Product Introduction
Bright Round Steel Tubes are manufactured using cold drawing or cold rolling processes and undergo protective atmosphere bright annealing. They possess high dimensional accuracy, a smooth surface, and stable mechanical properties, making them suitable for high-precision machinery manufacturing.
Technical Specifications
|
Item |
Specification |
|
Product Name |
Bright Round Steel Tube |
|
Manufacturing Process |
Cold Drawn / Cold Rolled |
|
Delivery Condition |
+N / +NBK / +BK / +BKS / Customized |
|
Surface Finish |
Bright Annealed |
|
Outside Diameter |
6–168 mm |
|
Wall Thickness |
0.8–20 mm |
|
Length |
5.8 m / 6 m / 11.8 m / Customized |
|
Steel Grade |
E235, E355, ST35, ST52, SAE1020, SAE1045, 4130, 4140, 10#, 20#, 45#, Q355B, etc. |
|
Standard |
EN 10305-1, DIN 2391, ASTM A519, ASTM A513, JIS G3445, GB/T 3639 |
|
Tolerance |
According to Standard or Customized |
|
Straightness |
According to Standard |
|
Heat Treatment |
Bright Annealed / Annealed / Normalized |
|
End Finish |
Plain End / Beveled / Threaded |
|
Inspection |
Chemical, Mechanical, Dimension, NDT |
|
Certificate |
EN 10204 3.1, ISO 9001 |
Material Grades & Standards
ASTM: Supports steel grades such as SAE1010, 1020, 1045, 4130, and 4140, suitable for the machinery, hydraulics, and automotive industries.
EN: Supports steel grades such as E235, E355, and S355J2, widely used in hydraulic systems and precision machinery.
DIN: Supports steel grades such as ST35, ST45, and ST52, suitable for the manufacture of mechanical structural components.
JIS: Supports steel grades such as STKM11A, STKM13A, and STKM13C, suitable for automotive and precision equipment.
GB: Supports steel grades such as 10#, 20#, 45#, Q355B, 20Cr, and 40Cr, meeting the needs of general machinery manufacturing.
Manufacturing Process
Raw Material Inspection: Inspects chemical composition and dimensions to ensure raw materials meet standards.
Cold Forming: Employs cold drawing or cold rolling processes to improve dimensional accuracy and mechanical properties.
Bright Annealing
Protective atmosphere annealing eliminates stress and achieves a smooth, oxide-free surface.
Finishing and Inspection
Packaging and shipping after straightening, cutting, dimensional inspection, and non-destructive testing.
Surface Finish
Bright Annealed Surface
No oxide scale, uniform and smooth surface.
Low Roughness
Favorable for sealing fits and precision machining.
Burnt-Free
Smooth ends, improving assembly efficiency.
Clean Inner Walls
Suitable for hydraulic and fluid conveying systems.
Custom Manufacturing
Custom Sizes
Supports customization of outer diameter, wall thickness, length, and tolerances.
Custom Materials
Supports carbon steel, low-alloy steel, and alloy steel.
Surface Treatment
Supports bright finishing, oiling, rust prevention, and phosphating.
Further Processing
Supports cutting, chamfering, threading, grooving, and laser marking.
Packaging & Shipping
Export Packaging：Steel strapping, waterproof packaging, and plastic cap protection.
Rust Prevention Treatment：Provides packaging solutions such as oiling and rust-preventive film.
Customized Packaging: Supports wooden crates, pallets, and other specified packaging.
Safe Transportation: Optimized container loading solutions reduce transportation risks.
Why Choose Us?
1. Advanced Production Equipment
We operate multiple high-frequency welded (HFW) pipe production lines capable of manufacturing round, square, and rectangular steel pipes. We are also equipped with cold-roll forming units for producing custom-profile sections. Downstream processing capabilities include precision cutting-to-length, punching, straightening, and surface treatment systems.
2. Guaranteed Quality
We supply certified products that meet standards such as EN 10219, ASTM A500, and ISO 1461 to engineering contractors and end-users.
3. Comprehensive Standards and Documentation
We manufacture products in accordance with ASTM, EN, DIN, JIS, and GB standards. We provide MTCs and EN 10204 3.1 certificates, and support third-party inspections by agencies such as SGS, BV, and TÜV.
FAQ
Q: Which standards do you support?
A: We support production according to international standards such as ASTM, EN, DIN, JIS, and GB.
Q: Which steel grades can you produce?
A: We support carbon steel, low-alloy steel, and alloy steel, and can produce according to specified steel grades.
Q: Do you support OEM customization?
A: We support customization services such as dimensions, tolerances, materials, and deep processing.
Q: What quality documents can you provide?
A: We can provide EN 10204 3.1 material certificates, MTC, and related test reports.
Q: Do you support third-party inspection?
A: We support third-party inspection services such as SGS, BV, and TÜV.
Q: What is the minimum order quantity?
A: It depends on the product specifications. Sample and bulk purchases are supported.
Q: What is the delivery time?
A: Standard specifications can be shipped quickly. Customized products typically take 20–30 days.
Q: How do you guarantee that the product will not rust during transportation?
A: We offer oiling, rust-proof packaging, plastic caps, and waterproof packaging to meet long-term sea freight requirements.
Q: Does the product support full traceability?
A: Yes, it supports furnace number traceability. Raw material and testing records can be queried for each batch of products.
Q: Which are the main export markets?
A: Our products are widely exported to Europe, the Americas, the Middle East, Southeast Asia, and other international markets.
Hot Tags: bright round steel tube, China bright round steel tube manufacturers, suppliers, factory, Carbon Steel Pipe, Galvanized Round Steel Pipe, gi pipe round, Round carbon steel tubing, steel pipe round, steel tubing round
