TORICH INTERNATIONAL LIMITED
| Payment Terms | L/C,D/A,D/P,T/T,MoneyGram,Western Union |
| Supply Ability | 60000 Ton/Tons per Year |
| Delivery Time | 20-30days upon products |
| Packaging Details | In bundles or in wooden boxes. |
| Application | Hydraulic Cylinders |
| Outer diameter(round) | 30 - 325 mm |
| Thickness | 2 - 50 mm |
| Standard | ASTM,DIN,GB,JIS,API |
| Technique | Cold Drawn,Hot Rolled,Cold Rolled,ERW,Hot Rolled/Cold Drawn |
| Grade | ST52V E355 SAE1026 DIN2391 St52GB 20MnV |
| Section shape | Round,Rectangular |
| Length | 6M or as requirement,As customer's require,8m,5.8m,2.5-8m |
| Brand Name | TORICH |
| Model Number | Low Carbon Steel Tube |
| Certification | ISO9001 ISO 14001 TS16949 |
| Place of Origin | Zhejiang/China |
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Product Specification
| Payment Terms | L/C,D/A,D/P,T/T,MoneyGram,Western Union | Supply Ability | 60000 Ton/Tons per Year |
| Delivery Time | 20-30days upon products | Packaging Details | In bundles or in wooden boxes. |
| Application | Hydraulic Cylinders | Outer diameter(round) | 30 - 325 mm |
| Thickness | 2 - 50 mm | Standard | ASTM,DIN,GB,JIS,API |
| Technique | Cold Drawn,Hot Rolled,Cold Rolled,ERW,Hot Rolled/Cold Drawn | Grade | ST52V E355 SAE1026 DIN2391 St52GB 20MnV |
| Section shape | Round,Rectangular | Length | 6M or as requirement,As customer's require,8m,5.8m,2.5-8m |
| Brand Name | TORICH | Model Number | Low Carbon Steel Tube |
| Certification | ISO9001 ISO 14001 TS16949 | Place of Origin | Zhejiang/China |
| High Light | ST52V Low Carbon DOM Steel Tube ，Cold Drawn ERW Tube ，Hydraulic Cylinders Precision Steel Tube | ||
ST52V DOM tube is a cold drawn, electric resistance welded (ERW) low carbon structural steel tube. Through the DOM (Drawn Over Mandrel) process, the tube achieves refined grain structure, uniform wall thickness, and improved mechanical properties. It is specifically engineered for applications requiring high dimensional accuracy, smooth internal surface, and stable performance, such as hydraulic and pneumatic cylinders.
Manufacturing Process: ERW + DOM (Cold Drawn Over Mandrel)
Shape: Round
Surface Condition: Cold drawn, phosphated or oiled (optional)
Delivery Condition: +SR / +A (according to standard requirements)
Outer Diameter Range: Typically 20 mm – 350 mm
Wall Thickness Range: Typically 2 mm – 40 mm
Length: Random length or fixed length as required
Excellent dimensional precision and concentricity
Smooth inner surface suitable for honing and skiving
Stable mechanical properties along the tube length
Good weld integrity with no visible weld seam after drawing
Suitable for further machining and surface finishing
Customers sourcing DOM tubes for hydraulic cylinders usually focus on quality consistency, surface finish, mechanical reliability, delivery stability, and compliance with standards. We address these concerns as follows:
Consistent Inner Surface Quality
The DOM process eliminates weld seam irregularities, ensuring a uniform bore that reduces honing time and tool wear.
Reliable Mechanical Performance
Controlled cold drawing improves strength and toughness, minimizing deformation risks under high hydraulic pressure.
Strict Dimensional Tolerance Control
Tight OD and ID tolerances ensure easy assembly and excellent sealing performance in cylinder systems.
Stable Supply and Batch Traceability
Each production batch is traceable, ensuring repeatable quality for long-term projects and serial production.
Customization Capability
Heat treatment condition, length, surface protection, and packaging can be tailored to specific hydraulic cylinder requirements.
| Grade | C | Mn | Si | P | S |
|---|---|---|---|---|---|
| ST52V | ≤0.22 | 1.20–1.60 | ≤0.55 | ≤0.025 | ≤0.025 |
| E355 | ≤0.22 | ≤1.60 | ≤0.55 | ≤0.025 | ≤0.025 |
| SAE 1026 | 0.22–0.28 | 0.60–0.90 | ≤0.35 | ≤0.040 | ≤0.050 |
| DIN 2391 St 52 | ≤0.22 | ≤1.60 | ≤0.55 | ≤0.025 | ≤0.025 |
| GB 20MnV | ≤0.24 | 1.20–1.60 | ≤0.55 | ≤0.030 | ≤0.030 |
| Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) |
|---|---|---|---|
| ST52V | ≥355 | 490–630 | ≥22 |
| E355 | ≥355 | 490–630 | ≥22 |
| SAE 1026 | ≥350 | 490–620 | ≥20 |
| DIN 2391 St 52 | ≥355 | 490–630 | ≥22 |
| GB 20MnV | ≥355 | 500–640 | ≥20 |
ASTM: ASTM A513 (Type 5 DOM)
EN: EN 10297-1 E355
DIN: DIN 2391 St 52
JIS: JIS G4051 (comparable grades)
GB: GB/T 3639
General Application Fields:
Hydraulic systems, mechanical engineering, automotive components, heavy equipment, and precision machinery.
Specific Uses in Hydraulic Systems:
Hydraulic cylinder barrels
Pneumatic cylinder tubes
Telescopic cylinders
Precision mechanical sleeves
Machined structural components
A: manufacturer,also can do trading.
A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock,
it is according to quantity.
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact with me.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer,Exporter,Trading Company,Seller
Year Established:
1997
Total Annual:
25000000-30000000
Employee Number:
100~200
Ecer Certification：
Verified Supplier
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