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Basic Info.
Product Description
Name : honed tubes, honing pipe, hydraulic cylinder tubes, pneumatic cylinder tubes, honed pipe, honing tube, seamless
honed steel tube, precision tubes, cold drawn honed tubes, skived tubes, skived and roller burnished tubes, skived pipes,
SRB tube, SRB pipe, hydraulic SRB tube, hydraulic cylinder skived tubes
EAST AI presents the E355 C20 DIN2391 St52 Steel Honed Tube, designed for hydraulic cylinders with precise H7, H8, H9 tolerances. This high-quality steel tube ensures exceptional durability and precision, meeting industrial standards for robust hydraulic applications.
Discover the pinnacle of durability with our High-Quality Seamless Steel Pipe, tailored for industrial applications. Crafted using advanced manufacturing techniques, this corrosion-resistant pipe offers unparalleled strength and precision. Ideal for high-pressure environments, our seamless tubing is designed to excel in oil, gas, and heavy-duty applications. Its superior construction ensures reliability and longevity, making it the go-to choice for professionals seeking efficiency and excellence in their operations.
Popular standard and steel grade:
| EN10305-1 | E355 E235 E410 E470 C45E |
| DIN2391-1 | ST52 ST45 ST52.3 |
| ASTM A519 | SAE1020 SAE1045 SAE1026 |
| GB/T | 20# 45# 16Mn Q345B Q345D Q345E 42CrMo 27SiMn |
Application: hydraulic cylinder, pneumatic cylinder,Jack, cylinder barrel
Manufacture Method: cold drawn, cold rolled, Hot rolled+Deep Hole Boring
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 |
Hydraulic & pneumatic tube size and parameters:
| Manufacture method | Cylinder ID (mm) | Length (m) | Straightness (mm/m) | Tolerance on ID | Tolerance on WT | Roughness (μm) |
| Cold drawn | 40-420 | ≤16M | 0.2-0.5 | Depends on requirement | ±8% | 0.8-1.6 |
| Cold rolled | 30-100 | ≥14M | 0.2-0.5 | Depends on requirement | ±5% | 0.8-1.2 |
| Cold drawn-honed | 40-420 | 14M | 0.2-0.3 | H8-H9 | ±8% | 0.2-0.8 |
| Cold drawn-skived & burnished | 40-300 | 9M | 0.2-0.3 | H8-H9 | ±8% | ≤0.4 |
| Deep hole boring- honed | 50-1000 | 12M | 0.2-0.3 | H8-H9 | ±8% | ≤0.8 |
| Deep hole boring- skived | 50-300 | 9M | 0.2-0.3 | H8-H9 | ±8% | ≤0.4 |
Mechanical property:
| 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 |
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 |
Tolerance on ID:
| ID | Tolerance for ID (μm) | |||
| 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 |
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 | |
Q1: Are You Manufacture or Trade Company?
Q2: How can we guarantee quality?
Always a pre-production sample before mass production;Always final Inspection before shipment;
Q3: What is your terms of payment ?
1.T/T: 30% deposit in advance, the balance 70% paid before shipment
3.Upon negotiation
Q4: Can you provide Certificates for aluminum materials ?
Yes,we can supply MTC-Material Test Certificate.
Q5: Can you provide sample?
Yes, we can provide you sample, but you need to pay for the sample and freight firstly. We will return the sample fee after you make an order.