PRODUCTS HOT ROLLED REINFORCING BARS WIDE ROD BILLET FROM CONTINUOUS CASTING WELDED WIRE MESH

INDEX 01. HOT ROLLED REINFORCING BARS PAGE 4 02. WIRE ROD PAGE 6 03. BILLET FROM CONTINUOUS CASTING PAGE 8 04. WELDED WIRE MESH PAGE 10

HOT ROLLED REINFORCING BARS ADA 500 NR DESCRIPTION Hot rolled and weldable ribbed steel with a characteristic yield strength of 500 Mpa. Diameters In bars: 8. 10. 12. 14. 16. 20. 25. 32. mm / In coils: 8. 10. 12. 14. 16. mm. EQUIVALENCES WITH DIFFERENT GRADES AND STANDARDS COUNTRY STANDARD GRADE Portugal LNEC E 450 A 500NR Spain UNE 35068 B 500S France NF A 35080-1 B 500B United Kingdom BS 4449 B 500B Germany DIN 488 B 500B EQUIVALENCES WITH DIFFERENT GRADES AND STANDARDS ANALYSIS IN CHEMICAL COMPOSITION % MAX C P S N Cu CEV Cast 0.22 0.050 0.050 0.012 0.80 0.50 Product 0.24 0.055 0.055 0.014 0.80 0.52 EQUIVALENCES WITH DIFFERENT GRADES AND STANDARDS COUNTRY STANDARD GRADE Re Yield Strength nominal (Mpa) Rm Tensile Strength nominal (Mpa) Rm/Re Ratio nominal Agt Elongation nominal (%) ADA 500NR 500 550 1.08 5 Portugal LNEC E 500 A 500NR 500 550 1.08 5 Spain UNE 36068 B 500S 500 550 1.08 5 France NF A 35080 B 500B 500-1.08 5 UK BS 4449 B 500B 500-1.08 5 Germany DIN 488 B 500B 500-1.08 5 MARKING Identification marking of ADA Aceria de Angola is: 0 / 9 / 51-0: read start - 9: Country outside Europe - 51: Manufacturer BAR PACKAGING Package length: 6 to 15 meters. Package weight: 1.000 to 2.500 kilograms. LABELING Each package or coil is labeled with a label where there is all relevant information of the product. QUALITY MANAGEMENT SYSTEM The ribbed bar produced in ADA is produced under the requirements of the international standard ISO 9001. COIL 2015 ADA - ACERIA DE ANGOLA - ALL RIGHTS RESERVED Page 5

WIRE ROD RAW MATERIAL DESCRIPTION Raw material for cold drawing and cold rolling. Diameters: 5.5 6.0 6.5 7.0 8.0 9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 20.0 22.0 GRADES AND STANDARDS CHEMICAL COMPOSITION (%) STANDARD GRADE C MN SI P S ASTM A29 SAE 1008 0.10 0.30-0.50 0.025 0.030 0.045 ASTM A29 SAE 1010 0.08-0.13 0.30-0.60 0.025 0.030 0.045 EN 10016-2 C9D 0.07-0.10 0.35-0.50 0.025 0.030 0.045 COIL DIMENSIONS AND WEIGTH External diameter D(ex): 1.250 mm. Internal diameter D(in): 900 mm. Length L: 500 mm. Weight - 750 kilograms (aprox.) LABELING Each coil has a label with the following information: Diameter. Heat number. Grade and Standard. QUALITY MANAGEMENT SYSTEM The wire rod produced in ADA Aceria de Angola is produced under the requirements of the international standard ISO 9001. 2015 ADA - ACERIA DE ANGOLA - ALL RIGHTS RESERVED Page 7

BILLET FROM CONTINUOUS CASTING STEEL LONG PRODUCTS DESCRIPTION Billet is the semiproduct to produce steel long products. CHEMICAL COMPOSITION CHEMICAL COMPOSITION (%) QUALITY C MN SI P S Rebar 0.22 0.60-0.90 0.25 0.050 0.050 SAE 1008 0.10 0.30-0.50 0.025 0.030 0.045 SAE 1010 0.08-0.13 0.30-0.60 0.025 0.030 0.045 C9D 0.07-0.10 0.35-0.50 0.025 0.030 0.045 BILLET DIMENSION AND WEIGHT Square: 130 x 130 mm Length: 6 meters (tolerance +/- 100mm) Weight: 1.780 kg (aprox.) QUALITY MANAGEMENT SYSTEM The billet produced in ADA Aceria de Angola is produced under the requirements of the international standard ISO 9001 2015 ADA - ACERIA DE ANGOLA - ALL RIGHTS RESERVED Page 9

WELDED WIRE MESH CONCRETE REINFORCEMENT DESCRIPTION Welded wire mesh used for concrete reinforcement as walls and slabs TYPES OF WELDED MESH Welded mesh produce in roll format and spools with cold rolled wires (Mesh wide: 2500 mm Maximum length: 50 m) Wire diameter Distance Wire Section between two numbers per meter Line Cross Type of wire Type of mesh Line Cross Line Cross Line Cross Weight per square meter Rolled mesh weigth Rolled mesh length (mm) (mm) (mm) (mm) (nº) (nº) (cm2/m) (cm2/m) (kg/m2) (kg) (m) 4.0 4.0 Cold Ribbed Roll 100 100 24 500 1.26 1.26 1.93 242 50 4.0 4.0 Cold Ribbed Roll 100 150 24 333 1.26 0.84 1.60 201 50 4.0 4.0 Cold Ribbed Roll 100 200 24 250 1.26 0.63 1.44 180 50 4.0 4.0 Cold Ribbed Roll 100 250 24 200 1.26 0.50 1.34 168 50 4.0 4.0 Cold Ribbed Roll 150 150 16 333 0.84 0.84 1.29 161 50 4.0 4.0 Cold Ribbed Roll 150 200 16 250 0.84 0.63 1.12 141 50 4.0 4.0 Cold Ribbed Roll 150 250 16 200 0.84 0.50 1.03 128 50 4.0 4.0 Cold Ribbed Roll 200 200 12 250 0.63 0.63 0.97 121 50 4.0 4.0 Cold Ribbed Roll 200 250 12 200 0.63 0.50 0.87 109 50 4.5 4.5 Cold Ribbed Roll 100 100 24 500 1.59 1.59 2.45 306 50 4.5 4.5 Cold Ribbed Roll 100 150 24 328 1.59 1.06 2.03 250 49 4.5 4.5 Cold Ribbed Roll 100 200 24 250 1.59 0.79 1.82 228 50 4.5 4.5 Cold Ribbed Roll 100 250 24 200 1.59 0.64 1.70 212 50 4.5 4.5 Cold Ribbed Roll 150 150 16 333 1.06 1.06 1.63 204 50 4.5 4.5 Cold Ribbed Roll 150 200 16 250 1.06 0.79 1.42 178 50 4.5 4.5 Cold Ribbed Roll 150 250 16 200 1.06 0.64 1.30 162 50 4.5 4.5 Cold Ribbed Roll 200 200 12 250 0.79 0.79 1.22 153 50 4.5 4.5 Cold Ribbed Roll 200 250 12 200 0.79 0.64 1.10 137 50 5.0 5.0 Cold Ribbed Roll 100 100 24 500 1.96 1.96 3.02 378 50 5.0 5.0 Cold Ribbed Roll 100 150 24 333 1.96 1.31 2.51 313 50 5.0 5.0 Cold Ribbed Roll 100 200 24 250 1.96 0.98 2.25 281 50 5.0 5.0 Cold Ribbed Roll 100 250 24 200 1.96 0.79 2.10 262 50 5.0 5.0 Cold Ribbed Roll 150 150 16 333 1.31 1.31 2.01 252 50 5.0 5.0 Cold Ribbed Roll 150 200 16 250 1.31 0.98 1.76 220 50 5.0 5.0 Cold Ribbed Roll 150 250 16 200 1.31 0.79 1.60 200 50 5.0 5.0 Cold Ribbed Roll 200 200 12 250 0.98 0.98 1.51 189 50 5.0 5.0 Cold Ribbed Roll 200 250 12 200 0.98 0.79 1.36 170 50 2015 ADA - ACERIA DE ANGOLA - ALL RIGHTS RESERVED Page 11

WELDED WIRE MESH CONCRETE REINFORCEMENT TYPES OF WELDED MESH Welded mesh produce in sheets format with cold rolled wires (Mesh wide: 2500 mm Sheet length: 6000 mm) Wire diameter Distance Section Wire numbers between two per meter Line Cross Type of wire Type of mesh Line Cross Line Cross Line Cross Weight per square meter (mm) (mm) (mm) (mm) (nº) (nº) (cm2/m) (cm2/m) (kg/m2) 5.0 5.0 Cold Ribbed Sheet 100 100 24 60 1.96 1.96 3.02 5.0 5.0 Cold Ribbed Sheet 100 150 24 40 1.96 1.31 2.51 5.0 5.0 Cold Ribbed Sheet 100 200 24 30 1.96 0.98 2.25 5.0 5.0 Cold Ribbed Sheet 100 250 24 24 1.96 0.79 2.10 5.0 5.0 Cold Ribbed Sheet 150 150 16 40 1.31 1.31 2.01 5.0 5.0 Cold Ribbed Sheet 150 200 16 30 1.31 0.98 1.76 5.0 5.0 Cold Ribbed Sheet 150 250 16 24 1.31 0.79 1.60 5.0 5.0 Cold Ribbed Sheet 200 200 12 30 0.98 0.98 1.51 5.0 5.0 Cold Ribbed Sheet 200 250 12 24 0.98 0.79 1.36 6.0 6.0 Cold Ribbed Sheet 100 100 24 60 2.83 2.83 4.35 6.0 6.0 Cold Ribbed Sheet 100 150 24 40 2.83 1.88 3.61 6.0 6.0 Cold Ribbed Sheet 100 200 24 30 2.83 1.41 3.24 6.0 6.0 Cold Ribbed Sheet 100 250 24 24 2.83 1.13 3.02 6.0 6.0 Cold Ribbed Sheet 150 150 16 40 1.88 1.88 2.90 6.0 6.0 Cold Ribbed Sheet 150 200 16 30 1.88 1.41 2.53 6.0 6.0 Cold Ribbed Sheet 150 250 16 24 1.88 1.13 2.31 6.0 6.0 Cold Ribbed Sheet 200 200 12 30 1.41 1.41 2.18 6.0 6.0 Cold Ribbed Sheet 200 250 12 24 1.41 1.13 1.95 2015 ADA - ACERIA DE ANGOLA - ALL RIGHTS RESERVED Page 12

WELDED WIRE MESH CONCRETE REINFORCEMENT TYPES OF WELDED MESH Welded mesh produce in sheets format with ADA 500NR wires (Mesh wide: 2500 mm Sheet length: 6000 mm) Wire diameter Distance Section Wire numbers between two per meter Line Cross Type of wire Type of mesh Line Cross Line Cross Line Cross Weight per square meter (mm) (mm) (mm) (mm) (nº) (nº) (cm2/m) (cm2/m) (kg/m2) 8.0 8.0 Hot Ribbed Sheet 100 100 24 60 5.02 5.02 7.73 8.0 8.0 Hot Ribbed Sheet 100 150 24 40 5.02 3.35 6.42 8.0 8.0 Hot Ribbed Sheet 100 200 24 30 5.02 2.51 5.76 8.0 8.0 Hot Ribbed Sheet 100 250 24 24 5.02 2.01 5.37 8.0 8.0 Hot Ribbed Sheet 150 150 16 40 3.35 3.35 5.16 8.0 8.0 Hot Ribbed Sheet 150 200 16 30 3.35 2.51 4.50 8.0 8.0 Hot Ribbed Sheet 150 250 16 24 3.35 2.01 4.10 8.0 8.0 Hot Ribbed Sheet 200 200 12 30 2.51 2.51 3.87 8.0 8.0 Hot Ribbed Sheet 200 250 12 24 2.51 2.01 3.47 10.0 10.0 Hot Ribbed Sheet 150 150 16 40 5.23 5.23 8.06 10.0 10.0 Hot Ribbed Sheet 150 200 16 30 5.23 3.93 7.03 10.0 10.0 Hot Ribbed Sheet 150 250 16 24 5.23 3.14 6.41 10.0 10.0 Hot Ribbed Sheet 200 200 12 30 3.93 3.93 6.04 10.0 10.0 Hot Ribbed Sheet 200 250 12 24 3.93 3.14 5.43 MECHANICAL PROPERTIES OF THE WELDED MESH WIRES WIRE DIAMETER STANDARD GRADE RE YIELD STRENGTH NOMINAL (MPA) RM/RATIO NOMINAL AGT ELONGATION NOMINAL (%) 4.0 4.5 5.0 6.0 EN 10080 B 500A 500 1.05 2.5 8.0 10.0 ADA 500NR 500 1.08 5 LABELING Each package or coil is labeled with a label where there is all relevant information of the product. QUALITY MANAGEMENT SYSTEM The WELDED MESH produced in ADA Aceria de Angola is produced under the requirements of the international standard ISO 9001. 2015 ADA - ACERIA DE ANGOLA - ALL RIGHTS RESERVED Page 13

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