25CrMo4 Cold Drawn Seamless Alloy Steel Precision Tube
1. Product Overview
25CrMo4 tube is a high-strength, low-alloy structural steel tube, manufactured through cold drawing for tight dimensional accuracy and superior surface finish. This precision steel tube offers:
It is ideal for high-load and high-pressure applications, widely used in:
We offer customized 25CrMo4 alloy tube solutions to meet the specific needs of global clients.
2. Product Name
25CrMo4 Cold Drawn Seamless Alloy Steel Precision Tube
3. Size Range
Outer Diameter (OD): 60mm – 325mm
Wall Thickness: Up to 50mm
Inner Diameter (ID): Up to 300mm
✅ Customized dimensions are available upon request.
4. Steel Grades & Standards
We support multiple global standards and steel grades:
EN 10305-1:
E195, E235, E355, C35E, C45E, E410, E470, S355J2, 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/B/C
GB/T:
Q345B/C/D/E, 20#, 45#, 25Mn, 30CrMo, 35CrMo, 42CrMo, 20CrMo, 25CrMo
5. Manufacturing Method
Hydraulic Cold Drawing
6. Delivery Condition
Our tubes are available in multiple heat treatment conditions:
Symbol | Treatment Type |
|---|
BK | +C (Cold finished, hard) |
BKW | +LC (Cold finished, soft) |
BKS | +SR (Stress relieved) |
GBK | +A (Annealed) |
NBK | +N (Normalized) |
7. End Finish
Standard: Plain ends, square cut, burr-free
Optional: Beveled ends available on request
8. Marking & Packaging
Standard export packaging:
Steel strip bundles with oil-coated interior & exterior
External Protection:
PVC wrapping or woven bags
Custom Marking:
Available with logo, barcode, and export documents upon request
Key Features
✅ High strength & toughness under dynamic load
✅ Precise OD/ID tolerance (cold drawn)
✅ Excellent machinability & weldability
✅ Smooth finish for hydraulic and precision fitting
✅ Compatible with multiple international standards
✅ Custom heat treatment & mechanical properties
Applications
25CrMo4 precision tubes are ideal for:
Hydraulic cylinder components
Automotive transmission shafts
Drivetrain and suspension systems
High-pressure piping systems
Engineering and construction machinery
Aerospace and energy components (with further processing)
FAQs
Q1: What is the MOQ for tube 25CrMo4?
A: 1 ton per size. MOQ may vary for special grades or dimensions.
Q2: What’s your delivery lead time?
A: Usually 20–35 days depending on raw material and quantity.
Q3: Can you support custom sizes and mechanical properties?
A: Yes, all specs can be customized to project needs.
Q4: What payment methods do you accept?
A: T/T, L/C, D/P based on customer profile and region.
Q5: How do you ensure product quality?
A: 90% of tubes are sourced from high-quality hot rolled seamless pipes. Full-stage quality control is implemented.
Company Profile: CZ Chengxin
CZ Chengxin is a trusted manufacturer of precision cold drawn seamless tubes, focusing on 25CrMo4, 34CrMo4, and 42CrMo4 alloy steels.
Since 2002, we have served clients globally with:
Advanced cold drawing & annealing lines
Full heat treatment, NDT, OD polishing & CNC turning
Honing & skiving/roller burnishing for hydraulic cylinders
Full material traceability and ISO-certified quality system
Markets served: Europe, Asia, South America, Middle East
