20Cr Honed Tube
Tolerance EXT: DIN2391, EN10305, GB/T 1619
Material: ST52,CK45,4140,SCM440,16Mn,42CrMo,E355,Stainless Steel 304/316,Duplex 2205,etc.
Protection: Anti-rust oil on inside and outside surface, plastic caps in both ends.
Packing: Bundle with steel strip and PE sheet or wooden case
Delivery Condition: BK, BK+S, GBK, NBK
Classification :
PRODUCT DETAILS
Description
Honing tube is a high-precision cold drawn seamless steel tube that obtains an exceptionally smooth and precisely sized inner surface through honing processing. It has ultra-high precision, mirror level smoothness, high wear resistance, and good mechanical properties, and is widely used in high-end industrial fields such as hydraulic cylinders, cylinders, and engineering machinery.
Standard
Chemical Properties
| Material | C% | Mn% | Si% | S% | P% |
| 20# | 0.17-0.23 | 0.35-0.65 | 0.17-0.37 | ≤0.035 | ≤0.035 |
| ST45 | ≤0.21 | ≥0.4 | ≤0.35 | ≤0.025 | ≤0.025 |
| E255 | ≤0.21 | 0.4-1.1 | ≤0.35 | ≤0.025 | ≤0.025 |
| 45# | 0.42-0.50 | 0.50-0.80 | 0.17-0.37 | ≤0.035 | ≤0.035 |
| Q345B | ≤0.20 | ≤1.70 | ≤0.50 | ≤0.035 | ≤0.035 |
| E355 | ≤0.22 | ≤1.6 | ≤0.55 | ≤0.025 | ≤0.025 |
| ST52 | ≤0.22 | ≤1.6 | ≤0.55 | ≤0.04 | ≤0.04 |
| 25Mn | 0.22-0.29 | 0.70-1.0 | 0.17-0.37 | ≤0.035 | ≤0.035 |
| 27SiMn | 0.24-0.32 | 1.10-1.40 | 1.10-1.40 | ≤0.035 | ≤0.035 |
Mechanical Properties
| Final Supply Condition |
Cold finished (Hard)(BK) |
Cold drawn and stress-relieved (BK+S or + SR) | Hardness HB | |||
| Parameters | T. S obN/mm² |
Elongation δ5% |
T. S obN/mm² |
Y. S OsN/mm² |
Elongation δ5% |
|
| 20#(A106B,ST45,E255) | >=550 | >=8 | >=520 | >=375 | >=12 | 175 |
| 45#(CK45) | >=650 | >=5 | >=600 | >=500 | >=10 | 190 |
| Q345B(ST52,E355) | >=640 | >=5 | >=600 | >=520 | >=15 | 190 |
| 25Mn | >=640 | >=5 | >=600 | >=510 | >=15 | 195 |
| 27SiMn | >=840 | >=5 | >=720 | >=600 | >=10 | 210 |
| Popular Standard and Steel Grade | |
| EN10305-1 | E355 E235E410E470 C45E |
| DIN2391-1 | ST52 ST45 ST52.3 |
| ASTM A519 | SAE1020 SAE1045 SAE1026 |
| GB/T | 20# 45# 16Mn Q345B Q345D Q345E 42CrMo 27SiMn |
| Heat Treating Method/ Delivery Condition | ||||
| BK | BKS | GBK | NBK | Q+T |
| +C | +SR | +A | +N | Q+T |
| Cold drawn | Stress relieved | Annealed | Normalized | QUENCHED+TEMPERED |
Specification
| ID | Tolerance for ID (μm) | |||
| H7 | H8 | H9 | H10 | |
| 30 | +21 0 |
+33 0 |
+52 0 |
+840 |
| >30-50 | +25 0 |
+39 0 |
+62 0 |
+1000 |
| >50-80 | +30 0 |
+46 0 |
+740 | +1200 |
| >80-120 | +35 0 |
+54 0 |
+870 | +1400 |
| >120-180 | +40 0 |
+63 0 |
+100 0 |
+1600 |
| >180-250 | +46 0 |
+72 0 |
+115 0 |
+1850 |
| >250-315 | +52 0 |
+81 0 |
+1400 | +2100 |
| >315-400 | +57 0 |
+89 0 |
+1700 | +2300 |
| Part of Size List (ID*OD) | ||
| 40*50 | 100*127 | 240*273 |
| 40*55 | 110*130 | 250*266 |
| 50*60 | 120*140 | 250*280 |
| 50*63 | 120*145 | 250*300 |
| 60*70 | 125*140 | 280*323 |
| 60*73 | 125*145 | 280*325 |
| 63*73 | 140*165 | 300*320 |
| 63*76 | 140*168 | 300*356 |
| 70*80 | 150*180 | 320*340 |
| 70*82 | 160*184 | 320*356 |
| 70*85 | 160*194 | 320*370 |
| 80*90 | 170*200 | 350°370 |
| 80*92 | 180*210 | 400*420 |
| 80*95 | 200*216 | |
| 80*100 | 200*220 | |
| 90*102 | 200*232 | |
| 90*105 | 200*245 | |
| 100*114 | 220*250 | |
| 100*121 | 220*273 | |
PACKAGING AND SHIPPING
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FACTORY WORKSHOP
APPLICATION FIELD
Energy Transmission
Construction Engineering
Energy Transmission
Power Equipment
Interior Decoration
Architectural Decoration
FAQ
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Can you provide samples?
What services do you provide? A: OEM, ODM.
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