Structural steel sections
Free DWG libraries for Structural steel sections. Narrow by standard or type on the left, or search every symbol by name.
Symbol names are in English. Search by name (“gate valve”), by designation (“IPE 200”, “DN100”, “M8”) or by block name (“PID_VALVE_GATE”).
5 libraries
AISC · 352 symbols · Parts and dimensions
AISC HSS and steel pipe
Rectangular, square and round HSS and STD, XS and XXS pipe at real size in inches, to the AISC shape tables, with weight per foot and area as attributes.
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AISC · 339 symbols · Parts and dimensions
AISC wide-flange and I-beam shapes
W, HP and S shapes at real size in inches, to the AISC shape tables, with weight per foot and area as attributes.
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EN 10210-2 · 262 symbols · Parts and dimensions
Steel hollow sections
Square, rectangular and circular hollow sections to EN 10210-2, at real size with corner radii, with mass and area as attributes.
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EN 10365 · 172 symbols · Parts and dimensions
European steel sections
IPE, HEA, HEB and HEM beams, UPN channels and equal and unequal angles, at real size to EN 10365 and EN 10056-1, with mass and area as attributes.
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AISC · 169 symbols · Parts and dimensions
AISC channels and angles
C shapes and equal-leg and unequal-leg L angles at real size in inches, to the AISC shape tables, with weight per foot and area as attributes.
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Browse the libraries
By purpose
By industry
By standard
- ISO: ISO 10628-2, ISO metric, ISO 1219-1, ISO 1101, ISO 14084-2, ISO 14617
- IEC: Electrical symbols (IEC 60617 style), IEC 61131-3, Power system single-line symbols
- ISA: ISA 5.1, ISA 5.5, ISA 5.3
- IEEE / ANSI: ANSI/IEEE 315
- ASME: ASME B16.5, ASME B16.9
- EN / DIN: EN 10365, EN 10210-2, EN 1092-1
- AISC: AISC wide-flange and I-beam shapes, AISC channels and angles, AISC HSS and steel pipe
- Industry practice: Architectural plan symbols, HVAC symbols, Drawing annotation symbols, Home furniture, Landscape plan symbols, Plumbing and fire protection symbols, Entourage symbols, Drawing marks, site, services and accessibility symbols, Stairs, walls, roofs and structure symbols, Furniture plan symbols, Bathroom and kitchen symbols, Door and window symbols, Building electrical plan symbols, Metallurgy and rolling mill symbols, Water and wastewater treatment symbols, Process equipment symbols
Questions about the symbol libraries
- Are the DWG symbol libraries free?
- Yes. Every library on this page is a free download: one ZIP per DWG file, with a preview of every symbol before you download.
- How do I find a symbol quickly?
- Type its name ("gate valve"), a designation ("IPE 200", "DN100", "M8") or a block name into the search box. The filters on the left narrow the libraries by industry, purpose, standard and type, and the search works inside whatever the filters leave. Symbol names are in English.
- Which standards do the libraries follow?
- ISO, IEC, ISA, IEEE / ANSI, ASME, EN / DIN and AISC are covered, for example IEC 60617, ISA 5.1, ISO 10628-2, ISO 1219-1, ISO 1101 and ISO 14617. Where no standard exists (architecture, HVAC, process equipment, water treatment, metallurgy) the libraries follow common practice of the trade and say so on their page.
- Are the symbols certified copies of the standards?
- No. The symbols are our own drawings after the common forms of those standards, not copies of the standards and not certified for conformance. Check the shapes against your own copy of the standard when a client requires strict compliance.
- What is in a block besides the drawing?
- Every block carries attributes: a visible tag and, hidden, the data a schedule or equipment list needs, such as service, size, rating, manufacturer and model. Plan symbols are drawn at real size in millimetres; schematic symbols at their plotted size.
- What if the symbol I need is missing?
- Tell us which symbol and which standard or trade it comes from on the support page. Requests from searches that find nothing decide what is drawn next.