Stainless Steel Angles - ASTM Certified Mill Direct Manufacturer

Hongji Profiles Co., Ltd.

Verified Custom manufacturer 5yrs

Technical Specifications of Stainless Steel Angles

Property	Parameter	Description
Product Name	Stainless Steel Angles	Hot-rolled or laser-fused equal/unequal leg angle bars
Material Grade	304/304L, 316/316L, 321, 310S	Equivalent to EN 1.4301/1.4307, 1.4401/1.4404, JIS SUS304/SUS316
Standard Compliance	ASTM A276/A484, EN 10056, GB/T 706	International structural and dimensional standards for stainless steel angles
Carbon (C)	≤ 0.08% (304), ≤ 0.03% (304L/316L)	Low carbon variants improve intergranular corrosion resistance
Chromium (Cr)	18.0–20.0% (304), 16.0–18.0% (316)	Primary element for corrosion resistance and passivation layer formation
Nickel (Ni)	8.0–10.5% (304), 10.0–14.0% (316)	Enhances ductility, toughness, and austenitic structure stability
Molybdenum (Mo)	2.0–3.0% (316/316L)	Improves pitting and crevice corrosion resistance in chloride environments
Tensile Strength	≥ 515 MPa (304), ≥ 485 MPa (316)	Per ASTM A276 minimum requirements
Yield Strength	≥ 205 MPa (304), ≥ 170 MPa (316)	0.2% offset yield strength per ASTM A276
Elongation	≥ 40% (304), ≥ 40% (316)	Measured on 50 mm gauge length, indicating excellent formability
Size Range – Equal Leg	20×20×3 mm to 200×200×24 mm	Standard equal leg angle profiles; custom sizes available on request
Size Range – Unequal Leg	30×20×3 mm to 200×150×18 mm	Unequal leg configurations for asymmetric load applications
Length	6 m, 9 m, 12 m or cut-to-length	Standard mill lengths; custom cutting service available
Surface Finish	Hot-rolled (No.1), pickled, shot-blasted, polished	Additional finishes such as 2B, BA, or mirror polish upon request
Application	Structural framing, chemical plants, food processing, marine equipment	Widely used in construction, petrochemical, pharmaceutical, and architectural projects
Certification	ISO 9001, EN 10204 3.1 MTC, PED, NACE MR0175	Mill test certificates provided with each shipment
Packaging	Bundled with steel strips, waterproof paper, wooden crates	Seaworthy export packaging; custom packing per buyer requirements
MOQ	1 metric ton	Smaller quantities negotiable for special grades or sizes

Stainless Steel Angles - ASTM Certified Mill Direct Manufacturer

Stainless steel angles are among the most versatile structural profiles used across construction, industrial fabrication, and architectural applications worldwide. As an ASTM-certified mill direct manufacturer, we produce premium-grade stainless steel angle bars that meet rigorous international standards including ASTM A276, ASTM A484, and EN 10088. Our vertically integrated production facility enables us to deliver superior quality angles at cost-effective mill-direct rates, eliminating intermediary markups while maintaining strict dimensional tolerances. Whether you require equal leg or unequal leg configurations, hot-rolled or laser-fused profiles, our comprehensive inventory and custom manufacturing capabilities ensure your project specifications are met with precision and reliability.

What Is Stainless Steel Angle?

A stainless steel angle is an L-shaped structural profile formed by two legs joined at a 90-degree vertex. Manufactured through hot rolling or laser fusion welding processes, these profiles combine the inherent corrosion resistance of stainless steel alloys with excellent structural load-bearing capacity. Available in equal leg configurations (e.g., 50mm × 50mm) and unequal leg configurations (e.g., 75mm × 50mm), stainless steel angles serve critical roles as structural supports, frame reinforcements, edge protectors, and decorative trim elements in environments demanding long-term durability against moisture, chemicals, and elevated temperatures.

Stainless Steel Angle Technical Specifications

Our stainless steel angles are manufactured to exacting standards across multiple grades and dimensions to satisfy diverse engineering requirements.

Parameter	Specification
Common Grades	304/304L, 316/316L, 321, 310S, 2205 Duplex
Leg Size Range	20mm × 20mm to 200mm × 200mm (equal); 30mm × 20mm to 200mm × 150mm (unequal)
Thickness Range	2mm – 25mm
Length	6m, 12m standard; custom lengths available
Tensile Strength (304)	515 MPa minimum per ASTM A276
Yield Strength (304)	205 MPa minimum
Density (304)	7.93 g/cm³ at 20°C
Surface Finish	Mill finish, No.1, pickled, polished (No.4, BA, mirror)
Tolerances	Per ASTM A484 / EN 10056-2
Production Method	Hot-rolled, laser-fused

Grade 304 stainless steel angles offer outstanding anti-corrosion properties suitable for general-purpose structural and architectural use, with a maximum carbon content of 0.08% and chromium content of 18%–20%. For marine environments or chemical processing facilities requiring enhanced resistance to chloride pitting, our 316L angles contain 2%–3% molybdenum and maintain a low carbon content of 0.03% maximum, significantly reducing susceptibility to intergranular corrosion after welding.

Applications of Stainless Steel Angle Bars

Stainless steel angles find extensive application across industries where structural integrity and corrosion resistance are non-negotiable. In construction and architecture, they serve as structural framing members, curtain wall supports, and decorative corner trims. The food and pharmaceutical sectors utilize electropolished angles for hygienic equipment frames that withstand repeated CIP (clean-in-place) washdowns. In petrochemical plants, 316L and duplex 2205 angles provide reliable performance in high-chloride, high-temperature piping support systems operating at temperatures up to 300°C. Marine infrastructure, wastewater treatment facilities, and power generation plants also rely on these profiles for long service life with minimal maintenance.

stainless steel angles supplier

Get a Competitive Quote for Stainless Steel Angles

As a mill direct manufacturer with over 50,000 metric tons of annual production capacity, we deliver premium stainless steel angles at competitive pricing with reliable lead times. Our technical team is ready to assist with grade selection, custom sizing, and project-specific certification requirements.

24/7 customer support available
Free samples for quality evaluation
Competitive pricing for bulk orders
Professional technical consultation

Contact us today to get your free quote within 24 hours!

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Ratings & Reviews

5.0

Very satisfied

Based on 8 reviews for verified purchases

Supplier service

5.0

On-time shipment

5.0

Supplier service

5.0

Neil Patterson

United Kingdom

verified purchases

2025-01-09

Some Surface Finish Issues — Resolved After Communication
Ordered 3 tons of 316L angles (50mm × 50mm × 5mm) with No.4 polished finish for visible architectural handrail supports on a riverside development. About 15% of the pieces in the first delivery had minor surface scratches that didn't meet our architect's aesthetic requirements. I raised this with their customer service team and to their credit, they responded quickly, shipped replacement pieces within two weeks at no additional cost, and improved the protective packaging for the replacements. The material quality and dimensional accuracy were fine throughout — it was purely a surface handling issue. Would order again but will specify enhanced packaging upfront.

Priya Venkatesh

India

verified purchases

2025-01-31

Competitive Pricing on 310S Angles for High-Temp Application
We needed 310S stainless steel angles (80mm × 80mm × 8mm) for furnace support structures operating above 250°C in our cement plant. This grade isn't easy to source at reasonable prices locally, so we went with this manufacturer after comparing quotes from five different suppliers. The price per ton was about 10% below the next closest offer for equivalent ASTM A276 certified material. Material arrived in good condition after 6 weeks. Deducting one star only because the initial quote took 36 hours rather than the advertised 24, though the final pricing made the wait worthwhile.

David Thornton

United States

verified purchases

2025-02-22

Good Value for the Price — Minor Documentation Delay
Ordered 5 tons of 304 hot-rolled angles (65mm × 65mm × 6mm, 6m lengths) for structural framing in a brewery expansion. The material quality was solid — tensile strength came back at 540 MPa on our independent testing, well above the 515 MPa minimum. Pricing was very competitive compared to domestic mills. Only reason for 4 stars instead of 5 is that the original mill test certificates had a minor formatting error that took about a week to get corrected. Not a deal-breaker, but our QA department needed the revised documents before we could release material to the shop floor.

Ahmed Al-Rashidi

UAE

verified purchases

2025-03-16

Reliable Mill Direct Pricing for Large-Volume Wastewater Project
Procured 35 metric tons of 316L angles in multiple dimensions (60×60×6mm through 150×150×12mm) for a major wastewater treatment plant expansion in Abu Dhabi. The mill direct pricing was noticeably lower than what regional distributors were quoting — roughly 12-15% savings on equivalent certified material. All pieces met ASTM A276 specifications and the low carbon content was verified at 0.024% on the mill certs. Delivery was staged in two shipments as requested, both arriving on schedule. Their 24/7 support was genuinely available when we needed to adjust the second shipment quantities.

Sarah Mitchell

Australia

verified purchases

2025-04-07

Great Technical Support and Fast Sample Turnaround
We were specifying stainless angles for a waterfront commercial building in Sydney and weren't sure whether to go with 304 or 316L given the coastal salt spray exposure. Their technical team responded within hours with a detailed comparison and recommended 316L with No.4 polished finish for the exposed architectural trim sections. They sent free samples within a week, which our architect approved immediately. The bulk order of 6 tons in various sizes from 40×40×4mm to 100×100×8mm arrived in 5 weeks with all requested MTCs. Impressive service for an overseas supplier.

Klaus Weidmann

Germany

verified purchases

2025-04-29

Duplex 2205 Angles Met Strict Petrochemical Specs
Sourced 8 tons of duplex 2205 unequal leg angles (100mm × 75mm × 10mm) for pipe support systems in a chemical plant operating at 280°C. We required EN 10088 compliance with full traceability documentation and Charpy impact test results — everything was provided without issue. The yield strength tested above 450 MPa, well exceeding our minimum requirement. Packaging was properly bundled with end caps, and the 12m lengths arrived without any bending or surface damage. Very professional operation from quotation through to delivery.

Robert Haines

United States

verified purchases

2025-05-20

Consistent Quality Across Multiple Orders — Now Our Primary Supplier
This is our fourth order in 18 months — started with a trial batch of 304 equal leg angles (50mm × 50mm × 5mm) and now we're purchasing 20+ tons per quarter for food processing equipment frames. The pickled surface finish is consistently clean, which saves us significant prep time before electropolishing. Their technical team helped us switch from 304 to 304L for certain welded assemblies, which was a smart recommendation. Lead times have been reliable at around 4 weeks to our Houston warehouse every time.

James Crawford

United Kingdom

verified purchases

2025-06-05

Excellent 316L Angles for Our Marine Platform Project
We ordered 12 metric tons of 316L stainless steel angles in 75mm × 75mm × 6mm for an offshore platform refurbishment in the North Sea. Every piece arrived with full ASTM A276 mill test certificates and the dimensional tolerances were spot-on per ASTM A484. The molybdenum content tested at 2.4%, which gave us confidence for the chloride-heavy environment. Delivery to Southampton port took 32 days from order confirmation. Our welders reported excellent workability with no intergranular corrosion issues in post-weld testing. Will definitely be sourcing our next phase requirements from this mill.

Know your supplier

Hongji Profiles Co., Ltd.

Manufacturer, Trading Company · 5 yrs on Sinoali.com

Located in China

Company overview

Year Established

2010

On-time delivery rate

100.0%

Online revenue

100.0%

Plant Area

>=2000m²

number of employees

Response Time

<=4h

Company information More goods

Factory Introduction

Hongji Profiles Co., Ltd. is a professional manufacturer and supplier specializing in the R&D, production and sales of high-quality steel profiles. With years of experience in the metallurgical industry, we have earned a solid reputation for reliability, precision and customer-centric service, providing global clients with premium steel profile solutions for diverse industrial and architectural needs.

Our core business covers a full range of steel profiles, including angle steel, channel steel, I-beams, H-beams, C-section steel, Z-section steel, flat steel and custom special steel profiles. These products are widely applied in building structures, bridges, transmission towers, industrial machinery, automotive components and shipping. We strictly control material selection, adopting high-quality steel grades such as S235JR, S355JR, SS400, A36 and Q355 series to ensure excellent mechanical properties, durability and corrosion resistance.

Customer visits

FAQ

Q: Which international standards do your angle steels meet?

A: They meet international standards such as ASTM A36, EN 10025, and JIS G3101. We provide MTR material certificates and SGS third-party inspection reports to ensure zero returns in the European, American, and Australian markets.

Q: Is anti-corrosion treatment of angle steel suitable for sea freight export?

A: Hot-dip galvanizing (zinc layer ≥80μm) is standard, providing over 3 years of resistance to seawater corrosion; moisture-proof paper + wooden pallet packaging, 25 tons in a 40-foot container, ensuring rust prevention upon arrival at the warehouse.

Q: How do I choose the specifications? Do you support custom sizes?

A: Equilateral sizes (25-200mm) and unequal sizes are all in stock. We provide load calculation tables according to US/EU standards. MOQ starts from 5 tons and can be customized. Free CAD drawings and strength analysis services are provided.

Q: What are the shipping time and CIF pricing?

A: Shipments from Shanghai/Tianjin ports arrive in Europe and America in 20-30 days, and in Southeast Asia in 7-12 days; transparent CIF/FOB pricing, 8% discount for large orders, full GPS tracking and insurance.

Q: What are the trade terms? Is payment secure?

A: We support L/C, T/T with a 30% deposit, and flexible D/P payments; ITC performance insurance provides zero risk for overseas buyers. We also provide letter of credit templates and trade guidance.

Q: Can you provide processing services for export?

A: We support pre-cutting, drilling, and welding of semi-finished products, with processing accuracy of ±0.5mm according to drawings; export packaging in wooden crates helps customers save 40% of on-site processing time and costs.

Customizable

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