Unequal Angles: Sizes, Weight Chart, Prices & Specifications

Unequal Angles: Sizes, Weight Chart, Prices & Specifications<\/h2>

Unequal angle steel (also called unequal leg angle or L-section) is a hot-rolled structural section with two legs of different lengths meeting at a 90° corner. Because the longer leg carries more material and stiffness in one direction, unequal angles are specified wherever a member must resist higher loads along one axis — stair stringers, edge beams, roof frames, and primary connection members. This page is the complete buying reference from Sino East Steel Group — a direct steel structure manufacturer in Tianjin, China: unequal angle sizes and the full unequal angle weight chart, material grades and galvanizing options, 2026 export prices, and the exact way to order unequal angles for your project.

1. What Is an Unequal Angle?

An unequal angle is an L-shaped hot-rolled section in which the two legs have different widths, for example 100 × 63 mm or 75 × 50 mm. It is rolled from billet in a single pass sequence, then straightened, cooled, and cut to length. The asymmetric geometry gives the section a higher section modulus about the axis parallel to the long leg, which makes it efficient for members that are primarily loaded in one direction — a beam that spans between supports, for instance, or a stair stringer that carries tread loads along its long leg.

Unequal angles are produced to the same dimensional standards as equal angles: EN 10056-1/2 (European dimensions), GB/T 706 (Chinese hot-rolled sections), ASTM A36 / A572, and JIS G 3192. Steel grades follow EN 10025-2, GB/T 1591, ASTM A36/A572, or JIS G 3101, so unequal angles can be specified for virtually any international project code.

2. Unequal Angle vs Equal Angle: Which One Do You Need?

Comparison	Unequal Angle	Equal Angle
Cross-section	Two legs of different lengths (e.g. 100 × 63)	Both legs the same length (e.g. 100 × 100)
Load direction	Higher stiffness along the long leg; ideal for one-directional bending	Symmetric stiffness; ideal for bracing and connections
Typical sizes	30 × 20 × 3 up to 200 × 150 × 18	20 × 20 × 3 up to 200 × 200 × 24
Best for	Stair stringers, edge beams, roof frames, asymmetric connections	Diagonal bracing, brackets, cleats, general framing
Stock availability	Good; less common sizes made to order	Very high — standard mill production

In practice most structures contain both: equal angles for bracing and connections, unequal angles for edge and load-carrying members. See our equal angles page for the symmetric-profile size and weight data.

3. Unequal Angle Sizes & Dimensions

Standard unequal angle sizes run from 30 × 20 × 3 mm to 200 × 150 × 18 mm. The table below lists the common series with their standard thickness ranges and delivery lengths. Sections are marked long leg × short leg × thickness; custom lengths and non-standard combinations are produced to order.

Section (mm)	Leg × Leg × Thickness Range	Standard Lengths	Typical Use
30 × 20	30 × 20 × 3 – 4	6 m / 12 m	Light frames, trims
40 × 25	40 × 25 × 3 – 5	6 m / 12 m	Handrails, brackets
45 × 30	45 × 30 × 3 – 5	6 m / 12 m	Light supports
50 × 30	50 × 30 × 3 – 5	6 m / 12 m	Window frames, trims
50 × 32	50 × 32 × 4 – 5	6 m / 12 m	Small frames
56 × 36	56 × 36 × 4 – 5	6 m / 12 m	Bracing, small trusses
60 × 40	60 × 40 × 4 – 6	6 m / 12 m	Roof bracing
63 × 40	63 × 40 × 4 – 6	6 m / 12 m	Bracing, supports
70 × 45	70 × 45 × 4 – 6	6 m / 12 m	Frame members
75 × 50	75 × 50 × 5 – 8	6 m / 12 m	Stair stringers, edge beams
80 × 50	80 × 50 × 5 – 8	6 m / 12 m	Edge beams, frames
90 × 56	90 × 56 × 6 – 10	6 m / 12 m	Roof edge members
100 × 63	100 × 63 × 6 – 10	6 m / 12 m	Truss chords, edge beams
100 × 75	100 × 75 × 8 – 12	6 m / 12 m	Main beams, chords
125 × 75	125 × 75 × 8 – 12	6 m / 12 m	Heavy edge beams
125 × 80	125 × 80 × 8 – 12	6 m / 12 m	Frames, chords
140 × 90	140 × 90 × 8 – 12	6 m / 12 m	Heavy trusses
150 × 90	150 × 90 × 10 – 12	6 m / 12 m	Heavy frames
150 × 100	150 × 100 × 10 – 14	6 m / 12 m	Main beams
160 × 100	160 × 100 × 10 – 14	6 m / 12 m	Heavy industrial frames
180 × 110	180 × 110 × 12 – 14	6 m / 12 m	Heavy beams, columns
200 × 100	200 × 100 × 12 – 14	6 m / 12 m	Heavy edge beams
200 × 125	200 × 125 × 14 – 16	6 m / 12 m	Heavy trusses, towers
200 × 150	200 × 150 × 15 – 18	6 m / 12 m	Stadium and heavy structures

Dimensional tolerances follow EN 10056-2 and GB/T 706. For a combination not listed — for example 120 × 80 or 170 × 110 — send your requirement and we will confirm rolling or sourcing options with lead time and pricing.

4. Unequal Angle Weight Chart (kg per metre)

Indicative theoretical weights for hot-rolled unequal angles, calculated as (long leg + short leg − thickness) × thickness × 0.00785 kg/m per GB/T 706, with standard section weight deviation of ±3–5%. Use this unequal angle weight chart for freight estimates, lifting plans, and structural self-weight calculations.

Size (long × short)	3 mm	4 mm	5 mm	6 mm	8 mm	10 mm	12 mm	14 mm
30 × 20	1.11	1.44	—	—	—	—	—	—
40 × 25	1.46	1.92	2.36	—	—	—	—	—
45 × 30	1.70	2.23	2.75	—	—	—	—	—
50 × 30	1.81	2.39	2.94	—	—	—	—	—
50 × 32	—	2.45	3.02	—	—	—	—	—
56 × 36	—	2.76	3.42	—	—	—	—	—
60 × 40	—	3.01	3.73	4.43	—	—	—	—
63 × 40	—	3.11	3.85	4.57	—	—	—	—
70 × 45	—	3.49	4.32	5.13	—	—	—	—
75 × 50	—	—	4.71	5.61	7.35	—	—	—
80 × 50	—	—	4.91	5.84	7.66	—	—	—
90 × 56	—	—	—	6.59	8.67	10.68	—	—
100 × 63	—	—	—	7.40	9.73	12.01	—	—
100 × 75	—	—	—	—	10.49	12.95	15.36	—
125 × 75	—	—	—	—	12.06	14.92	17.71	—
125 × 80	—	—	—	—	12.37	15.31	18.18	—
140 × 90	—	—	—	—	13.94	17.27	20.54	—
150 × 90	—	—	—	—	—	18.06	21.48	—
150 × 100	—	—	—	—	—	18.84	22.42	25.94
160 × 100	—	—	—	—	—	19.63	23.36	27.04
180 × 110	—	—	—	—	—	—	26.19	30.33
200 × 100	—	—	—	—	—	—	27.13	31.43
200 × 125	—	—	—	—	—	—	—	34.18
200 × 150	—	—	—	—	—	—	—	—

Example: 400 m of 100 × 63 × 8 unequal angle weighs about 400 × 9.73 = 3,892 kg — roughly 3.9 tonnes for freight planning. If you need the weight of a size not shown, apply the formula above or ask us — we will confirm the exact mill theoretical weight with your quotation.

5. Material Grades & Corrosion Protection

Grade / Option	Specification	Best For
Structural carbon steel	Q235B / S235JR — yield 235 MPa	General framing, bracing, connections
High-strength steel	Q355B / S355JR / ASTM A572 Gr.50 — yield 355 MPa	Long-span beams, heavy loads
American grades	ASTM A36 — yield 250 MPa	Projects specified to US codes
Japanese grades	SS400 / SM490 per JIS G 3101	Projects specified to Japanese codes
Impact-tested grades	S355J2 / Q355D — Charpy at −20 °C	Cold climates, dynamic loads
Hot-dip galvanized	HDG per ISO 1461, 70–85 µm	Coastal, humid, outdoor exposure

Unequal angles are frequently used outdoors — stair treads, walkways, roof edges — so galvanizing is a common requirement. We coat after fabrication where needed, so bolt holes and cut ends are fully protected. Every batch ships with EN 10204 3.1 mill test certificates.

6. Unequal Angle Prices in 2026 (FOB China)

Indicative export pricing from our Tianjin factory (FOB, 2026). Prices move with global billet markets and exchange rates; the ranges below are for budgeting, and firm quotations are issued for each specific size and quantity.

Product	Indicative Price	MOQ
Unequal angle Q235B / S235JR, standard sizes	USD 530–630 per tonne FOB	5 tonnes (mix sizes OK)
Unequal angle Q355B / S355JR / A572 Gr.50	USD 570–690 per tonne FOB	5 tonnes
Non-standard / made-to-order sizes	USD 580–720 per tonne FOB	10 tonnes
Hot-dip galvanized unequal angle	USD 790–960 per tonne FOB	10 tonnes
Cut to length / drilling / punching	Included or nominal charge	—

For a firm unequal angle price quotation, send your sizes, lengths, quantities, and destination port to paul@sinoeaststeel.com. To estimate the full landed cost of a steel building in your market, see our Kenya, Nigeria, and UAE cost guides.

7. Unequal Angle Applications

• Stair stringers and walkways — the long leg carries tread loads; typical sections 75 × 50 and 100 × 63.
• Roof edge and eave members — asymmetric members along roof edges and parapets where one-directional stiffness is needed.
• Truss chords and diagonals — unequal sections make efficient chords for long-span roof trusses.
• Edge beams and lintels — supporting brick or panel cladding above openings.
• Connection and gusset stiffeners — added stiffness where primary members meet.
• Machinery and equipment frames — base frames and supports with dominant load directions.

For the full range of steel structure products we manufacture — PEB, warehouses, heavy steel, and all secondary sections — start from our product catalogue.

8. Why Buy Unequal Angles Direct from Sino East Steel Group

Sino East Steel Group is a direct China steel structure manufacturer, not a trader. Since 1993 we have operated a 50,000 m² fabrication facility in Tianjin Industrial Park, Daqiuzhuang — China’s largest steel processing hub — with our own cutting, drilling, welding, and hot-dip galvanizing capacity.

• Factory-direct pricing — no middleman; 20–40% below regional re-seller prices.
• Certified quality — ISO 9001:2015, ISO 3834-2, EN 1090 EXC3/EXC4, AWS D1.1; EN 10204 3.1 mill test certificates on every batch.
• Custom fabrication — cutting to length, drilling, punching, and welding of angle components to your shop drawings.
• Export documentation — invoice, packing list, certificate of origin, and EN 10204 3.1 certificates for smooth clearance.
• 100,000+ tonnes annual capacity — standard unequal angle sizes ship in 1–2 weeks; fabricated and galvanized orders in 3–4 weeks.

Before committing to any factory, use our manufacturer verification checklist — we welcome third-party inspection at any stage of production.

9. How to Order Unequal Angles from China

1. Send your section size (long leg × short leg × thickness), length, total quantity, and destination port.
2. Receive an itemized quotation within 24–48 hours (FOB/CIF/CFR).
3. Approve the mill certificate requirements and any fabrication details.
4. We produce and test (SGS/BV/TÜV inspection optional).
5. We ship FCL from Tianjin with full export documentation.

For complete projects — angles plus primary steel and purlins — see our procurement guide for importers.

10. Tolerances, Standards & Marking

Unequal angles are supplied to the dimensional tolerances of EN 10056-2 and GB/T 706: leg tolerance typically ±1.0 mm up to 100 mm and ±1.5 mm above, thickness tolerance ±0.3–0.5 mm depending on size, and a maximum leg deviation of 2° at the corner. Length tolerance is +0/+40 mm for random lengths and +0/+5 mm for exact cut lengths. Sections are marked with the size, grade, heat number, and manufacturer, and each bundle carries a tie-on tag with your project details.

Mechanical properties are tested per the ordered grade: Q235B/S235JR yield ≥ 235 MPa, tensile 370–500 MPa; Q355B/S355JR yield ≥ 355 MPa, tensile 470–630 MPa. Where the design code requires toughness, specify S355J2 or Q355D so Charpy impact tests are performed at −20 °C and reported on the EN 10204 3.1 certificate.

11. Packing, Shipping & Delivery

Unequal angles are bundled in 2–5 tonne packs, strapped with steel bands, and loaded into 20 ft or 40 ft containers or break-bulk holds at Tianjin Port. Long 12 m sections ship on flat-rack containers where the length mix requires it; we always confirm the most economical stowage plan before loading. Standard export documentation — commercial invoice, packing list, bill of lading, certificate of origin, and EN 10204 3.1 mill test certificates — is provided with every shipment.

Typical transit times: 3–4 weeks to the Middle East (Jebel Ali), 4–6 weeks to East and West Africa (Mombasa, Lagos), 4–5 weeks to Europe, and 3–5 weeks to North America. For full-project shipping details, read our international shipping and installation guide.

12. Unequal Angle FAQ

Q: What are the standard unequal angle sizes?
A: Standard sizes run from 30 × 20 × 3 mm to 200 × 150 × 18 mm, with common series such as 40 × 25, 50 × 30, 60 × 40, 75 × 50, 100 × 63, 100 × 75, 125 × 80, 150 × 100, and 160 × 100 in multiple thicknesses. Standard lengths are 6 m and 12 m.

Q: How much do unequal angles cost in 2026?
A: In 2026, Q235B/S235JR unequal angles run roughly USD 530–630 per tonne FOB China, Q355B/S355JR USD 570–690 per tonne, and hot-dip galvanized sections USD 790–960 per tonne. Non-standard sizes carry a small premium.

Q: How do I calculate the weight of an unequal angle?
A: Theoretical weight = (long leg + short leg − thickness) × thickness × 0.00785 kg/m. For example, a 100 × 63 × 8 unequal angle weighs about 9.73 kg/m.

Q: Which standard are unequal angles made to?
A: Dimensions follow EN 10056-1/2, GB/T 706, ASTM A6/A36, or JIS G 3192; grades follow EN 10025-2, GB/T 1591, ASTM A36/A572, or JIS G 3101. We produce to the standard you specify.

Q: What is the difference between unequal and equal angles?
A: Unequal angles have two legs of different lengths and higher stiffness in one direction; equal angles have identical legs and symmetric behaviour. Unequal angles suit stair stringers and edge beams, equal angles suit bracing and connections. See our equal angles page.

Q: Can unequal angles be galvanized?
A: Yes — hot-dip galvanizing to ISO 1461 with typical coating thickness 70–85 µm is available, including coating after fabrication so holes and cut ends are protected.

Q: Are non-standard unequal angle sizes available?
A: Yes. Combinations outside the standard series can be rolled to order or sourced from partner mills; lead time is typically 4–6 weeks and minimum quantity 10 tonnes.

Q: Do you provide mill test certificates?
A: Yes — every batch ships with EN 10204 3.1 mill test certificates showing chemical composition and mechanical properties, accepted by inspectors and third-party agencies.

Q: How do I get an unequal angle quotation?
A: Email your size, length, quantity, and destination port to paul@sinoeaststeel.com or message us on WhatsApp — you will receive an itemized FOB/CIF quotation within 48 hours.

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