Stainless Steel Angle Bar

Shaanxi Shangyou Stainless Steel Co., Ltd. supplies stainless steel angle bars for structural frames, equipment supports, architectural fabrication, chemical processing, food machinery and marine-related projects.

Our stainless steel angles are available in equal-leg and unequal-leg profiles, with common grades including 304, 304L, 316, 316L, 321, 310S and duplex 2205. Depending on the required dimensions, surface condition and application, the angle sections can be supplied as hot-rolled, cold-drawn, press-brake formed or custom-fabricated products.

We provide custom length cutting, hole drilling, polishing, edge finishing, dimensional inspection, positive material identification and export packaging. Material certificates can be supplied according to EN 10204 3.1.

Available services:

• Equal and unequal stainless steel angles
• Metric and imperial dimensions
• Custom leg width and thickness
• Fixed-length cutting
• Drilling and slot machining
• Pickled, bright or polished surfaces
• PMI, dimensional and mechanical inspection
• Mill Test Certificate and third-party inspection
• Export bundles, wooden cases and container loading

A stainless steel angle bar is an L-shaped structural profile with two perpendicular legs. It is used to reinforce corners, build equipment frames, support platforms and connect structural components.

Stainless steel angles are divided into two main types:

Both legs have the same width, such as:

• 30 * 30 * 3 mm
• 40 * 40 * 4 mm
• 50 * 50 * 5 mm
• 75 * 75 * 6 mm
• 100 * 100 * 10 mm

Equal angles are commonly used for frames, supports, brackets, racks and general fabrication.

The two legs have different widths, such as:

• 50 * 30 * 4 mm
• 60 * 40 * 5 mm
• 75 * 50 * 6 mm
• 100 * 75 * 8 mm
• 150 * 100 * 10 mm

Unequal angles are selected when the structure requires different load distribution, connection space or installation clearance on each leg.

The available size range depends on the stainless steel grade, manufacturing process and ordered quantity. Custom-formed angles are available for dimensions that are not covered by standard mill production.

304 stainless steel is the most widely used grade for general structural and fabrication applications. It provides good corrosion resistance, formability, weldability and surface appearance.

Typical applications:

• Machinery frames
• Architectural supports
• Commercial kitchens
• Food-processing equipment
• Indoor and outdoor structures
• General fabrication

304 should not automatically be selected for continuously wet, high-chloride or aggressive marine environments.

304L has a lower carbon content than standard 304. It is commonly selected for welded structures where improved resistance to weld-related sensitization is required.

Recommended for:

• Welded equipment frames
• Chemical-processing supports
• Food and beverage systems
• Fabrications that cannot be post-weld heat treated
• Large welded assemblies

The low-carbon grade should be confirmed through the material certificate and appropriate chemical analysis. Handheld XRF alone cannot independently verify the carbon content required to distinguish 304 from 304L.

316 contains molybdenum, providing improved resistance to pitting and crevice corrosion compared with 304 in many chloride-containing environments.

Typical applications:

• Coastal architecture
• Chemical equipment
• Water-treatment systems
• Pharmaceutical facilities
• Marine-related fabrication
• Outdoor structures exposed to salts

316 offers improved chloride resistance, but suitability still depends on chloride concentration, temperature, crevice conditions, cleaning frequency and expected service life.

316L combines molybdenum alloying with a low carbon content. It is frequently selected for welded equipment, coastal installations and process plants requiring both corrosion resistance and reliable fabrication performance.

Common uses:

• Welded chemical equipment
• Marine-related structures
• Pharmaceutical machinery
• Food-processing equipment
• Wastewater treatment plants
• Coastal building components

316L should not be described as universally resistant to seawater. Long-term immersion, high temperature, stagnant water and tight crevices may require duplex or higher-alloy materials.

321 is a titanium-stabilized austenitic stainless steel. It is used where components are exposed to elevated temperatures or where resistance to sensitization during high-temperature service is important.

Typical applications:

• Heat-resistant support frames
• Exhaust equipment
• Furnace components
• Thermal-processing equipment
• High-temperature welded assemblies

The actual service temperature must be evaluated according to loading, oxidation, thermal cycling and applicable design requirements.

310S contains higher chromium and nickel levels and is selected for improved oxidation resistance at elevated temperatures.

Typical applications:

• Furnace supports
• Heat-treatment fixtures
• Kiln components
• High-temperature brackets
• Thermal-processing equipment

310S provides high-temperature oxidation resistance but is not automatically suitable for every carburizing, sulfidizing or reducing atmosphere.

Duplex 2205 provides higher strength and improved chloride pitting resistance compared with common 304L and 316L austenitic grades.

Typical applications:

• Chemical-processing structures
• Desalination equipment supports
• Offshore and coastal fabrication
• Pulp and paper equipment
• Wastewater treatment
• Chloride-exposed industrial structures

Duplex angle fabrication requires controlled welding procedures, suitable filler metals and proper heat-input management to maintain an acceptable ferrite–austenite phase balance.

430 is a ferritic stainless steel with good appearance and moderate corrosion resistance. It is magnetic and is generally used in less aggressive environments.

Typical applications:

• Indoor decorative structures
• Display frames
• Appliance components
• Light-duty brackets
• Interior architectural fabrication

430 is less resistant to chloride corrosion than 304 or 316 grades

Material selection should be based on the actual operating environment rather than grade name alone. Important factors include temperature, chloride concentration, chemical exposure, crevice design, cleaning conditions, welding method and required service life.

Typical maximum or nominal composition values are shown for preliminary comparison. The final Mill Test Certificate and specified product standard govern the delivered material.

The following values are general references for annealed material. Mechanical requirements vary according to grade, manufacturing method, thickness and applicable specification.

For structural calculations, engineers should use the certified properties, section dimensions and applicable design code instead of relying only on typical catalogue values.

Hot-rolled angles are produced as integral structural profiles. They are commonly selected for load-bearing frames, industrial supports and heavy fabrication.

Advantages:

• Integral L-shaped section
• Suitable for structural fabrication
• Wide availability in common sizes
• Good weldability
• Cost-effective for standard dimensions

Hot-rolled products normally have a mill, annealed or pickled surface rather than a decorative bright finish.

Cold-drawn angles are used when tighter dimensional control, sharper appearance or a brighter surface is required.

Advantages:

• Improved dimensional accuracy
• Better straightness
• Smoother surface
• Suitable for precision fabrication
• Cleaner appearance

Cold-drawn sections may have different mechanical properties from annealed hot-rolled sections due to work hardening.

Formed angles are produced from stainless steel sheet or plate by bending. They are suitable for thin sections, unusual leg widths, custom thicknesses or decorative finishes.

Important purchasing points:

• Inside bend radius
• Outside corner radius
• Grain direction
• Springback tolerance
• Surface protection film
• Leg angle tolerance
• Weld seam location, when applicable

A press-brake formed angle is not dimensionally identical to a hot-rolled angle. The bend radius and corner geometry must be considered during assembly.

Custom heavy or non-standard angle sections can be produced by cutting, bending or welding stainless steel plate.

This option may be used when the project requires:

• Extra-large leg widths
• Heavy wall thickness
• Special unequal dimensions
• Tight length control
• Machined holes or slots
• Non-standard corner geometry

The drawing should clearly specify dimensions, tolerances, weld requirements, surface condition and inspection criteria.

For polished products, the buyer should confirm the grit, polishing direction, acceptable scratch level, protective film and whether all surfaces or only visible surfaces require polishing.

Stainless steel angle bars may be supplied according to one or more of the following standards, depending on the grade, manufacturing method and project requirements:

• ASTM A276 — Stainless steel bars and shapes
• ASTM A484/A484M — General requirements for stainless steel bars, billets and forgings
• EN 10088-3 — Stainless steels for semi-finished products, bars, rods, wire, sections and bright products
• EN 10056-1 — Structural steel equal and unequal angles, dimensions
• EN 10056-2 — Tolerances on shape and dimensions
• EN 10204 — Metallic product inspection documents
• ASME material requirements — When specified for pressure-related fabrication
• Customer drawings and project specifications

Not every standard applies to every angle manufacturing route. The purchase order should separately identify the material grade, dimensional standard, tolerance requirement, inspection document and intended application.

The theoretical weight of an angle depends on:

• First leg width
• Second leg width
• Thickness
• Inside corner radius
• Material density
• Manufacturing tolerance

A simplified calculation for an angle without considering corner radii is:

Cross-sectional area:

A = t * (a + b − t)

Where:

• A = approximate cross-sectional area
• a = first leg width
• b = second leg width
• t = thickness

Approximate weight per metre:

Weight = A * density

For austenitic stainless steel, a general density reference of approximately 7.9–8.0 g/cm³ may be used for preliminary estimates. Duplex and ferritic grades may have different densities.

The actual shipping weight should be calculated from the confirmed section drawing or verified by weighing because corner radius, dimensional tolerance and manufacturing method affect the final result.

Angle bars can be cut to project lengths to reduce onsite labour and material waste.

Available options include:

• Band-saw cutting
• Abrasive cutting
• Laser cutting
• Mitre cutting
• Batch fixed-length cutting

Buyers should specify the required length tolerance and whether the cut ends must be deburred.

Custom holes and slots can be produced according to drawings.

Please provide:

• Hole diameter
• Hole quantity
• Centre distance
• Edge distance
• Slot dimensions
• Position tolerance
• Countersink or counterbore requirements

Stainless steel angle bars can be welded by TIG, MIG or other qualified welding methods.

Important controls include:

• Suitable filler metal
• Clean joint preparation
• Controlled heat input
• Removal of heat tint
• Pickling and passivation
• Prevention of carbon steel contamination

Duplex and high-alloy grades require qualified welding procedures and more careful control than common 304 or 316 grades.

Polishing can be applied to visible surfaces or the complete profile.

Before ordering, confirm:

• Polishing grit
• Polishing direction
• Visible surfaces
• Scratch acceptance criteria
• Edge finishing
• Protective film requirement

Our stainless steel angle inspection can include:

• Mill certificate review
• Heat number verification
• Chemical composition confirmation
• PMI testing
• Grade marking inspection

PMI testing is useful for verifying major alloying elements such as chromium, nickel and molybdenum. However, handheld XRF cannot independently determine carbon content and should not be used alone to distinguish low-carbon L grades.

• Leg width
• Thickness
• Length
• Inside and outside radius
• Squareness
• Straightness
• Twist
• Cut-length tolerance
• Hole and slot position

• Scratches
• Pitting
• Scale
• Edge damage
• Polishing consistency
• Surface contamination
• Packaging protection

Depending on the order specification:

• Tensile testing
• Hardness testing
• Intergranular corrosion testing
• Ferrite measurement
• Ultrasonic testing
• Dye penetrant testing
• Third-party inspection
• Customer witness inspection

Testing requirements must be agreed before production because they may affect sampling, lead time and price.

Stainless steel angle bars are used to build:

• Machine frames
• Equipment skids
• Maintenance platforms
• Walkway structures
• Access ladders
• Industrial racks
• Support brackets

Applications include:

• Façade support systems
• Door and window frames
• Decorative corners
• Balustrade structures
• Wall protection
• Canopy supports
• Interior metalwork

304L and 316L stainless steel angles are used in:

• Food-processing frames
• Commercial kitchens
• Beverage equipment
• Conveyor supports
• Washdown-area structures
• Packaging machinery

Surface finish, drainage design and cleanability should be considered in hygienic environments.

Typical uses include:

• Equipment support frames
• Pipe-support structures
• Tank platforms
• Process skids
• Cleanroom equipment
• Chemical-processing machinery

The stainless steel grade should be selected according to the actual chemical, concentration, temperature and cleaning process.

316L or duplex 2205 may be selected for:

• Coastal structures
• Dock equipment
• Marine-related machinery
• Desalination equipment
• Salt-exposed outdoor frames

Grade selection should account for direct salt spray, immersion, crevices, surface finish, maintenance and design life.

321 and 310S angles can be used for:

• Furnace frames
• Heat-treatment fixtures
• Kiln supports
• Exhaust structures
• Thermal-processing systems

The design must account for oxidation, creep strength, thermal expansion and repeated heating cycles.

The angle type should be selected according to structural loading, connection design, installation space and fabrication requirements.

These two product forms should not be treated as automatically interchangeable. The inside radius, section properties, residual stress and tolerance may differ.

We supply common austenitic, ferritic, heat-resistant and duplex stainless steel angle grades for different operating environments.

Angle bars can be cut, drilled, polished, deburred and fabricated according to customer drawings.

Heat numbers, Mill Test Certificates and PMI inspection are available to support material identification and project documentation.

Leg width, thickness, straightness, squareness, length and custom hole positions can be inspected before shipment.

Products are packed with steel bundles, waterproof materials, protective wrapping or wooden cases according to product finish and shipping method.

We review the grade, dimensions, tolerance, fabrication route, surface requirements and inspection scope before quotation and production.

Available packaging methods include:

• Steel strap bundles
• Waterproof paper wrapping
• Plastic film protection
• Wooden pallets
• Fumigated wooden cases
• Edge and corner protectors
• Heat number and size labels
• Custom shipping marks
• Container loading reinforcement

Polished angle bars can be individually protected or separated with film and padding to reduce scratching during transportation.

Please provide the following information:

1. Stainless steel grade
2. Equal or unequal angle
3. Leg width * leg width * thickness
4. Required length
5. Quantity or total weight
6. Manufacturing process, if specified
7. Surface finish
8. Dimensional tolerance
9. Cutting, drilling or polishing requirements
10. Inspection and certificate requirements
11. Packing method
12. Destination port or delivery location

The terms are commonly used to describe the same L-shaped stainless steel profile. “Angle bar" is usually preferred in technical specifications, while “angle iron" remains a common commercial term even when the material is stainless steel rather than carbon steel.

Yes. Equal-leg, unequal-leg and custom-formed L-shaped profiles are available. The exact size range depends on the grade, thickness, production method and ordered quantity.

304 is suitable for many normal outdoor environments. 316 or 316L is generally preferred for coastal or chloride-exposed locations. Duplex 2205 may be considered for more demanding chloride environments and higher-strength requirements.

No. 316L has better chloride resistance than 304, but it can still suffer pitting or crevice corrosion under long-term immersion, elevated temperature, stagnant conditions or tight crevices. Service conditions must be reviewed before grade selection.

Yes. Polished, brushed, satin and mirror-finished angles can be supplied. Please specify the required grit, polishing direction, visible surfaces and scratch acceptance criteria.

Yes. We provide fixed-length cutting, mitre cutting and batch cutting. Length tolerance and end-finishing requirements should be specified before production.

Yes. Hole drilling, slotting, laser cutting and related machining services are available according to customer drawings.

EN 10204 3.1 Mill Test Certificates are commonly available. Third-party inspection and additional testing can be arranged when specified before production.

PMI can identify major alloying elements, but handheld XRF does not measure carbon accurately enough to independently confirm an L-grade designation. The low-carbon grade should be verified through the material certificate and suitable chemical analysis.

The minimum order quantity depends on the grade, dimensions, production process and stock availability. Small quantities may be available from existing stock, while custom-formed or special-size angles normally require a production minimum.

Choose hot-rolled angle for common structural sizes and integral sections. Choose formed angle when you need a non-standard leg width, thin wall, special surface finish or controlled custom dimensions.

Yes, subject to size and production availability. Duplex fabrication requires appropriate welding procedures, filler metal and heat-input control.

Shaanxi Shangyou Stainless Steel Co., Ltd. supplies stainless steel equal angles, unequal angles and custom L-shaped profiles for industrial, architectural, chemical, food-processing and marine-related projects.

Send us your required grade, dimensions, thickness, length, quantity, surface finish and processing drawing for technical review and quotation.

Request Price and Availability
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Shaanxi Shangyou Stainless Steel Co., Ltd.