316 304 Cold Drawn Stainless Steel Capillary Tube with 0.02–1.00 mm Wall Thickness for Precision Applications
Basic Properties
Place of Origin:
ZheJiang,CHINA
Brand Name:
TORICH
Certification:
ISO9001, ISO14001, TS16949
Model Number:
310S
Trading Properties
Minimum Order Quantity:
1 Tons
Price:
800-1000 USD/Tons
Payment Terms:
L/C,D/A,D/P,Western Union,MoneyGram
Supply Ability:
60000 Tons/Year
Product Summary
316 304 Needle Micro Stainless Steel Capillary Tube Cold Drawing Precision Cold-Drawn Capillary Tubing 316 and 304 needle micro stainless steel capillary tubes are precision cold-drawn tubes designed for applications requiring a small outside diameter, thin wall, smooth internal passage and ...
Product Details
Highlight:
316 Stainless Steel Capillary Tube
,Micro Stainless Steel Capillary Tube
,Cold Drawing SS Capillary Tube
Product:
Needle Micro Stainless Steel Capillary Tube
Material:
Austenitic Stainless Steel
Main Grades:
304, 304L, 316, 316L, 321
Manufacturing Route:
Seamless Cold Drawn Or Welded And Redrawn
Outside Diameter:
0.50–10.00 Mm
Wall Thickness:
0.02–1.00 Mm
Standard Length:
1–12 M, Customizable
Testing:
Dimensional Inspection, Eddy-current Testing, Hydrostatic Testing Or Air-underwater Testing
Product Description
316 304 Needle Micro Stainless Steel Capillary Tube Cold Drawing
Precision Cold-Drawn Capillary Tubing
316 and 304 needle micro stainless steel capillary tubes are precision cold-drawn tubes designed for applications requiring a small outside diameter, thin wall, smooth internal passage and controlled dimensional accuracy.
The tubing can be manufactured from seamless hollows or welded-and-redrawn feedstock. Multiple cold-drawing passes are used to reduce the diameter and wall thickness while improving concentricity and surface quality. Solution annealing, straightening, polishing, passivation and precision cutting can be performed according to the final application.
Standard production includes 304, 304L, 316, 316L and 321 austenitic stainless steels. For medical needle, instrumentation and fluid-control applications, 304 and 316L are the most frequently specified grades. The final material grade, dimensional tolerance, cleanliness level and inspection method should be stated on the purchase drawing.
Product Specifications
| Item | Available Specification |
|---|---|
| Product | Needle micro stainless steel capillary tube |
| Material | Austenitic stainless steel |
| Main Grades | 304, 304L, 316, 316L, 321 |
| UNS Designations | S30400, S30403, S31600, S31603, S32100 |
| Manufacturing Route | Seamless cold drawn or welded and redrawn |
| Outside Diameter | 0.50-10.00 mm |
| Wall Thickness | 0.02-1.00 mm |
| Standard Length | 1-12 m, customizable |
| Precision Cut Length | Custom short lengths available |
| Standard OD Tolerance | Typically ±0.05 mm |
| Precision OD Tolerance | Down to ±0.01 mm for selected diameter ranges |
| Wall Thickness Tolerance | Typically ±0.02 mm or according to drawing |
| Cut-Length Tolerance | Typically ±0.50 mm; tighter tolerances by agreement |
| Straightness | Typically ≤1.0 mm per 1000 mm |
| Ovality | Controlled within the agreed OD tolerance |
| Surface Condition | Bright annealed, pickled, polished, ground or passivated |
| Internal Surface | Cold-drawn finish or specified polished finish |
| Heat Treatment | Solution annealed and rapidly cooled |
| Delivery Condition | Soft annealed, semi-hard or hard-drawn |
| End Condition | Straight cut, deburred, chamfered, pointed or application-specific |
| Testing | Dimensional inspection, eddy-current testing, hydrostatic testing or air-underwater testing |
| Documentation | EN 10204 3.1 inspection certificate available |
The quoted tolerances are manufacturing capability ranges rather than universal values for every combination of diameter and wall thickness. Final tolerances should be confirmed after reviewing the tube size, length, material condition and inspection method.
Key Characteristics
- Controlled Micro Dimensions: Cold drawing permits progressive reduction of tube dimensions with precision tolerances
- Improved Bore Concentricity: Enhanced relationship between outside diameter and internal bore for consistent performance
- Smooth Internal Passage: Continuous internal passage without scale, with optional cleaning and polishing
- Thin-Wall Capability: Wall thicknesses down to 0.02 mm for selected micro-diameter products
- Corrosion-Resistant Structure: Austenitic stainless steel grades providing excellent corrosion resistance
- Cold-Worked Strength Options: Available in solution annealed or cold worked conditions for different applications
Manufacturing Process
The typical production route consists of:
- Tube hollow or welded mother tube preparation
- Cold drawing through precision dies
- Intermediate degreasing and annealing when required
- Repeated diameter and wall reduction
- Final solution annealing or controlled hard drawing
- Straightening and precision sizing
- Surface cleaning, polishing or passivation
- Precision cutting and end preparation
- Dimensional and nondestructive inspection
- Final cleaning and protective packaging
Quality Assurance
Our comprehensive inspection process includes:
- Chemical composition verification
- Tensile and hardness testing where applicable
- Comprehensive dimensional measurements
- Surface quality assessment
- Nondestructive testing methods
- Cleanliness inspection
- Positive material identification
Technical Data
Chemical Composition
| Grade | UNS | C Max. | Mn Max. | Si Max. | P Max. | S Max. | Cr | Ni | Mo | N Max. | Other |
|---|---|---|---|---|---|---|---|---|---|---|---|
| TP304 | S30400 | 0.080 | 2.00 | 1.00 | 0.045 | 0.030 | 18.0-20.0 | 8.0-11.0 | -- | 0.10 | -- |
| TP304L | S30403 | 0.035 | 2.00 | 1.00 | 0.045 | 0.030 | 18.0-20.0 | 8.0-12.0 | -- | 0.10 | -- |
| TP316 | S31600 | 0.080 | 2.00 | 1.00 | 0.045 | 0.030 | 16.0-18.0 | 10.0-14.0 | 2.00-3.00 | 0.10 | -- |
| TP316L | S31603 | 0.035 | 2.00 | 1.00 | 0.045 | 0.030 | 16.0-18.0 | 10.0-14.0 | 2.00-3.00 | 0.10 | -- |
| TP321 | S32100 | 0.080 | 2.00 | 1.00 | 0.045 | 0.030 | 17.0-19.0 | 9.0-12.0 | -- | 0.10 | Ti: minimum 5 × C, maximum 0.70 |
Mechanical Properties
| Grade | Tensile Strength Min. | 0.2% Yield Strength Min. | Elongation Min. | Maximum Hardness |
|---|---|---|---|---|
| TP304 | 515 MPa | 205 MPa | 35% | 90 HRB |
| TP304L | 485 MPa | 170 MPa | 35% | 90 HRB |
| TP316 | 515 MPa | 205 MPa | 35% | 90 HRB |
| TP316L | 485 MPa | 170 MPa | 35% | 90 HRB |
| TP321 | 515 MPa | 205 MPa | 35% | 90 HRB |
Frequently Asked Questions
Q: Are you trading company or manufacturer?
A: Manufacturer, also can do trading.
Q: How long is your delivery time?
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, according to quantity.
Q: Do you provide samples? Is it free or extra?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
Q: What is your terms of payment?
A: Payment ≤ 2000USD, 100% in advance. Payment ≥ 2000USD, 30% T/T in advance, balance before shipment. If you have another question, please feel free to contact with me.
Product Gallery
Related Products
-
Auto Parts ASTM A513 Cold Rolling Welded Steel Tubes with DOM Production
Auto Parts ASTM A513 Welded Steel Tubes with DOM production ASTM A513 Electric-Resistance-Welded Carbon and Alloy Steel Mechanical Tubing Applications: for Machinery, Mechanical Engineering 1. Standard: ASTM A513 cold rolling welded precision steel tubes 2. Steel Grade: SAE1010, SAE1020, other ... -
25mm Diameter Bright Annealing Seamless Steel Tube for Hydraulic Systems
EN10305-1 E235 E355 NBK Bright Annealing Precision Steel Pipes for Hydraulic Systems EN10305-1 NBK Bright Annealed Precision steel pipes for Hydraulic system OD:4-80 (mm) WT0.5-10 (mm) Length 1000-12000mm Product name: Seamless Precision Steel Pipe Application: for hydraulic systems precision steel ... -
Precision Seamless Black Phosphating Steel Tube for Hydraulic Systems
Steel Pipes with high precision for Hydraulic Systems with Black Phosphating surface Black Phosphated Hydraulic Tubes with High Precision and tight tolerance, the tubes are produced by precision cold drawn and cold rolling, then bright annealed in a protected atmosphere, afterwards it is blackphosph... -
Precision Seamless Galvanized Steel Tubes DIN2391 EN103052 ST35.0 ST37
Precision Seamless Galvanized Steel Tubes DIN2391 EN103052 ST35.0 ST37 Production Process: Cold rolling by Cold pilger machine and Cold rolling machine,galvanized and zinc plated could be applied. Cold Rolled and Galvanized Steel Tube Production process: DIN highly accurate, cold rolled and bright ...
