| Customization: | Available |
|---|---|
| After-sales Service: | Yes |
| Warranty: | 12 Months |
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| Type: | High-precision cold-drawn seamless tube |
| Standard: | GB/T3639-2018, GB/T 5777-2008,the technology agreement |
| Material steel: | 45#, 16Mn(Q345B), 25Mn, 27SiMn, SY720, ZNP460 |
| Internal diameter Tolerance: | H8, H9,H10 |
| Straightness rate/roundness rate/mechanical performance : | As agreement |
| Chrome-plated | Area and thickness as request |
| Size: | 100mm-500mm |
| Shape: | Round, square |
| Package: | As request |
| Usage: | 1. For oil cylinder's outside cylinder and piston rod; 2. For transportation of natural gas, oil, kerosene, etc to avoid leakage; 3. For making parts of some machines such as the drive shaft of an automobile or the drill pipe of oil and bicycle frames; 4. For some large machinery such as boiler heating supply pipe; 5. For the storage of liquefied natural gas such as taxi trunk cylinders. |
| China CB |
Japan JIS |
United States AISI. ASTM |
United Kingdom BS |
Germany DIN |
France NF |
Former Soviet Union r OCT |
| Q235-A·F | SS41 | A36. A283C | Ust37-2 | |||
| Q235-A | SS41A. B | Rst37-2 | CT2 | |||
| 20 | S20C | C1020 | En2C | C22 | C20 | 20 |
| 35 | S35C | C1035 | En&A | C35 | XC38 | 35 |
| 20g | SB42 | A285.Gr.B AM14. GrB |
1633GrB | Ast41 | M2C | 20K |
| 20 | STPG38. 42 | A106. A53 | S2354 | |||
| 16Mn | SM50B SM22 |
1633. Gr.1 | st52-3 | 16r | ||
| 16MnR | SPV36 | A516. A515.Gr·60 Gr·70 |
19Mr5 | |||
| 15MnV | HTPS7VW | AZ25.GrA A225. GrB |
||||
| 40Mn | C1036 | En158 | 40MA | 40Mr5 | 40T | |
| 40Cr | SCr4 | 5140 | En18 S117 |
41C4 | 38C4 | 40X |
| 120Mo | A335. P2 A213. GrB |
3064-660 1501-620 |
130MoM | 12CD4 | 12XM | |
| 150Mo | STT42 STB42 |
A387. Gr BS | C42 1653 | 160Mo4 | 15CD4 | 15XM |
| 35CMo | SCM3 | 64132 64135 |
En198 | 34CT4 | 35CD4 | 35XM |
| 0tr13 | SUS410 | 4105 S41000 |
X7Cn13 | 26C13 | 08X13 | |
| 0Cr18N9 | SUS304 | 304 S30400 |
304S15 | X5CrNi189 | ZON18.09 | 08X18H10 |
| OCr18Ni10Ti | SUS321 | 321 S32100 |
321512 321520 |
X10CNiTi189 | Z6CNT18.10 | 0EX17H13M2 |
| Kind | Steel Grade | Chemical Composition (%) | Mechanical Properties |
| Carbon Steels |
Q235 | C: 0.12 - 0.22, Si: ≤0.30, Mn: 0.30 - 0.70, P: ≤0.045, S: ≤0.050. | Yield strength: 235 MPa, Tensile strength: 375 - 500 MPa, Elongation: ≥26%. |
| 45# | C: 0.42 - 0.50, Si: 0.17 - 0.37, Mn: 0.50 - 0.80, P: ≤0.035, S: ≤0.035. | Yield strength: ≥355 MPa, Tensile strength: ≥600 MPa, Elongation: ≥16%. | |
| Alloy Steels | 20CrMnTi | C: 0.17 - 0.23, Si: 0.17 - 0.37, Mn: 0.80 - 1.10, Cr: 1.00 - 1.30, Ti: 0.04 - 0.10, P: ≤0.035, S: ≤0.035. | Yield strength: ≥835 MPa, Tensile strength: ≥1080 MPa, Elongation: ≥10%. |
| 38CrMoAl | C: 0.35 - 0.42, Si: 0.20 - 0.45, Mn: 0.30 - 0.60, Cr: 1.35 - 1.65, Mo: 0.15 - 0.25, Al: 0.70 - 1.10, P: ≤0.035, S: ≤0.035. | Yield strength: ≥835 MPa, Tensile strength: ≥980 MPa, Elongation: ≥14%. | |
| Stainless Steels |
0Cr18Ni9 (304) | C: ≤0.07, Si: ≤1.00, Mn: ≤2.00, Cr: 17.00 - 19.00, Ni: 8.00 - 11.00, P: ≤0.035, S: ≤0.035. | Yield strength: ≥205 MPa, Tensile strength: ≥520 MPa, Elongation: ≥40%. |
| 1Cr18Ni9Ti | C: ≤0.12, Si: ≤1.00, Mn: ≤2.00, Cr: 17.00 - 19.00, Ni: 8.00 - 11.00, Ti: 5(C - 0.02) - 0.80, P: ≤0.035, S: ≤0.035. | Yield strength: ≥205 MPa, Tensile strength: ≥520 MPa, Elongation: ≥40%. | |
| Tool Steels |
T8 | C: 0.75 - 0.84, Si: ≤0.35, Mn: ≤0.40, P: ≤0.030, S: ≤0.020. | Hardness: HRC 62 - 64 (after proper heat treatment). High wear resistance and suitable for making cutting tools. |
| Cr12MoV | C: 1.45 - 1.70, Cr: 11.00 - 12.50, Mo: 0.40 - 0.60, V: 0.15 - 0.30, Si: ≤0.40, Mn: ≤0.40, P: ≤0.030, S: ≤0.030. | Hardness: HRC 58 - 62 (after heat treatment). It has high hardness, good wear resistance and toughness, and is widely used in cold work molds. | |
| High-Speed Steels |
W18Cr4V | C: 0.70 - 0.80, W: 17.50 - 19.00, Cr: 3.80 - 4.40, V: 1.00 - 1.40, Si: ≤0.40, Mn: ≤0.40, P: ≤0.030, S: ≤0.030. | Hardness: HRC 63 - 66 (after heat treatment). It has excellent red hardness and wear resistance, and is suitable for high-speed cutting tools. |
| High-Speed Steels |
M2 (W6Mo5Cr4V2) | C: 0.80 - 0.90, W: 5.50 - 6.75, Mo: 4.50 - 5.50, Cr: 3.80 - 4.40, V: 1.75 - 2.20, Si: ≤0.40, Mn: ≤0.40, P: ≤0.030, S: ≤0.030. | Hardness: HRC 63 - 66 (after heat treatment). It has better toughness and cutting performance than W18Cr4V, and is widely used in various high-speed cutting tools. |
We have a 400-ton hydraulic cold drawn unit, mainly produce cold drawn pipes,honing pipes and scrape roll pipes of various specifications and materials as round (diameter 100mm to 500mm) or special-shaped ones.
Changsha Dalishen Hydraulic Engineering Co., Ltd., founded in 2007, is a distinguished Hi-tech enterprise passionately dedicated to the innovation, production, and marketing of high-precision seamless steel pipes, specialized pipes for oil cylinders, cutting-edge concrete delivery cylinders, expertly crafted oil cylinders, advanced concrete pumping system assemblies, and premium cylinder fittings. CSDLS proudly stands as South China's pioneering manufacturer of hydraulic cold-drawn seamless steel pipes and plays an integral role in crafting the national standards within our industry. Our impressive portfolio boasts 13 granted utility patents. Bolstered by state-of-the-art R&D and machining facilities, we are adept at customizing to your exact drawings. Our expansive factory spans an impressive 29,000 square meters. With robust production capabilities, we ensure timely mass production to meet high demands. Our esteemed partnerships include industry giants like SANY, Zoomlion, ZMJ, LiuGong, and XANJER.
CSDLS is a distinguished leader in the realm of hydraulic engineering, boasting an array of cutting-edge equipment within our factory. Our state-of-the-art machinery is meticulously designed to craft high-quality cylinders, ensuring each detail is executed with precision. We also feature specialized equipment dedicated to producing robust conveying cylinders, providing exceptional support for seamless and efficient transportation. Moreover, our professional machinery for manufacturing cold-drawn tubes guarantees unparalleled tube quality. Complementing these are our advanced facilities for producing an array of cylinder accessories. Collectively, this arsenal of equipment underpins our unwavering commitment to delivering superior hydraulic products, and the images provide a glimpse into our formidable production capabilities..
CSDLS has always taken innovation as its core, continued to carry out research on new technologies, new products and new processes, and developed hydraulic products with high technologies and strong market competitiveness.
Exceptional Technical Expertise: Our team is composed of highly skilled engineers and technical specialists who leverage cutting-edge hydraulic technologies and advanced production equipment to assure each product not only meets but exceeds world-class standards.
Comprehensive Customization Capabilities: We cater to both standard product requirements and unique customization demands, offering flexible, precise solutions meticulously tailored to meet the distinct needs of our clients.
Stringent Quality Management: Endorsed by ISO9001 and numerous international certifications, we implement rigorous quality controls at every production phase, ensuring our products are synonymous with high durability and steadfast stability.
Reliable Delivery and Service: Acknowledging the essence of time for our clientele, our efficient supply chain and logistics systems guarantee punctual deliveries. Additionally, we provide round-the-clock technical support and unmatched after-sales service.
Competitive Pricing Advantage: Balancing supreme quality with affordability, we extend highly competitive pricing, empowering our customers to achieve a significant edge in the marketplace.
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