 140 7.5 165 195 15 250 273 11.5
65 78 6.5 95 117 11 125 143 9 165.1 190.5 12.7 250 290 20
65 80 7.5 95 120 12.5 125 145 10 170 190 10 250 298 24
65 83 9 95 127 16 125 146 10.5 170 194 12 250 299 24.5
65 85 10 98.4 111.13 6.365 125 148 11.5 170 195 12.5 260 273 6.5
65 88 11.5 100 107 3.5 125 150 12.5 170 200 15 260 299 19.5
65 89 12 100 108 4 125 152 13.5 170 203 16.5 280 299 9.5
65 90 12.5 100 109 4.5 125 159 17 170 205 17.5 300 377 38.5
65 95 15 100 110 5 125 168 21.5 170 208 19 300 320 10
70 80 5 100 112 6 127 140 6.5 175 195 10 300 351 25.5
70 82 6 100 114 7 127 146 9.5 175 195 10 320 340 10
70 83 6.5 100 115 7.5 130 145 7.5 175 200 12.5 400 426 13
70 84 7
70 85 7.5
70 89 9.5
70 90 10

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