Your Professional Stainless Steel Capillary Tube Supplier
ALLOK (Jiaxing) Metal Materials Co.,Ltd. was built in 2018, it owns two production bases in Jiaxing city and Yancheng city, equipped with precision cold rolling machines, cold drawing machines, bright annealing furnace, ultrasonic cleaning tank, passivation tanks, multi-line electropolishing devices, ultrapure water preparation machine, dryer, clean room, eddy current testing detector, ultrasonic flaw detector and other equipment, focusing on the production of stainless steel tubes, stainless steel pipes and nickel alloy tubes. for non-standard products that need to be customized, we have the ability to sample and mass produce for customers in a relatively short period of time.
Why Choose Us
Rich Products
Our company can produce stainless steel tubes, nickel alloy tubes, electrolytic polished tubes, bright annealed tubes, stainless steel coils, stainless steel capillary tubes, alloy tubes, etc.
Products Widely Used
The products produced by our company can be widely used in the biopharmaceutical industry, fine chemical industry, semiconductor industry, instrumentation industry, gas engineering industry and aerospace industry.
Advanced Production Equipment
Our company has advanced production equipment, such as precision cold rolling mills, cold drawing machines, bright annealing furnaces, ultrasonic cleaning tanks, passivation tanks, multi-line electrolytic polishing devices, etc.
Quality Guaranteed
All products we produce have ISO9001:2015 certificates, and all products are strictly tested in accordance with industry standards and contract agreements before leaving the factory. MTC is provided, and third-party testing certificates can be provided when necessary.
Advantages of Stainless Steel Capillary Tube
Corrosion Resistance
Stainless steel exhibits exceptional resistance to corrosion, ensuring longevity and reliability in corrosive environments encountered in various industries.
01
High Strength
Despite their small size, stainless steel capillary tubes offer high strength and durability, capable of withstanding high pressures and mechanical stresses.
02
Versatility
Stainless steel capillary tubes are compatible with various fluids, gases, and chemicals, making them suitable for diverse industry applications.
03
Temperature Resistance
Stainless steel maintains its mechanical properties over a wide temperature range, making it suitable for applications involving extreme temperatures.
04
Hygienic Properties
In medical and food processing applications, stainless steel’s hygienic properties, such as ease of sterilization and resistance to bacterial growth, are highly advantageous.
05
Specification
|
Form |
Seamless/Welded |
|
Application |
Medical treatment, petroleum, aerospace and defense, medical equipment, air conditioning, chemical industry, precision electronics, accessories, food machinery, power generation, pharmaceutical and other precision fields |
|
Outer Diameter (mm) |
0.1-8mm or according to customer’s requirement |
|
Wall Thickness (mm) |
0.015-1.0mm or according to customer’s requirement |
|
Length |
1000mm, 2440mm, 3050mm, 5800mm, 6000mm, 6100mm or as customer request |
|
Standard |
ASTM, ASME, EN, JIS, DIN, GB/T, etc |
|
Process Method |
Cold Drawn or Cold Rolled |
Processing Technology Of Precision Stainless Steel Capillary Tube
Our comprehensive CNC machining services include design, prototyping, and full-scale production. With a focus on manufacturing top-notch stainless steel capillary tubes, we use our vast experience and technical expertise to provide you with the best solution for your unique requirements.
Swiss CNC Machining
Swiss machining is renowned for its ability to create parts with extremely tight tolerances. This is crucial for capillary tubes, which often require precise internal and external diameters.
External Grinding
Capillary stainless steel tubes undergo external grinding to guarantee consistent diameter and absolute straightness for each tube.
Quality Inspection
Quality inspection involves checking dimensional accuracy, surface finish, and material properties of stainless steel capillary tubes.

Stainless Steel Capillary Tubes Sizes & Tolerance
|
Production name |
OD/mm |
OD tolerance/mm |
W.T/mm |
W.T tolerance/mm |
|
|
Capillary tube |
0.8-2.0 |
+-0.02 |
0.08 |
+-0.01 |
|
|
2.0-6.0 |
+-0.02 |
0.1-0.5 |
+-0.02 |
||
|
6.0-10.0 |
+-0.03 |
0.5-1.5 |
+-0.02 |
||
|
Super capillary tube |
<0.8 |
+-0.02/or samler |
0.02-0.08 |
+-0.01/or smaller |
Key Applications For Stainless Steel Capillary Tube
Analytical Chemistry
Gas Chromatography, Stainless steel capillary tubes are a critical component in gas chromatography systems, which are used to separate and analyze compounds. The tubes need to have extremely smooth inner bores and tight dimensional tolerances to precisely control gas flow rates for accurate sample analysis. Common sizes range from 0.1mm to 0.53mm inner diameter.
Medical Devices
In medical applications like insulin pens, stainless steel capillary tubing handles and delivers very small volumes of fluids. The tubes must resist corrosion and have a non-reactive inert surface for drugs and solutions. Precision tolerances and reliable performance are essential.
Refrigeration Systems
Capillary tubes regulate the flow of refrigerants in refrigerator and HVAC heat exchangers. They are designed to withstand high pressure fluctuations and flow rates. Controlled inner diameter tolerances are critical for proper refrigerant metering.
Analytical Instrumentation
Spectrophotometers, mass spectrometers and other lab equipment often use capillary tubing to move samples and reagents. The tubes need to avoid contamination of the sample and provide dimensional consistency.
Flow Restrictors
The small diameter of capillary tubes provides a fixed resistance to laminar fluid flow in devices like chromatography systems, infusion pumps, and more. This allows a constant, regulated flow rate.
Fuel Cells
Even gas and liquid distribution across fuel cell membranes is enabled by the capillary tube network. Stainless steel offers the needed durability and corrosion resistance for fuel cell reactants.
FAQ
We're well-known as one of the leading stainless steel capillary tube manufacturers and suppliers in China. Please feel free to wholesale custom made stainless steel capillary tube at competitive price from our factory.
Inconel Pipe

