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Din2391 E355 4140 25CrMo4 Seamless Hydraulic Tube ST37.4 Pipe TORICH SAE J525

Basic Information
Place of Origin: China
Certification: ISO9001
Packaging Details: In Bundles, Woodenbox As Your Requirement
Detail Information
Name: Seamless Pipe Tube SA179 E355 Carbon Hydraulic Honed Steel Round Hot Rolled Or Cold Rolled Plain Beveled Square Cut 15 - 610 Mm Keyword: Seamless Hydraulic Tube
Standard: ASTM A53-2007, ASTM A335-2006, GB 5310-1995, BS 1387, JIS G3463-2006, DIN 1626, API, API 5CT Grade: 16mn, 15crmo, 35CRMO4, 30CrMo, A106(B,C), 10#, 20#, 45#, ST37, ST45, St52.4, ST35
Thickness: 0.5 - 20 Mm Straightness: <=0.5/1000
Length: 12M, 6m, 5.8M, 11.8M Schedule: SCH10,,SCH40,SCH60,SCH80, SCH120,SCH160 XXS
Roughness: Ra 0.2-0.4 Um Shape: Round.square.Rectangle
Tolerance: ±1% Surface Treatment: Hot Rolled And Cold Rolled
Wall Thickness: 3mm-30mm Certificate: API, CE, Bsi, RoHS, SNI, SASO, PVOC, SONCAP, SABS, Sirm, Tisi, KS, JIS, GS, ISO9001
O.D: 159mm-3200mm Ends: Plain Beveled Square Cut
High Light:

Din2391 Seamless Hydraulic Tube


25CrMo4 Seamless Hydraulic Tube


TORICH st37 4 pipe

Product Description

DIN17175 12CrMo AISI4140 4130 1045 Precision Seamless Steel Hydraulic Cylinder Pipe and Tube


Hydraulic Seamless Steel Tube, also called CDS tube, is made from the hot billets by piercing, subsequent rolling, and elongating process to be passed through the die over a mandrel plug and finally to reach the designed accurate diameter and wall thickness. Cold Drawn Seamless (CDS) manufacturing process can greatly increase the strength of the seamless steel pipe and makes it very suitable for critical high safety and high performance applications. WAN Steel brand cold drawn seamless pipes are made of high quality raw material by automatic production line with strict quality control. Our CDS tubes have high dimensional tolerances, excellent section features, better surface finish and higher mechanical properties than the corresponding grades of hot finished seamless steel tubes.WAN Steel manufactures and wholesales many types of cold drawn seamless tube available for mechanical and hydraulic applications.

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.

manufacturing process of seamless hydraulic tubing
Seamless hydraulic tubing is produced as a seamless tube by rolling and piercing bar stock.
It then gets multiple cold-drawing reductions before a final cold draw guarantees tight dimensional tolerances and excellent surface finish. After final sizing of the tube through cold drawing it undergoes intermediate annealing and a dead-soft annealing process.

The tubes surface finishing is NBK, where the tubes are phosphate and normalized which provides corrosion resistance. It is oiled inside and outside. Normalize process creates tougher metal product. During normalizing, metals will be heated at a high temperature, and it allowed to naturally cool back down to room temperature by exposure after heating. Metals that have been through this process are more formable, harder and ductile.



Outside Diameter 3mm-140mm
Thickness 0.5-20mm
Material 10#, 20#, 35#, 45#, 16Mn, 30CrMo, 20Cr, 20CrMo,15CrMo, 35CrMo, 42CrMo4, 20Mn, ST35,ST37,E235, ASTM11A, ST45, E255, A106A.B, ST55, CK45, S45C, Q345B, ST52, E355, S355j2, 4130, 4140, 4340, SCM440, SCM415
Surface Black or bright
Standard GB/T8713, GB/T3639, GB/T8162, GB/T8163, ASTM-A519, EN10305-1, EN10305-4, JIS-G3445, DIN2391, BS6323, GOST8734-75
Processing Cold rolled /cold drawn
Delivery Condition

(1) BK (+C): No heat treatment after last cold forming process;

(2) BKW (+LC): After last heat treatment there is a light finishing pass (cold drawing);

(3) BKS (+SR): After the final cold forming process the tubes are stress relieve annealed;

(4) GBK (+A): After the final cold forming process the tubes are annealed in a controlled atmosphere;

(5) NBK (+N): After the final cold forming process the tubes are annealed above the upper transformation point in a controlled atmosphere.

Packing Woven bag/ wooden or crate carton/ bundle packing/ plain end or vanished as per customer’s request.
Delivery time Normally 15-25 working days



Din2391 E355 4140 25CrMo4 Seamless Hydraulic Tube ST37.4 Pipe TORICH SAE J525 0


Q: What product information must I provide before making a purchase?
Please provide the grade, width, thickness, and surface treatment requirements, as well as the quantities you require.

Q: What shipping ports are there?
We normally ship from Shanghai,Tianjin, Qingdao, and Ningbo ports

Q: Is it possible to send samples?
Of course, we offer free samples and express shipping to customers all over the world.

Q: Do you offer a service for customized products?
Yes, we can produce according to your specifications and drawings.

Q: Can I pay you a visit at your factory?
Customers from all around the world are welcome to visit our factory.

Q: Can you assist me in importing steel products for the first time?
Yes, we have shipping agent who will arrange the shipment with you.

Q: Do you have any MOQ limit for production?
We don’t have any MOQ limit. But as for our steel pipe product, we usually use container transport for lower freight. In the case of express delivery, high freight charges will be generated.

Q: Is it OK to print my logo on the product or the carton packing?
Yes. Please inform us formally before our production and confirm the design firstly based on our sample.

Q: How to pack the product?
The inner layer has a waterproof paper outer layer, iron packaging, and is fixed with a fumigated wooden pallet. It
can effectively protect products from corrosion during ocean transportatio

Contact Details

Whatsapp : +8613961408918