Name Unit Calculation formula Calculation example Round steel wire rod kg / mw = 0.006165 × d2 Where, d is the diameter (mm) diameter of 80mm round bar, the quality per meter per meter = 0.006165 × 802kg = 39.46kg rebar kg / m W = 0.00617 × d2 Where, d is the section diameter (mm) section diameter of 12mm of the rebar, the quality per meter per meter = 0.00617x122kg = 0.89kg square steel kg / m W = 0.00785 × d2 Where, d is the side of the width (MM) side of 30mm square steel, quality per meter per meter = O. 00785 × 302kg = 7.07kg Flat steel kg / m W = 0.00785 × d × b Where, d is the side width (mm) b is thick (mm) side width 40mm, 5mm thick flat steel, Quality = O. 00785 × 40 × 5kg = 1.57kg hexagon kg / m W = 0.006798 × d2 Where, d is the distance to the edge (mm) on the side of the distance 50mm hexagonal steel, per meter mass per meter = 0.006798 × 502kg = 17kg Aniseed kg / m W = 0.006798 × d2 Where, d is the distance to the edge (mm) to the side of the 80mm away from the octagonal, per meter mass per meter Quality: 0.0065 x 802kg = 41.60kg equilateral angle kg / m W = 0.00785 × [d (2b-d) +0.215 (R2-2r2)] where b is the width of the edge, d is the thickness of the edge, R is the radius of the inner arc, r is the radius of the arc of 4mmx20mm R is 3.5 for r = 4mm × 20mm equilateral angle meter found for rice mass GB9787, r is 1.2 Mass = 0.00785 × [4 (2 × 20-4) +0.215 (3.52-2 × 1.22)] kg = 1.15kg Equilateral angle kg / mw = 0.00785 × [d (B + 6 a d) +0.215 (R2 a 2 r2)] where B is the long side width, b is the short side, Radius of the inner arc, r is the radius of the arc 30rnm × 20mm × 4mm unequal angle steel per meter mass. From GB9788 found 30x20x4 R angle of stainless steel is 3.5, r is 1.2 mass per meter = 0.00785 × [4 (30 + 20-4) +0.215 (3.52-2 × 1.22)] kg = 1.46kg groove Where h is high, b is leg length, d is waist thickness, t is mean thigh thickness, R is inner arc Radius, r is the radius of the terminal arc Seeking 80mm × 43mm × 5mm channel quality per meter. From the GB707 found in the channel t is 8, R is 8, r is 4 per meter mass = 0.00785 [80 × 5 × 12 × 8 (43-5) +0.349 (82-42)] kg = 8.04kg In the formula, h is high, b is the leg length, d is the waist thickness, t is the average leg thickness, and R is the inner leg thickness Radius of the arc, r for the arc radius of seeking 250rnm × 118mm × 10mm I-beam per meter mass. From the GB706 found in the t-shaped steel t is 13. R is 10 and r is 5 Mass = 0.00785 [250 × 10 + 2 × 13 × (118-10) +0.8584 (102-52)] kg = 42.2 kg Steel plate kg / m2 w = 7.85 × 6 In the formula, 6 is the thickness of 6mm steel plate, the quality per square meter per square meter Quality = 7.85 × 6kg = 47.1kg Steel pipe (including seamless steel pipe and welded steel pipe) kg / mw = 0.02466 × S (D-S) D is the outer diameter, s is the wall thickness of the outer diameter of 60mm, thickness 4mm seamless steel pipe, the quality per meter per meter = 0.02466 × 4 × (60-4) kg: 5.52kg