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Product Description
This solid stainless steel round bar is designed for applications that require high hardness, strength, and reliable machining performance. Manufactured using advanced rolling and grinding processes, the rod provides stable dimensional accuracy and smooth surface quality, making it suitable for precision processing. Stainless steel material offers excellent corrosion resistance and mechanical stability for long-term industrial use.
In addition, the round bar supports customized processing services, including cutting, grinding, rolling, and machining, which helps meet different engineering and production requirements. Therefore, it is widely used in shafts, precision components, mechanical parts, industrial equipment, and structural assemblies. Multiple diameters, surface finishes, and hardness options are available. Stable wholesale supply, strict quality control, and export-grade packaging ensure consistent quality and reliable delivery for global customers.
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Product Packaging
Standard wooden box packaging

Standard wooden box packaging

Standard wooden box packaging
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Comment & FAQ
1. who are we?
We are based in Jiangsu, China, start from 2021,sell to South Asia(40.00%),South America(30.00%),Africa(20.00%),Mid East(10.00%). There are total about 11-50 people in our office.
2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
3.what can you buy from us?
Stainless Steel Pipe,stainless steel plate,galvanized sheet,color coated coil,Steel Round Bars
4. why should you buy from us not from other suppliers?
we are steel manufacturer and also owning a trading company, we focu ourself in the steel local and overseas marketing sales. Strengthened itself by Integrated producing, storage and logistic all together
5. what services can we provide?
Accepted Delivery Terms: FOB,CFR,CIF,EXW;
Accepted Payment Currency:USD,CNY;
Accepted Payment Type: T/T,L/C,PayPal;
Language Spoken:English,Chinese
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Company Profile
Haihong (Jiangsu) Steel International Trading Co., Ltd. is a comprehensive enterprise integrating production and foreign trade, with a deep commitment to the metal products industry. The company occupies a modern production base of approximately 1,000 mu and has a professional workforce of over 500 employees. Supported by its strong production capabilities and professional service team, the company specializes in a diverse range of metal products, including stainless steel plates, color-coated steel coils, aluminum plates, stainless steel pipes, stainless steel profiles, etc.
Upholding the principle of "customer first", the company provides personalized customization services. From product design to production and delivery, every step is strictly monitored to ensure the creation of high-quality products that meet the specific requirements of global customers. With its excellent product quality and good business reputation, the company has continuously expanded its business scope and won wide recognition and trust from customers at home and abroad. In the future, Haihong Steel will continue to forge ahead, drive development through innovation, and inject new vitality into the global metal products market.
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Production Process
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Certifications
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Data Sheet
product | 301 301L 316L 430 904L 304 304 Value Flat bar 304 Stainless Steel bar |
Standard | ASTM A479,ASTM A276,ASTM A484, ASTM A582, ASME SA276, ASME SA484, GB/T1220, GB4226, etc. |
Material | 301, 304, 304L, 309S, 321, 316, 316L, 317, 317L, 310S, 201,202 321, 329, 347, 347H 201, 202, 410, 420, 430, S20100, S20200, S30100, S30400, S30403, S30908, S31008, S31600, S31635, etc. |
Specifications | Round bar | Diameter:0.1~500mm |
Angle bar | Size:0.5mm*4mm*4mm~20mm*400mm*400mm |
Flat bar | Thickness | 0.3~200mm |
Width | 1~2500mm |
Square bar | Size: 1mm*1mm~800mm*800mm
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Length | 2m, 5.8m, 6m, or as required. |
Surface | Black, peeled, polishing, bright, sand blast, hair line, etc. |
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Optional Surface

General polishing

Bright finish

Matte polishing
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Testing Quality
Stainless Steel Bar Quality Inspection and Testing Process
Stainless steel bar quality inspection is a critical process to ensure product reliability, safety, and long-term performance. High-quality stainless steel bars, including round bars, square bars, and hexagonal bars, must undergo strict inspection and testing procedures before delivery to meet international standards and customer requirements.
1. Visual Inspection of Stainless Steel Bars
Visual inspection is the first step in stainless steel bar quality control. The surface of stainless steel bars is carefully examined to ensure there are no visible defects, such as:
Cracks, folds, or scratches
Surface pits or pores
Uneven surfaces or damaged ends
This inspection helps ensure good surface quality and smooth processing performance.
2. Chemical Composition Analysis
Chemical composition testing is essential to confirm material grade and corrosion resistance. Using spectrometer analysis, the following elements are strictly controlled:
Chromium (Cr)
Nickel (Ni)
Carbon (C)
Molybdenum (Mo)
This process ensures stainless steel bars comply with international standards such as ASTM, AISI, DIN, and EN.
3. Mechanical Properties Testing
Mechanical testing verifies the strength and durability of stainless steel bars. Key tests include:
Tensile strength test
Yield strength test
Elongation test
Hardness test
These tests ensure stainless steel bars perform reliably in machining, structural, and industrial applications.
4. Dimensional and Tolerance Inspection
Precision measurement tools such as calipers and micrometers are used to inspect:
Accurate dimensional inspection ensures stainless steel bars meet customer specifications and machining requirements.
5. Non-Destructive Testing (NDT)
To detect internal defects, non-destructive testing may be performed, including:
NDT improves product reliability by identifying internal cracks or inclusions without damaging the material.
6. Importance of Stainless Steel Bar Quality Inspection
Strict stainless steel bar inspection and testing:
Ensures consistent product quality
Reduces application risks
Extends service life
Enhances customer confidence and brand reputation
It is especially important for stainless steel bars used in aerospace, automotive, construction, energy, and precision engineering industries.