Steel Pipes

Kenya Standards : KS259:1998SPECIFICATIONS for BLACK & GALVANISED STEEL PIPES conforming to IS:1239 (Part 1) 1990 equivalent to BS 1387-1985Nominal Class Outside Diameter Thickness Calculated Nominal Weight Sockets Bore (NB) Min. Max. Plain End Screwed & Socketed Min. Od Min. Lth L 21.00 21.40 2.00 14 0.947 1056 0.956 1046 27.0 37.0 15 (1/2") M 21.00 21.80 2.60 12 1.21 826 1.22 820 27.0 37.0 H 21.00 21.80 3.20 10 1.44 694 1.45 690 27.0 37.0 L 26.40 26.90 2.30 13 1.38 725 1.39 719 32.5 39.0 20 (3/4") M 26.50 27.30 2.60 12 1.56 641 1.57 637 32.5 39.0 H 26.50 27.30 3.20 10 1.87 535 1.88 532 32.5 39.0 L 33.20 33.80 2.60 12 1.98 505 2.00 500 39.5 46.0 25 (1") M 33.30 34.20 3.20 10 2.41 415 2.43 412 39.5 46.0 H 33.30 34.20 4.00 8 2.93 341 2.95 339 39.5 46.0 L 41.90 42.50 2.60 12 2.54 394 2.57 389 49.0 51.0 32 (11/4") M 42.00 42.90 3.20 10 3.10 322 3.13 319 49.0 51.0 H 42.00 42.90 4.00 8 3.79 264 3.82 262 49.0 51.0 L 47.80 48.40 2.90 11 3.23 310 3.27 306 56.0 51.0 40 (11/4") M 47.90 48.80 3.20 10 3.56 281 3.60 278 56.0 51.0 H 47.90 48.80 4.00 8 4.37 229 4.41 227 56.0 51.0 L 59.60 60.20 2.90 11 4.08 245 4.15 241 68.0 60.0 50 (2") M 59.70 60.80 3.60 9 5.03 199 5.10 196 68.0 60.0 H 59.70 60.80 4.50 7 6.19 161 6.26 160 68.0 60.0 L 75.20 76.00 3.20 10 5.71 175 5.83 172 84.0 69.0 65 (2 1/2") M 75.30 76.60 3.60 9 6.42 156 6.54 153 84.0 69.0 H 75.30 76.60 4.50 7 7.93 126 8.05 124 84.0 69.0 L 87.90 88.70 3.20 10 6.72 149 6.89 145 98.0 75.0 80 (3") M 88.00 89.50 4.00 8 8.36 120 8.53 117 98.0 75.0 H 88.00 89.50 4.80 6 9.90 101 10.40 96 98.0 75.0 L 113.00 113.90 3.60 9 9.75 102 10.00 100 124.0 87.0 100 (4") M 113.00 115.00 4.50 7 12.20 82 12.50 80 124.0 87.0 H 113.00 115.00 5.40 5 14.50 69 14.80 68 124.0 87.0 125 (5") M 138.50 140.80 4.80 6 15.90 63 16.40 61 151.0 96.0 H 138.50 140.80 5.40 5 17.90 56 18.40 54 151.0 96.0 150 (6") M 163.90 166.50 4.80 6 18.90 53 19.50 51 178.0 96.0 H 163.90 166.50 5.40 5 21.30 47 21.90 46 178.0 96.0 TOLERANCES AS PER ISA. Thickness Tolerance B. Weight Tolerance C. Length 1. Light tubes + Not Limited-8% 1. Single tube (Light Series) +10%-8% Light, Medium & Heavy tubesRandom Lengths of 4 to 7 metres unless specified otherwise 2. Medium andHeavy tubes +Not Limited-10% 2. Single tubeMedium & Heavy Series

Kenya Standards : KS259:1998