About Us
Eastern Steel Manufacturing Co.,Ltd is a leading manufacturer and distributor of seamless steel pipe, welded steel pipe, OCTG products and fittings. We supply first-step processing, semi-finished parts and finished parts to help our clients meet fabrication requirements beyond their capacity or to improve operations by moving forward the pre-production processing.
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In this column you can find the steel pipe related articles you need, including industry trends, product standards and materials, and some technical guidelines.
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Eastern Steel Manufacturing Co.,Ltd not only improve product production and sales services, but also provide additional value-added services. As long as you need, we can complete your specific needs together.
Facility
Eastern Steel Manufacturing Co.,Ltd not only improve product production and sales services, but also provide additional value-added services. As long as you need, we can complete your specific needs together.
Projects
Many years of large-scale project experience in various fields（Oil & Gas, Construction, Power Energy, Marine & Offshore, Water Treatment, Exploration & Drilling Services, Pipeline & Petrochemical etc.）, professional project team is responsible from receiving until the end of the project.
Stainless steel precision tubes and ordinary stainless steel tubes differ significantly in dimensional accuracy, surface quality, manufacturing process, material properties, application areas, and cost. The differences are as follows:
Dimensional accuracy is higher, with tolerances for wall thickness and diameter typically within ±0.05mm, and even higher accuracy can be achieved.
This high precision can meet the strict requirements of precision instruments and equipment on the size of stainless steel precision tubes, ensuring the accuracy of installation and use.
Dimensional accuracy is relatively low, with tolerances generally exceeding ±0.1mm.
This dimensional accuracy generally meets the requirements of general industrial applications, but may not be suitable for applications requiring higher precision.
|
Item |
Stainless steel precision tube |
Ordinary stainless steel tube |
|
Dimensional tolerance (OD) |
±0.02 ~ ±0.05 mm |
±0.10 ~ ±0.30 mm |
|
Dimensional tolerance (WT) |
±0.02 mm |
±0.10 mm or more |
|
Roundness deviation |
≤0.05 mm |
≤0.30 mm |
The surface is highly smooth, with no obvious scratches or dents. The tube body is free of scratches or dents. The wall thickness is uniform and smooth, the tube ends are intact and burr-free, the inner wall is flat, and there are no weld holes or pinholes at the weld seams. The surface glossiness is above 200 grit.
This excellent surface quality is suitable for applications requiring stringent surface quality, such as optics and electronics.
The surface may have defects such as scratches and dents, and is relatively rough when shipped from the factory. Secondary surface treatment is usually required to meet the requirements of certain applications requiring high surface quality.
It is typically manufactured using cold drawing or cold rolling, which ensures high standards of roughness on both the inner and outer surfaces while maintaining strict tolerances on wall thickness and diameter.
During the production process, it also undergoes multiple mechanical property tests, such as hardness, bendability, and compressive strength, to ensure product quality.
It is typically hot-rolled and then subjected to simple cold working. This results in relatively low dimensional accuracy, greater inner and outer surface roughness, a relatively simple production process, and lower performance testing requirements.
Higher-grade stainless steel alloys, such as 304L and 316L, may be used. These materials offer improved corrosion resistance, high temperature resistance, and mechanical properties, making them suitable for harsher operating environments.
Common stainless steel grades such as 304 and 316 may be used. While these grades offer certain corrosion resistance and mechanical properties, their performance may not be comparable to that of stainless steel precision tube in certain environments.
|
Item |
Stainless steel precision tube |
Ordinary Stainless steel tube |
|
Common materials |
304L, 316L, 321, 310S |
201, 304, 316 |
|
Tensile strength |
550 ~ 750 MPa |
500 ~ 700 MPa |
|
Elongation |
≥35% |
≥25% |
|
Pressure rating |
Up to 20 ~ 40 MPa |
Generally ≤ 16 MPa |
Commonly used in aerospace, medical equipment, precision instrumentation, hydraulic systems, and other fields requiring extremely high dimensional accuracy and surface finish.
For example, in the aerospace sector, stainless steel precision tube is used to manufacture key components in aircraft hydraulic and fuel systems. In the medical equipment sector, it is used to manufacture surgical instruments and medical device parts.
It is suitable for general industrial applications such as construction, furniture manufacturing, and kitchen and bathroom fixtures, where dimensional accuracy and surface quality are not particularly demanding.
For example, in the construction industry, ordinary stainless steel tube can be used to make stair railings and handrails; in furniture manufacturing, it can be used to make furniture frames.
Due to the complex production process, strict raw material requirements, and the need for multiple performance tests, the cost is relatively high, typically 30% to 80% higher than that of ordinary stainless steel tube.
The production process is relatively simple, resulting in lower production costs, making it suitable for large-scale production and use, and offering significant price advantages in the market.
When applications require high dimensional accuracy, sealing, or surface finish, stainless steel precision tube is essential, such as in medical devices, hydraulic systems, aerospace fuel lines, and semiconductor equipment.
Ordinary stainless steel tube can be used in less demanding applications (such as handrails, railings, and general fluid transport).
However, in high-pressure sealing, precision assembly, or highly corrosive environments, replacing precision tube with ordinary tubing can lead to leaks, poor assembly, or a shortened service life.
If the application environment is the same, stainless steel precision tube typically lasts 20% to 50% longer than ordinary stainless steel tube due to its fewer surface defects and more stable corrosion resistance.
In harsh operating conditions, stainless steel precision tube can effectively reduce premature failure.
Stainless steel precision tube prioritizes precision, performance, and surface quality, making it suitable for high-end industries and cutting-edge fields. Ordinary stainless steel tube, on the other hand, enjoys a wider market share due to its cost advantages and universal compatibility. The choice should be made based on the application environment, precision requirements, and budget.
E-mail: sales@eastern-steels.com
