DOCUMENT CODE: TS 1-08

EDITION: I

PAGE: 1 of 10

QUALITY MANAGEMENT SYSTEM CONFIDENTIALITY:p.t. STATUS (COPY NO.): AUTHOR : Aleksej Ermolaev, Manager of Quality Management Department SIGNATURE:

CONTROLED BY: Aleksej Ermolaev, Representative of Quality Management SIGNATURE:

APPROVED BY :Bojan Zeevi, Zamenik GD za proizvodnju SIGNATURE:

DATE:. 10.04. 2008. SUPERIOR DOCUMENT: P-05

Technical (construction) specification of the steel rebars and plain bars for the reinforcement of concrete

of the Metalfer Steel Mill production TS 1-08

CHANGE NO.: APPROVED BY: DATE CHANGE NO.: APPROVED BY: DATE: 1 A.Ermolaev 20.08.2008 2 A.Ermolaev 29.12.2008 3 I. Romandi 09.12.2010

1. General demands Specification covers weldable steel rebars and wire rod for concrete armouring, produced in accor-dance with following standards: - B500B Acc. to SRPS EN 10080, grade B500A (rib like B500B), - B500B Acc. to BS 4449-2005, - B500B Acc. to DIN 488-2009, - PC 52 Acc. to STAS 438/1-89; OB37 Acc. to STAS 438/1-89, - B60.50 Acc. to MSZ 339-1987. It can be according to other standards if the customer wishes so, and the technical possibilities of Metalfer Steel Mill allow it. When negotiating, the rebars must be defined in single-value, like the following example shows: Example of the mark: "Rebar 14x12 000 SRPS EN 10080 Grade B500B".

1.1. Construction and technical accordance 95% of the produced rebars must be in accordance with this specification. Production is performed according to technical documentation developed and approved by Metalfer Steel Mill. For data that are not mentioned in this specification (like dimensions, tolerance and marks), rebar production standard gives the data. 1.2. Production range 1.2.1. Nominal standard diameters of the rebar can be: 8, 10, 12, 14, 16, 18, 20, 22, 25, 28 and 32. Other diameters can be produced if the customer requires. 1.2.2. Standard length is 12m, but shorter rebars can be delivered if the customer requires. 1.3. Terms and definitions Terms and definitions, such as: chemical composition, sampling, retesting, performance, dimensions, weight per meter, tolerance, surface geometry, accordance determination, methods of examination and identification, are in accordance with B500B Acc. to SRPS EN 10080; B500B Acc. to BS 4449:2005; B500B Acc. to DIN 488-1:2009; B60.50 Acc. to MSZ 339:1987; PC 52 Acc. to STAS 438/1-89; OB 37 Acc. to STAS 438/1-89.

2. Appearance of the steel rebar

Image 1 Geometric shape of the steel rib B500B, B500A, 460B

Image 3 Geometric shape of the steel rib B 60.50 according to MSZ 339-87

PC 52 according to STAS 438/1-89

B500B according DIN 488

Geometry profile according to DIN 488:2009

Cross section

area

Nominal weght

T-Rib Width TW

(mm)

T-Rib Gap

G (mm)

L-Rib Width

LW (mm)

Relative rib area

Ribs angle

Size (mm)

Tolerance (mm)

Ovality (mm) cm2 Kg/m Min Max

A/2 min

A/2 max Up to Min Max Max Min Max Max Fr* min 0

8 +/-0,3 0,6 0,503 0,395 -6,0 +6,0 0,24 1,2 0,8 3,2 9,6 2,0 0,25 1,2 1,1 0,040 (0,045)* 35-75

10 0,785 0,617 -4,5 +4,5 0,30 1,5 1 4,0 12,0 2,5 0,30 1,5 1,4 0,040 (0,045)* 35-75

12 1,13 0,888 -4,5 +4,5 0,36 1,8 1,2 4,8 14,4 3,0 0,35 1,8 1,7 0,040 (0,045)* 35-75

14 1,54 1,21 -4,5 +4,5 0,42 2,1 1,4 5,6 16,8 3,5 0,45 2,1 1,8 0,056 35-75

16 2,01 1,58 -4,5 +4,5 0,48 2,4 1,6 6,4 19,2 4,00 0,50 2,4 2,0 0,056 35-75

18 2,54 1,99 -4,5 +4,5 0,54 2,7 1,8 7,2 21,6 4,5 0,55 2,7 2,2 0,056 35-75

20 3,14 2,47 -4,5 +4,5 0,60 3,0 2 8,0 24,0 5,0 0,65 3,0 2,5 0,056 35-75

22 3,80 2,98 -4,5 +4,5 0,66 3,3 2,2 8,8 26,4 5,5 0,70 3,3 2,7 0,056 35-75

25 4,91 3,85 -4,5 +4,5 0,75 3,8 2,5 10,0 30,0 6,25 0,80 3,7 3,1 0,056 35-75

28 6,16 4,83 -4,5 +4,5 0,84 4,2 2,8 11,2 33,6 7,0 0,85 4,2 3,5 0,056 35-75

32 8,04 6,31 -4,5 +4,5 0,96 4,8 3,2 12,8 38,4 8,0 0,95 4,8 4 0,056 35-75

Weight deviation +6/-4% according to DIN 488-2009* - Fr for B500B according to DIN 488 - 2009

3. Bar dimensions with tolerances and weight per meter of the length B500B according SRPS EN 10080

+0,5/-0,8 0,13

T-Rib Heigt

TH (mm) T-Rib Spacing

C (mm)

L-Rib Hight

LH (mm)Diameter, tolerances and ovality (plain bars)

Weight deviation,

U.W%

+0,3/-0,5 0,8

4. Chemical composition and mechanical properties Mechanical examinations are performed at universal test machine MUT-E 1st class according to standard EN ISO 15630-1: a) yield strength (YS) Re (MPa, N/mm2); b) tensile strength (TS) Rm (MPa, N/mm2); c) rate (R)Rm/ Re; d) percent of the total elongation at maximum force (EMF) Agt (%) d) elongation after fracture - A5 (%)

C Mn Si S P Cr Ni Cu N Ceq YS TS YS/TS A5 Agtmin 0,14 0,5 0,10 0,28 500 1,05 2,5max 0,22 0,8 0,30 0,050 0,050 0,30 0,30 0,80 0,012 0,50min 0,14 0,5 0,10 0,28 500 1,08 5,0max 0,22 0,8 0,30 0,050 0,050 0,30 0,30 0,80 0,012 0,50min 0,14 0,5 0,10 0,28 460 1,05 12 2,5max 0,22 0,8 0,30 0,050 0,050 0,30 0,30 0,80 0,012 0,50min 0,14 0,5 0,10 0,28 460 1,08 14 5,0max 0,22 0,8 0,30 0,050 0,050 0,30 0,30 0,80 0,012 0,50min 0,14 0,5 0,10 0,28 500 1,05 10max 0,22 0,8 0,30 0,050 0,050 0,30 0,30 0,60 0,012 0,50min 0,14 0,5 0,10 0,28 500 1,08 10max 0,22 0,8 0,30 0,050 0,050 0,30 0,30 0,60 0,012 0,50min 0,14 0,35 255 360 25max 0,23 0,75 0,07 0,045 0,045 0,30 0,30min 0,14 0,40 355 510 20max 0,22 1,6 0,55 0,045 0,045 0,30 0,30min 0,14 0,5 490 590 18max 0,21 1,5 0,60 0,050 0,050 0,30 0,30

BS 4449:1997 460B

DIN 488:2009

460A

B500A

B500B

MSZ 339-87

STAS 438/1-89

OB 37 1800 - 0,5d

PC 52

Standard Class Chemical composition

SRPS EN 10080

1800 - 3d

B 60.50 1800 - 3d

Mechanical propertiesBending

B500A

B500B

5d 16 mm 8d >16 25 mm

10d > 25 mm

4d 16 mm 7d >16 mm

5d 16 mm 8d > 16 28 mm 10d > 28 32 mm

Ceq = C + Mn/6 + (Cr+Mo+V)/5 + (Cu+Ni)/15 Notes:

1) It is allowed to cross over maximal value of C for 0,03% if the value of Ceq is decreased in 0,02 per weight (this refers only for standard BS 4449:2005, 1997)

2) Higher content of nitrogen is allowed if sufficient amounts of nitrogen-bending elements are present. 5. Concrete steel is produced in a shape of rebar according to: TP 1-1(Heating the billets inside the furnace), TP 1-2 (Plans of billet input), TP 1-3 (Monitoring during rolling), TP 1-4 (Cooling the billets with water using Tempcore technology), TP 1-5 (Cutting, controling and packing). Steel OB 37 is produced without water cooling.

6. Packing into bundles and marking the bundle

Rebars are tied in steel band into the bundles of 4t or 2,5 t (+/-5%). In these cases, the steel band is used. Its diameters are 0,8 x 31,75 mm and the tension strength is m=1000 N/mm2. Each bundle is tied in 5 places in distance od 2,5m and 1m from its end. Soft anneal string is used for lifting the bundle. Diameter of the string is 4 6mm, has 4 connections and the tension strength is m=360 N/mm2. Also, every bundle has a tagged waterproof label with the data shown in the table. Label is fill in by a printer.

DESCRIPTION: HOT ROLLED REBAR NAZIV: TOPLO VALJANE IPKE

PRODUCED IN SERBIA PROIZVEDENO U SRBIJI

PRODUCER: METALFER STEEL MILL D.O.O. PROIZVOA: METALFER STEEL MILL D.O.O.

SIZE (MM): DIMENZIJA (MM):

LENGTH (M): DUINA (M):

QUALITY: KVALITET:

BUNDLE NET WEIGHT (KG): MASA BUNTA NETO (KG):

HEAT No: ARA Br.:

BUNDLE No.: BUNT Br.:

PRODUCTION DATE: DATUM PROIZVODNJE:

SHIFT: SMENA:

BUYER: KUPAC:

CONTRACT UGOVOR Br.

CLASS: KLASA:

7. DEFECTS OF THE FINAL PRODUCT 7.1 Defects of the final product and the identification of the nonconforming product are described in annex of file KP 1-01/01

DOCUMENT CODE: KP-1-01/01

EDITION: 1

PAGE: 1 of 1

QUALITY MANAGEMENT SYSTEM CONFIDENTIALITY: P.T.

STATUS (COPY NO.):

AUTHOR : Manager of Quality Control Dept. A. Ermolaev CONTROLED BY:Representative of Quality Management A. Ermolaev

APPROVED BY : Deputy of General Manager for production B. Zeevi DATE: 03.09.2008 SUPERIOR DOCUMENT: KP-1-01

LIST OF FINAL PRODUCT DEFECTS (II CLASS)

DEFECT CODE

(NUMBER) TYPE OF DEFECT ALLOWANCE

1 SHORT OR LONG BARS 100 mm OF NOMINAL LENGHT

2 CAMBER MAXIMUM 0,6%

PER MEASURING LENGHT (6 mm per 1 meter)

3 MECHANICAL PROPERTIES ARE NOT ACCORDING TO STANDARD MECHANICAL PROPERTIES MUST BE ACCORDING TO STANDARDS

4 NOMINAL WEIGHT VARIATION PER METER OF LENGHT

6 % for d8mm SRPS EN 10080 4,5 % (SRPS EN 10080; BS 449; STAS 438/1-89) + 6/-4 % DIN 488:2009 4 % MSZ 339

5

BAR SURFACE DOESNT MATCH THE STANDARD (LOW OR HIGH RIB, RELATIVE SURFACE Fr OF THE RIB IS NOT SUITABLE)

According to: SRPS EN 10080, BS 4449 Fr 0,040 min. for d12mm Fr 0,056 min. for > d12mm According to: DIN 488: Fr 0,045 min. for d8mm Fr 0,052 min. for d10mm Fr 0,056 min. for d12mm

6 ASPERITY OF BAR SURFACE (NOT A FINE APPEARANCE)

10 TONS MAX CAN BE DONE TO THE CHANGE OF CALIBRE

7 NOMINAL DIMENSION DEVIATION (FOR PLAIN BAR) +0,3/-0,5 mm,

OVALTY - 0,8 mm MAXIMUM

Quality Management System Technician notes second category on scale and the bar defects. If the bundle is second category, old lable is removed and new one is placed. New label must contain second category detail and one or more listed defects specified in brackets.

CHANGE NO.: APPROVED BY: DATE CHANGE NO.: APPROVED BY: DATE: 1 A. Ermolaev 18.09.2008 2 A. Ermolaev 29.12.2008 3 I. Romandi 09.12.2010

Marking of finished bar

Marking of finished bar - Standard MSZ 339-1987