Audited Supplier
Product Description
Honed tube for hydraulic cylinder | ||
Standard | DIN2391, EN10305, JIS G3445, ASTM A519, GB/T 8713... | |
Material | ST45, ST52, E355, E355SR, STKM13C, SAE1026, 20#, Q235B, CK45... | |
Heat treatment | BK+S | |
Specification | Outer diameter(mm) | Inner diameter(mm) |
50-300mm | 40-250 | |
I.D Tolerance | H8-H9 | |
Length | 3-9m (Customers usually choose the 4~5.8m) | |
Straightness | 1/1000 | |
ID roughness | RA 0.4micron(max) | |
Technology | Honed & SRB(SKIVED AND ROLLER BURNISHED ) | |
Scope | Honed tube for hydraulic cylinder, swivel crane, injection machine and construction machine application | |
Product Description
Standard: ASTM A519, DIN2391, EN10204-1
Grade: 1020, C45, ST52, ST52.3, 27SiMn, 25Mn
Technology: Cold Drawn, Cold roll, Honed, Skived, Burnished
Application: construction machinery, metallurgical machinery, plastic machinery, mining machinery, road construction machinery, hydraulic and pneumatic cylinders
| Manufacturing Process | Tube ID | Length | Straightness | Dimensional Accuracy | Tolerance on ID | Inner Bore Roughness |
| honing | Φ40-800mm | ≤13m | 0.2-0.3mm | H8~H9 | ±8% | <=0.8 um |
Chemical Composition
| grade | C | Si | Mn | P | S | Cr | Ni | Cu | V | Al |
| 1020 | 0.17-0.23 | 0.17-0.37 | 0.35-0.65 | <=0.035 | <=0.035 | <=0.25 | <=0.30 | <=0.25 | - | - |
| C45 | 0.42-0.50 | 0.17-0.37 | 0.50-0.80 | <=0.035 | <=0.035 | <=0.25 | <=0.30 | <=0.25 | - | - |
| 16Mn | 0.13-0.19 | 0.20-0.60 | 1.20-1.60 | <=0.030 | <=0.030 | <=0.030 | <=0.30 | <=0.25 | - | - |
| 27SiMn | 0.24-0.32 | 1.10-1.40 | 1.10-1.40 | <=0.035 | <=0.035 | <=0.30 | <=0.30 | <=0.20 | - | - |
| ST52 | <=0.20 | <=0.50 | <=1.70 | <=0.035 | <=0.035 | <=0.30 | <=0.50 | <=0.30 | <=0.15 | - |
| ST52.3 | <=0.18 | <=0.50 | <=1.70 | <=0.030 | <=0.25 | <=0.30 | <=0.50 | <=0.30 | <=0.15 | ≥0.015 |
Mechanical Property
| Grade | Cold finished (hard) (BK) | Cold finished (hard) (BK+S) | Hardness | Impact Value (-20°C) J | |||
| T.S bN/mm2 | Elongation 85% | T.S bN/mm2 | Y.S SN/mm2 | Elongation 85% | |||
| 1020 | ≥550 | ≥8 | ≥520 | ≥400 | ≥15 | 170 | -- |
| C45 | ≥680 | ≥5 | ≥630 | ≥520 | ≥12 | 190 | -- |
| 16Mn | ≥640 | ≥5 | ≥600 | ≥520 | ≥14 | 160 | -- |
| 27SiMn | ≥780 | ≥5 | ≥700 | ≥580 | ≥10 | 220 | -- |
| ST52 | ≥660 | ≥8 | ≥620 | ≥520 | ≥15 | 190 | -- |
| ST52.3 | ≥660 | ≥8 | ≥620 | ≥520 | ≥15 | 190 | ≥27 |
Size Tolerance(mm)
| ID size | ID Tolerance | WT Tolerance | ||||
| H7 | H8 | H9 | H10 | H11 | ||
| 30 | +0.0210 | +0.0330 | +0.0520 | +0.0840 | +0.1300 | ±5% |
| >30-50 | +0.0250 | +0.0390 | +0.0620 | +0.1000 | +0.1600 | |
| >50-80 | +0.0300 | +0.0460 | +0.0740 | +0.1200 | +0.1900 | |
| >80-120 | +0.0350 | +0.0540 | +0.0870 | +0.1400 | +0.2200 | |
| >120-180 | +0.0400 | +0.0630 | +0.1000 | +0.1600 | +0.2500 | |
| >180-250 | +0.0460 | +0.072 | +0.1150 | +0.1850 | +0.2900 | |
| >250-315 | +0.0520 | +0.0810 | +0.1300 | +0.2100 | +0.3200 | |
| >315-800 | +0.0570 | +0.0890 | +0.1400 | +0.2300 | +0.3600 | |
| OD | Tolerance | OD | Tolerance |
| ≤Φ40 | ±0.15 | Φ160~200 | ±0.80 |
| Φ40~60 | ±0.25 | Φ200~240 | ±1.00 |
| Φ60~80 | ±0.30 | Φ240~340 | ±1.50 |
| Φ80~100 | ±0.40 | Φ340~440 | ±2.00 |
| Φ100~160 | ±0.50 | Φ440~520 | ±2.50 |
Generally, seamless pipes are made of 10, 20, 30, 35, 45 and other high-quality carbon steel 16Mn, 5MnV and other low-alloy structural steel or 40Cr, 30CrMnSi, 45Mn2, 40MnB and other combined steel hot-rolled or cold-rolled. Seamless pipes made of low carbon steel such as 10 and 20 are mainly used for fluid transportation pipelines. 45, 40Cr and other medium carbon steel seamless pipes are used to manufacture mechanical parts, such as the stressed parts of automobiles and tractors.
Product Description
Tolerance OD: DIN 2391
Advantage of Product
1)Professional & skilled, reliable.
2)One-stop total solution
3)ready stock goods with fast delivery
4)Customizable: Non-standard sizes are also available
5)Small quantity is acceptable
6)Cash back: Refund or replacement for any product faulty
Liaocheng Xinglong Seamless Pipe Manufacturing Co., Ltd. was established in 2004 and covers an area of 15,000 square meters. The total assets exceed 250 million yuan. The company has 850 employees, including 180 technicians. The annual output is 60,000 tons. We have also established an effective and complete quality control system. In 2006, our company passed the ISO9001 quality system certification. And in 2009 began to run in accordance with API 5L and API 5CT. Standards: Gb8162-2008, Gb8163-2008, Gb3087-2008, Gb5310-1995, Gb6479-2000, ASTM A53, ASTM A106, API 5L, API 5CT, DIN, JIS, etc.
Our company is equipped with sophisticated manufacturing and testing equipment. We have our own R&D team, developed the intellectual property rights of key technologies, and launched a large number of new products. The R&D department has joined a number of scientific research institutes and hired senior steel researchers. We have good quality control on the production of steel pipes, aluminum plates, copper plates and other products. Welcome to consult and look forward to working with you!
FAQ:
1. Q: Are you a factory or a trading company?
A: We not only have our own factory but also have own trading company.
2. Q: Can you provide samples?
A: Yes, if the sample is available in stock.
3. Q: Can you arrange the shipment?
A: Sure, we have permanent freight forwarder who can gain the best price from most ship company and offer professional service.
4. Q: What is the delivery time?
A: It is based on the order, normally 15 - 20 days after receiving the deposit or L/C at sight.
5. Q: Do you have quality control?
A: Yes, we have gained BV, SGS authentication.
6. Q: What are your payment terms?
A: T/T, 30% advance, and balance against the copy of B/L within 3-5 days OR 100% irrevocable L/C at sight.
