China Stainless Steel Angle Bars Suppliers - ASTM 304, 304L, 316 Factory Sizes 1-4, 1.5mm to 25mm
Stainless Steel Angle
Stainless steel angle bars are L-sectioned stainless steel profiles, classified into equal-sided and unequal-sided variants, with mainstream grades including 201, 304, and corrosion-resistant 316L. Customizable surface treatments (pickling, 2B cold rolling, wire drawing) enable them to balance structural rigidity and visual appeal, positioning them as core load-bearing and framing components across diverse industries.
- 🛡️Corrosion Resistance: 304-grade handles humid environments; 316L resists acid-alkali corrosion for demanding conditions.
- 💪High Strength: Superior tensile strength and bending toughness to bear heavy loads without deformation.
- ✂️Easy Fabrication: Excellent ease of cutting and welding supports tailored, custom assembly.
- ✨Aesthetic Finishes: Multiple surface finishes merge utility with aesthetics for visible applications.
- ⏳Long Service Life: Service life vastly outperforms traditional carbon steel angle bars.
These bars serve broad applications: in construction, they act as curtain wall keels and railing supports; in machinery manufacturing, they form equipment frames and transmission component substrates; in the chemical sector, they fabricate pipeline supports and tank reinforcement; in municipal engineering, they fit street light bases and manhole cover frames; and in kitchen/bathroom fields, they are processed into hardware accessories, striking a perfect balance between functionality and durability.
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Installation Notice: Prior to installation, degreasing and rust removal pre-treatment is mandatory. Bolting is preferred for highly corrosive chemical settings to avoid weld corrosion; reinforcing shims are added to heavy-load zones; post-welding passivation ensures joint strength and corrosion resistance.
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Assembly Methods
Welding, bolting, and riveting — choose based on your specific scenario and environment requirements.
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Outdoor Installation
Reserve thermal expansion joints for outdoor setups to accommodate temperature-related dimensional changes.
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Strong Acid Conditions
Opt for 316L grade with anti-corrosion coatings; avoid direct carbon steel contact to prevent galvanic corrosion.
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Daily Maintenance
Wipe with neutral detergent, treat rust spots with specialized removers, inspect connections regularly, and store in moisture-proof, ventilated spaces.
Product Parameters
| Specifications | Unit Weight (kg/m) | Specifications | Unit Weight (kg/m) | Specifications | Unit Weight (kg/m) |
| KG | KG | KG | |||
| 20*20*3 | 0.89 | 63*63*8 | 7.47 | 110*110*7 | 11.9 |
| 20*20*4 | 1.15 | 63*63*10 | 9.15 | 110*110*8 | 13.5 |
| 25*25*3 | 1.12 | 70*70*4 | 4.37 | 110*110*10 | 16.7 |
| 25*25*4 | 1.46 | 70*70*5 | 5.4 | 110*110*12 | 19.8 |
| 30*30*3 | 1.37 | 70*70*6 | 6.41 | 110*110*14 | 22.8 |
| 30*30*4 | 1.79 | 70*70*7 | 7.4 | 125*125*8 | 15.5 |
| 36*36*3 | 1.66 | 70*70*8 | 8.37 | 125*125*10 | 19.1 |
| 36*36*4 | 2.16 | 75*75*5 | 5.82 | 125*125*12 | 22.7 |
| 36*36*5 | 2.65 | 75*75*6 | 6.91 | 125*125*14 | 26.2 |
| 40*40*3 | 1.85 | 75*75*7 | 7.98 | 125*125*16 | 29.6 |
| 40*40*4 | 2.42 | 75*75*8 | 9.03 | 140*140*10 | 21.5 |
| 40*40*5 | 2.98 | 75*75*9 | 10.1 | 140*140*12 | 25.5 |
| 45*45*3 | 2.09 | 75*75*10 | 11.1 | 140*140*14 | 29.5 |
| 45*45*4 | 2.74 | 80*80*5 | 6.21 | 140*140*16 | 33.4 |
| 45*45*5 | 3.37 | 80*80*6 | 7.38 | 150*150*8 | 18.6 |
| 45*45*6 | 3.99 | 80*80*7 | 8.53 | 150*150*10 | 23.1 |
| 50*50*3 | 2.33 | 80*80*8 | 9.66 | 150*150*12 | 27.4 |
| 50*50*4 | 3.06 | 80*80*9 | 10.8 | 150*150*14 | 31.7 |
| 50*50*5 | 3.77 | 80*80*10 | 11.9 | 150*150*15 | 33.8 |
| 50*50*6 | 4.46 | 90*90*6 | 8.35 | 150*150*16 | 35.9 |
| 56*56*3 | 2.62 | 90*90*7 | 9.66 | 160*160*10 | 24.7 |
| 56*56*4 | 3.45 | 90*90*8 | 10.9 | 160*160*12 | 29.4 |
| 56*56*5 | 4.25 | 90*90*9 | 12.2 | 160*160*14 | 34 |
| 56*56*6 | 5.04 | 90*90*10 | 13.5 | 160*160*16 | 38.5 |
| 56*56*7 | 5.81 | 90*90*12 | 15.9 | 180*180*12 | 33.2 |
| 56*56*8 | 6.57 | 100*100*6 | 9.37 | 180*180*14 | 38.4 |
| 60*60*5 | 4.58 | 100*100*7 | 10.8 | 180*180*16 | 43.5 |
| 60*60*6 | 5.43 | 100*100*8 | 12.3 | 180*180*18 | 48.6 |
| 60*60*7 | 6.26 | 100*100*9 | 13.7 | 200*200*14 | 42.9 |
| 60*60*8 | 7.08 | 100*100*10 | 15.1 | 200*200*16 | 48.7 |
| 63*63*4 | 3.91 | 100*100*12 | 17.9 | 200*200*18 | 54.4 |
| 63*63*5 | 4.82 | 100*100*14 | 20.6 | 200*200*20 | 60.3 |
Packing And Shipping
Frequently Asked Questions
Q1
What is the difference between 304 and 316L stainless steel angle bars?
304-grade stainless steel angle bars are suitable for routine humid and mildly corrosive environments, offering a good balance of cost and performance. 316L grade contains added molybdenum, providing significantly enhanced resistance to acid, alkali, and chloride corrosion, making it the preferred choice for chemical processing, marine, and strong acid environments.
Q2
What surface finishes are available for stainless steel angle bars?
Stainless steel angle bars can be supplied with multiple surface finishes, including pickling (mill finish), 2B cold-rolled finish, and wire drawing (brushed) finish. Each treatment balances functional performance with visual appearance, allowing selection based on the specific application requirements.
Q3
Which assembly method is best for stainless steel angle bars in corrosive environments?
For highly corrosive chemical environments, bolting is the preferred assembly method, as welding can create heat-affected zones that are more susceptible to corrosion. If welding is necessary, post-weld passivation treatment is essential to restore corrosion resistance at the joint area.
Q4
How should stainless steel angle bars be maintained during regular use?
Daily maintenance is straightforward: clean surfaces with a neutral detergent and soft cloth, treat any rust spots promptly with specialized stainless steel rust removers followed by passivation treatment, inspect connection points regularly for loosening or wear, and store unused bars in moisture-proof, well-ventilated spaces to prevent deformation or contamination.
Q5
Can stainless steel angle bars be used in contact with carbon steel components?
Direct contact between stainless steel angle bars and carbon steel components should be avoided. When dissimilar metals are in direct contact in the presence of moisture or electrolytes, galvanic corrosion can occur, accelerating the degradation of both materials. Insulating separators or coatings should be used where such contact is unavoidable.
Q6
What are the main application industries for stainless steel angle bars?
Stainless steel angle bars are widely used across multiple industries: construction (curtain wall keels, railing supports), machinery manufacturing (equipment frames, transmission substrates), chemical industry (pipeline supports, tank reinforcement), municipal engineering (street light bases, manhole cover frames), and kitchen/bathroom hardware fabrication. Their combination of structural strength, corrosion resistance, and aesthetic finish makes them versatile across all these sectors.