Representation method of steel specification

See Table 1-29 for specification of steel.

Table 1-29 Representation method of steel specification

Name	Specification representation method	Example
Round steel and wire rod	diameter	Round steel 10mm or 10mm
Square steel	Side length x side length	Square Steel 15mm x 15mm OR (15mm)
Hexagonal steel bar	Diameter of inscribed circle	Hexagon steel 8mm
Octagonal steel	Diameter of inscribed circle	Octagonal steel 70mm
Flat steel bar	Side width x thickness	FLAT STEEL 40mm x 20mm
Equal-leg angle steel	Side width x side width x side thickness	EQUAL ANGLE 40mm x 40mm x 3mm OR (40mm) – x3mm OR 4
Unequal angle steel	Long side width x short side width x side thickness	Unequal angle 80mm x 50mm x 6mm or 8/5
Channel steel	Height x leg width x waist thickness	Channel 50mm x 37mm x 4.5mm or 5
I beam steel	Height x leg width x waist thickness	I-bar 160mm x 88mm x 6mm or 16
rail	Nominal mass per meter length (kg)	Rail 50kg
steel plate	Thickness x Width x Length	Steel plate 10mm 1000mm 2000mm (write thickness only if length and width are not required)
steel strip	Thickness x Width	Steel strip 0.5mm x 100mm
seamless steel tube	OD x wall thickness x length	Seamless pipe 32mm x 2.5mm or 32m2.5mm3000mm
Welded steel pipe	Inch system for nominal diameter (approximate inner diameter)	Welded pipe 8mm or 1/4
Round steel wire	Diameter or wire gauge No	Wire 0.16mm or p0.16mm, or AWG gauge 34
Wire rope (round strand)	Number of strands x number of strands per strand diameter	Steel wire group 6×7-3.8mm, lay direction requirements, strength requirements, etc. shall be indicated separately