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Designation or codes of steel members

From Draftsperson.net

By Allan

Are you looking to find what the UB means in a 310UB40, how about CT in a 155CT79 steel columns? The table below outlines the commonly used designations for steel members in Australia and New Zealand.

Section type Material standard Abbreviation Typical example of designation
Welded beam AS/NZS 3679.2 WB 700WB115, 1200WB455
Welded column AS/NZS 3679.2 WC 350WC197, 500WC440
New Zealand welded sections NZS 3404 SWB, SWC, LB,


700SWB115, 350SWC197, 600LB60,


Universal beam AS/NZS 3679.1 UB 150UB14.0, 610UB125
Universal column AS/NZS 3679.1 UC 100UC14.8. 310UC158
Tee cut from UB AS/NZS 3679.1 BT 75BT7.0, 305BT62.5
Tee cut from UC AS/NZS 3679.1 CT 50CT7.4, 155CT79.0
Taper flange beams AS/NZS 3679.1 TFB 100TFB, 125TFB
Parallel flange channels AS/NZS 3679.1 PFC 150PFC, 125TFC
Taper flange channels AS/NZS 3679.1 TFC 75TFC, 125TFC
Equal angles AS/NZS 3679.1 EA 25×25×6EA, 200×200×26EA
Unequal angles AS/NZS 3679.1 UA 65×50×5UA, 150×100×12UA
Flat bar AS/NZS 3679.1 FL 20×3 FL, 150×50 FL, 300×12 FL
Round bar AS/NZS 3679.1 ROD or RD 16 DIA ROD or 100 RD
Square bar AS/NZS 3679.1 SQ 10 SQ, 40 SQ
Plate AS/NZS 3678 PLATE or PL 250×150×16 PLATE
Circular hollow sections AS 1163 CHS 13.5×2.3CHS, 610.0×12.7CHS
Rectangular hollow sections AS 1163 RHS 50×20×1.6RHS, 250×150×9.0RHS
Square hollow sections AS 1163 SHS 20×20×1.6SHS, 250×250×9.0SHS
Cold-formed purlins and girts AS 1397 Z or C

Z10010, Z35030 C10010, C35030

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