Jis g 3191 1966 shape, dimension, weight and tolerance for hot rolled steel bar and bar in coil

JAPANESE ~ INDUSTRIAL STANDARD Shape, Dimension, Weight) and Tolerance for Hot Rolled Steel Bar| and Bar-i-in-“Goi JIS G@ 31 o1-—- LS Translated and Published by Japanese Standards Printed in Japan Association ee ` JAPANESE Shape, INDUSTRIAL Dimension, for Hot Rolled Weight Steel Bar STANDARD and JIS Tolerance G and Bar-in-Coil 3191-1966 (Reaffirmed: 1988) Scope 1.1 This standard specifies ppearance, shape and allowable re manufactured by hot rolling 1.2 The application aanufacture standards of this dimension, limit weight and tolerance thereto of steel standard shall be bar and specified thereon as well bar-in-coil in the which as respective Definition “The definition follows: - The steel of steel bar shall bar and bar-in-coil be defined as the so called steel „xa and supplied by being cut into a prescribed which length in this is hot-rolled 2.2 The bar-in-coil shall be defined as the steel which orm and supplied by being wound into a coil shape Expression 3.1 The of steel ide or width across flats, bar shall be expressed into is hot-rolled in mm and in m for the length 3.2 The dimension of bar-in-coil ide or width across flats * shall be expressed for in mm the for the a bar into a bar thickness, Dimension Table Unit: shall comply mm 10 11 12 13 (14) 16 (18) 19 20 22 24 25 (27) 28 30 32 (33) 36 38 (39) 42 (45) 46 48 50 (52) 55 56 60 64 65 (68) 70 T5 80 85 90 95 100 110 120 130 140 150 180 200 160 Remarks be thickness, The standard diameter of round steel (inclusive of bar-in-coil) ~« Table shall of Dimension dimension Standard standard It is desirable that the standard diameter other enclosed in parentheses shall apply thereto than those 2, The Steel not less than mm standard therein diameter and to the shall apply to the round bar-in-coil not more than 32 mm being therein G3191-1966 4.2 The standard length of steel bar shall comply with Table 2, Table2 Unit: 3.5, 4.0, ov Dimensional 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 8.0, 9.0, m 10.0 Tolerance 5.1 The steel bar and bar-in-coil shall have the diametrical variation as well as the tolerance on the diameter, side or width across flats complying with Table Table i ter, side Diameter, side o across flats Under or width 16 (4) The diametrical between tolerance variation the maximum on the minimum of steel Length and (1) bar values of the diameter, sectional area shall comply with Table side 4 Tolerance under 1d Add Over variation Not more than 70 % of total tolerance range of diameter, side or width across flats, flats in the same length mm shall be denoted by the difference and Table 7m i+ The Unit: Diametrical +0,4 +0,5 1.8% or width across 5.2 Tolerance 16 to 28, excl, 28 and over Note 3 mm + side 7m to the tolerance in the increment fractions mm upper line for on the every of m length or the Weight 6.1 and The weight of steel bar shall comply shall be expressed in kg with the actually scaled weight Provided as a rule with the calculated weight that the weight of bar-in-coil shall comply 6.2 The calculating method for the weight of steel bar shall comply with Table however, the dimension in this case shall be of the expressed dimension 6.3 The cross-sectional area and unit weight to the standard diameter of the round steel which was found in compliance with 6.2 shall comply with Table Appended 5, Table quence Calculating method of calculation Number of result figures 785 (Weight of m length asic weight kg/cm2/m x1 cm2 sectional area) D2 x 0.7854 x —— Round steel -oss-sectional area cm2 where D; 100 diameter (mm) A?x-=— Square steel where 100 A: steel _ rit weight zight per Basic kg weight area Unit weight (kg/m) Length kg (m) Weight per piece number of pieces dimension kg of x " 100 | across flats (mm) x Round (cm2) off in numerical to places figures x exceeding (kg) x Total of the value of significant Round off in numerical value to places of significant figures Provided that round off those integer ‘oss weight off in numerical to places lsignificant figures width (kg/cm2/m) Cross-sectional piece B: value (mm) B“x0,8660 Hexagon | where Round side same Round 1000 kg in the value of kg off in integer value of kg a Remarks i The calculating method for the cross-sectional bar which is not specified in the comply with the agreement upon The rounding of the numerical The on tolerance of steel shall comply being specified by the purchaser, Values, with shall value Rules for Rounding off of Numerical Tolerance area above-mentioned Table with the purchaser JIS Z 8401- Weight on weight all comply with Table of steel bar in case Provided that the calculating method for tolerance shall denoted in percentage of dividing the difference between d actually scaled weight by the calculated weight the calculated weight 3191-1966 G Table Diameter, d side Under 10 mm 10 mm to 16 mm 28 mm 8, or width across flats} Tolerance +7 16 mm, to 28 mm excl Applicable to each lot (1 ton min.) of the same dimension, Provided ‘that applicable to each lot of 10 25% excl +49 and over Application [Pieces or more of pieces + 3.5% in case corresponding not suffice of number to ton 10 pieces Appearance 8.1 The steel bar and bar-in-coil shall be free from injurious defect in use Provided that the bar-in-coil is possibly inclusive of some abnormal portions because of no occasion to remove the portion including the defect in general through the inspection 8.2 facturer Incase of the steel defect grinding Provided the manu- The dimension (2) The repaired portion of steel bar shall be cleanly finished and smoothed on the boundary with the surface as it is rolled, being repaired or defect, (1) shall comply by chipping surface remove ditions in this case the bar having the injurious may with the following respective (diameter, side or width shall be not less than across flats) that the con- of steel bar after items: 95 % of the expressed dimension € ) )hw Round Steel D: Table Diameter mm [Sectional area| cm? Appended Unit weight || Diameter kg/m {Sectional area] Unit weight mm em? kg/m 15, 90 16 62 18, 10 19,64 21.24 12.5 13.0 14,2 15.4 16.7 23 76 18.7 28 27 22.2 10 2827 0.3848 0.5027 6362 0.7854 0.222 0.302 0.395 499 0.617 (45) 46 48 50 (52) " 0.9503 € 746 55 13 1.327 1.04 60 2.00 “ 12 1,131 a4) 16 1.539 2.011 Q8) 2.545 19 20 22 24 2.835 3.142 3.801 4.524 0, 888 1.21 1.58 2.23 2.47 2.98 3.55 diameter 56 24.63 64 65 32.17 33 18 25.3 26.0 x a Bì : 80 85 18 , 50, 27 56 75 90 63 62 49.9 19.3 34, " 39.5 44.5 95 4.909 3.85 95 70 88 55.6 (27) 5.726 4.49 100 110 120 78 54 95.03 113.1 61.7 9.042 6.31 130 132.7 104 @3) 36 553 10.18 6.71 7,99 150 160 176.7 201.1 254.5 139 158 200 200 314.2 247 28 30 38 (39 42 6.158 7.069 11.34 11.95 13 85 4.83 5.55 8.90 9.38 10.9 140 180 153.9 74.6 88.8 121