Cold Drawn Alloy Steel Tube
OEM-Grade Seamless Precision Tubing Manufacturer for Global Industrial Supply.
Product Overview
Cold Drawn Alloy Steel Tubes are precision-engineered seamless steel tubes manufactured through controlled multi-pass cold drawing and heat treatment processes applied to hot-rolled seamless tubes.
This product is designed for OEM manufacturers and industrial distributors requiring:
•High dimensional accuracy
•Stable mechanical performance
•Batch-to-batch consistency
•Long-term supply reliability
Our tubes are widely used in hydraulic systems, automotive components, construction machinery, and high-load mechanical structures.
Manufacturing Capability & Company Profile
We are a dedicated manufacturer of cold drawn alloy steel tubes with stable industrial-scale production capability.
Production Capacity (Reference Scale)
•Annual production capacity: [XX,000 – XX,000 tons/year] (customize with real data)
•Multiple cold drawing production lines
•Precision heat treatment furnaces
•Continuous in-process inspection system
Export Experience
Our products are supplied to industrial customers in:
•Europe (Germany, Italy, Poland)
•North America (USA, Canada)
•South America
•Southeast Asia
•Middle East
OEM Supply Experience
We serve:
•Hydraulic cylinder manufacturers
•Automotive component suppliers
•Industrial machinery OEMs
•Steel distributors
Engineering Principle of Cold Drawing
Cold drawing is performed at room temperature by pulling seamless steel tubes through precision dies under controlled reduction ratios.
This process results in:
Refined grain structure and improved metallurgical uniformity.
Increased dislocation density (work hardening effect).
Enhanced yield strength and fatigue resistance.
Improved dimensional stability and concentricity.
Dimensional Tolerance & Process Control
Our production system is designed for precision engineering applications:
•Outer diameter tolerance: ±0.05 mm to ±0.1 mm.
•Wall thickness tolerance: ±5%.
•Straightness: ≤ 1.0 mm/m (customizable).
•High concentricity suitable for hydraulic and machining applications.
Process Control System:
•Controlled reduction ratio per drawing pass.
•Intermediate annealing to stabilize microstructure.
•Final heat treatment for mechanical property control.
Mechanical Properties
Mechanical properties are controlled through alloy composition, deformation ratio, and heat treatment parameters.
|
Property |
Typical Range |
|
Tensile Strength |
850 – 1100 MPa |
|
Yield Strength |
≥ 650 MPa |
|
Elongation |
≥ 12% |
|
Hardness |
28 – 32 HRC (after heat treatment) |
Surface Quality
Surface roughness: Ra 0.4 – 1.6 μm
No oxide scale or decarburization
Suitable for direct machining or sealing applications
Bright / pickled & oiled finish available
International Standards Compliance
Manufactured in accordance with global engineering standards:
ASTM A519 (USA)
EN 10297-1 (EU)
DIN 2391 (Germany)
JIS G3445 (Japan)
We also support OEM-specific technical drawings and inspection requirements.
Quality Assurance System
Raw Material Control
•Spectrometric chemical composition analysis
•Certified steel mill sourcing system
•Incoming inspection before production release
In-Process Control
•Dimensional inspection at every drawing stage
•Reduction ratio and deformation monitoring
•Heat treatment process validation
Final Inspection
•100% Heat Number traceability
•Mechanical testing per production batch
•Non-destructive testing (UT / Eddy Current available)
Documentation Package
Each shipment includes:
•Mill Test Certificate (EN 10204 3.1)
•Full chemical composition report
•Mechanical property report
•Traceability record by Heat Number
Optional:
•Third-party inspection (SGS / Bureau Veritas)
Quality & Risk Management System
We operate a structured industrial risk control system to support long-term OEM cooperation:
Batch-to-batch consistency control system.
Pre-shipment inspection and approval process.
Controlled deviation management system.
Claim handling and technical review procedure.
Long-term supply agreement support.
Supply Chain Reliability
We understand industrial customers require stable and predictable delivery performance.
Therefore we provide:
Stable production scheduling system.
Flexible MOQ for trial orders.
Long-term contract pricing support.
Fast delivery for standard specifications.
Export-ready packaging and logistics control.
Applications
Cold drawn alloy steel tubes are widely used in:
Hydraulic cylinder systems.
Automotive drive shafts and transmission components.
Construction machinery.
Industrial automation systems.
High-load mechanical structures.
Precision machining components.
OEM & Wholesale Supply Capability
We support global industrial procurement including distributors and OEM manufacturers.
Stable bulk production capability.
Custom manufacturing based on technical drawings.
Flexible MOQ for pilot orders.
Long-term supply agreements available.
Engineering support for specification matching.
Why Choose Us
OEM-grade industrial manufacturing system.
Full compliance with international engineering standards.
Strong batch consistency control system.
Audit-ready quality documentation.
Stable long-term supply capability.
Experience serving global industrial markets.
FAQ
Q: How do you ensure batch consistency?
A: We control batch consistency through standardized reduction ratios, heat treatment parameters, and full heat number traceability for every production lot.
Q: Do you support factory audits?
A: Yes. We support customer factory audits and third-party inspections (SGS, BV, or customer-appointed agencies).
Q: Can you provide OEM production based on drawings?
A: Yes. We manufacture according to customer technical drawings, including dimensions, material grades, and heat treatment requirements.
Q: Do you provide quality guarantees?
A: Yes. We operate a structured claim handling process including technical review, inspection verification, and replacement/compensation based on contract terms.
Q: What is your production capacity?
A: Our annual production capacity is approximately [XX,000 tons/year], supporting both OEM and wholesale supply chains.
Q: Which industries do you mainly serve?
A: We supply hydraulic equipment manufacturers, automotive component suppliers, industrial machinery OEMs, and global steel distributors.
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