- Overview
- Product Introduction
- Packaging and Shipping
- FAQ
Basic Info.
Model NO.
DIN 2391 St52-3
Usage
Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Machinery Industry, Construction & Decoration, Special Purpose
Section Shape
Round
Application
Fluid Pipe, Boiler Pipe
Length
5.8m, 6.4m, 6m, 11.8m, 12m, or as Required
Thickness
1-120 mm
Delivery Time
8-14 Days
Processing Service
Bending, Welding, Decoiling, Punching, Cutting
Transport Package
Standard Seaworthy Packing
Trademark
YF STEEL
Origin
Tianjin, China
Production Capacity
10000 Tons Per Month
Product Description
Hydraulic Honed Pipe 1. Description: Honed tube is a kind of smooth bore steel tube used to manufacture hydraulic cylinder barrels that is the core part of a piece of hydraulic cylinder.
2. Commodity: Cold drawn seamless honed tube for hydraulic cylinder
3. Size range: 40mm*30mm-580mm*500mm
4. Available steel grade:
EN 10305-1 | E195,E235,E355,C35E,C45E,E410,E470,S355J2,S355J2G3,25CrMo4,34CrMo4,42CrMo4 |
DIN 2391-2 | ST37,ST44,ST52 |
ASTM A519 | 1010,1020,1026,1045,1518,1524,1541,4130,4140,4145,4340,8620 |
JIS | STKM 13A, STKM 13B, STKM 13C |
GB | Q345B,25Mn,16Mn,Q345D,Q345E,20#,45#,20CrMo,25CrMo,30CrMo,35CrMo,42CrMo |
5. Manufacture method: Cold rolled, hydraulic cold drawn, hot rolled+deep hole boring
6. Delivery condition:
| BK | BKW | BKS | GBK | NBK | Q+T |
| +C | +LC | +SR | +A | +N | |
| Cold rolled | Cold drawn | Stress relieved | Annealed | Normalized | Quenched+Tempered |
7. Bore treatment: Honing, skiving&roller burnishing
8. Bore roughness control: Ra0.25um max or Ra0, 35um max for honed tubes, Ra0.25um max for skived&roller burnished tubes.
9. End finish: Plain ends with square cuts, free of burrs for honed tubes. Little bevelled ends for skived&roller burnished tubes.
10. Standard export packing: In bundles tied with steel strips. Int&ext oil coating. End plastic caps. External packing by PVC bags and knit bags.
11. Customized packing and marking can be provided upon request.
12. H8 tolerance:
| ID range | Tolerance | ID range | Tolerance |
| 18< d ≤30 | +0/+0.033 | 180< d ≤250 | +0/+0.072 |
| 30< d ≤50 | +0/+0.039 | 250< d ≤300 | +0/+0.081 |
| 50< d ≤80 | +0/+0.046 | 300< d ≤315 | +0/+0.081 |
| 80< d ≤120 | +0/+0.054 | 315< d ≤400 | +0/+0.089 |
| 120< d ≤180 | +0/+0.063 | 400< d ≤500 | +0/+0.097 |
13. Difference between honed tube and skived&roller burnished tube: In hydraulic cylinder industry, there are 2 solutions for bore treatment: Honing, and skiving&roller burnishing. Honing or skiving&roller burnishing leads to different internal surface image, but both ensure good roughness.
Hydraulic steel tube is designed to convey liquid fluids to among hydraulics components, fittings, valves, flanges, and other tools. It is made of material E355 (ST 52.4) or E235 (ST 37.4). These two grades have different chemical composition. This helps to control the working pressure.
| Chemical Composition (%) | Carbon (C) | Silicon (Si) | Manganese (Mn) | Phosphorus (P) | Sulfur (S) |
| E355 (ST52.4) | ⩽ 0.22 | ⩽ 0.55 | ⩽ 1.6 | ⩽ 0.045 | ⩽ 0.045 |
| E235 (ST37.4) | ⩽ 0.17 | ⩽ 0.35 | ⩽ 1.2 | ⩽ 0.045 | ⩽ 0.045 |
Hydraulic tube is made according to DIN 2391/C (DIN EN 10305-1) or DIN 2445/2 (DIN EN 10305-4) standards and it is available in millimeters, inches outer diameter, and inches nominal bore size.
Pipes, Tubes and Hollow Sections
Norms
- API 5L - Line Pipe
- ASTM A 53 - Black and Hot-Dipped, Zinc-Coated, Welded and Seamless, Steel Pipe
- ASTM A 106 - Seamless Carbon Steel Pipe for High-Temperature Service
- ASTM A 213 - Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
- ASTM A 269 - Seamless and Welded Austenitic Stainless Steel Tubing for General Service
- ASTM A 312 - Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes
- ASTM A 333 - Seamless and Welded Steel Pipe for Low-Temperature Service
- ASTM A 335 - Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service
- ASTM A 358 - Electric-Fusion-Welded Austenitic Chromium-Nickel Stainless Steel Pipe for High-Temperature Service and General Applications
- ASTM A 671 - Electric-Fusion-Welded Steel Pipe for Atmospheric and Lower Temperatures
- ASTM A 672 - Electric-Fusion-Welded Steel Pipe for High-Pressure Service at Moderate Temperatures
- ASTM A 790 - Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe
- ASTM A 928 - Ferritic/Austenitic (Duplex) Stainless Steel Pipe Electric Fusion Welded with Addition of Filler Metal
- EN 10208-2 - Steel pipes for pipelines for combustible fluids - Part 2: Pipes of requirement class B
- EN 10210-1/2 - Hot finished structural hollow sections of non-alloy and fine grain steels
- EN 10216-1 - Seamless steel tubes for pressure purposes - Part 1: Non-alloy steel tubes with specified room temperature properties
- EN 10216-2 - Seamless steel tubes for pressure purposes - Part 2: Non-alloy and alloy steel tubes with specified elevated temperature properties
- EN 10217-1 - Welded steel tubes for pressure purposes - Part 1: Non-alloy steel tubes with specified room temperature properties
- EN 10217-2 - Welded steel tubes for pressure purposes - Part 2: Electric welded non-alloy and alloy steel tubes with specified elevated temperature properties
- EN 10219-1/2 - Cold formed welded structural hollow sections of non-alloy and fine grain steels
- EN 10297-1 - Seamless circular steel tubes for mechanical and general engineering purposes - Part 1 Non-alloy and alloy steel tubes
Grade
- API 5L Gr. A, B, X42, X52, X60, X65, X70
- ASTM A 53 Gr. A, Gr. B
- ASTM A106 Gr. A, B, C
- ASTM A 213 TP 304, 304L, 304H, 316, 316L, 316H, 321, 321H, T5, T9, T11
- ASTM A 269 TP 304, 304L, 304H, 316, 316L, 316H, 321, 321H
- ASTM A 312 TP 304, 304L, 304H, 316, 316L, 316H, 321, 321H
- ASTM A 333 Gr. 3, Gr. 6 ASTM A 335 P1, P2, P5, P9, P11, P12, P22, P91, P92
- ASTM A 358 TP 304, 304L, 304H, 316, 316L, 316H, 321, 321H
- ASTM A 671 CC 60, CC 65, CC 70
- ASTM A 672 CC 60, CC 65, CC 70
- ASTM 790 UNS S31803, UNS S32205, UNS S32750, UNS S32760
- ASTM A928
- EN 10208-2 L245, L 290, L360
- EN 10210-1 S235 JRH, S275 JOH, S275 J2H, S355 JOH, S355 J2H
- EN 10216-1 P235 TR1/2
- EN 10216-2 P235 GH, P265 GH
- EN 10217-1 P235 TR1/2, P275 TR1/2
- EN 10217-2 P235 GH, P265 GH
- EN 10219-1 S235 JRH, S275 JOH, S275 J2H, S355 JOH, S355 J2H
- EN 10297-1 E235, E275, E315, E355, E470
1) Packaging: In bundles tied with steel strips. Int&ext oil coating. End plastic caps. External packing by PVC bags and knit bags.
2) Shipping: We have long-term cooperation with many experienced shipping companies and will find the most suitable mode of transportation for you.
3) Trade terms: FOB/CIF/CFR
4) Shipping port: Qingdao/Tianjin/Shanghai
5) Shipment: A: Length: ≤6m, loaded in 20GP Container. B: Length: ≤12m, loaded in 40GP Container.
Remark: Size of 20GP Container (inside :5898*2352*2393mm); Size of 40GP Container (inside:12032*2352*2393mm); Size of 40HQ Container (inside:12032*2352*2698mm).
6) Delivery time: Normal size: 7-15days send from warehouse directly. Special size:15-30days custom made for you.
Q1:Can you send samples?A:Of course, we can provide customers with free samples and express shipping service to all over of the world.
Q2:What product information do I need to provide?
A:Please kindly provide the grade, width, thickness, surface treatment requirement should you have and quantities you need to purchase.
Q3:It's my first time to import steel products, can you help me with it?
A:Sure,we have agent to arrange the shipment, we will do it together with you.
Q4:What ports of shipment are there?
A:Under normal circumstances, we ship from Shanghai, Tianjin, Qingdao, Ningbo ports, you can specify other ports according to your needs.
Q5:What about product prices information?
A:Prices various according to periodic price changes of raw materials.
Q6:What is your terms of payment ?
A:Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shipment or based on BL copy or LC at sight.
Q7:Do you provide custom made Products service?
A: Yes,if you have your own design , we can produce according to your specification and drawing.
Q8:What are the certifications for your products?
A:We have ISO 9001, MTC, third parties' inspections are all available such SGS, BV ect.
Q9:How long does your delivery time take?
A:In general, our delivery time is within 7-15 days, and may be longer if the quantity is extremely large or special circumstances occur.
Q10: How many countries you already exported to?
A:We have exported to America, Canada, Brazil, Chile, Colombia, Russia, Ukraine, Thailand, Myanmar, Vietnam, India, Kenya, Ghana,somalia and other African countries.Our export experience is rich, we familiar with different market demands, can help customers avoid a lot of trouble.
Q11:Can I go to your factory to visit?
A:Of course, we welcome customers from all over the world to visit our factory.
Q12:Does the product have quality inspection before loading?
A:Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed and customers can appoint third parties to inspect the products before loading too.
Q13:How to pack the products?
A: Standard export sea-worthy packaging, the inner layer has a waterproof paper outer layer with iron packaging and is fixed with a fumigation wooden pallet. It can effectively protect products from corrosion and various climate changes during ocean transportation.
Q14:What is your working time?
A:In general, our online service time is Beijing time: 8:00-22:00, after 22:00, we will reply to your inquiry in the coming working day.