上海市長宁区娄山关路83号
新虹桥中心大厦2621室
TEL:021-31332621
FAX:021-31332684
〒200336
新虹桥中心大厦2621室
TEL:021-31332621
FAX:021-31332684
〒200336
株式会社コーシンケミカル
(本社)〒131-0032
東京都墨田区東向島3-29-6
TEL:03-3610-6377
FAX:03-3610-6378
URL:http://www.koshin-c.co.jp
(本社)〒131-0032
東京都墨田区東向島3-29-6
TEL:03-3610-6377
FAX:03-3610-6378
URL:http://www.koshin-c.co.jp
静岡営業所/島田工場
〒427-0032
静岡県島田市神座2564-566
TEL:0547-30-1561
FAX:0547-30-1560
〒427-0032
静岡県島田市神座2564-566
TEL:0547-30-1561
FAX:0547-30-1560
規格 G 番
（寸法単位＝mm）
| 呼び番号 | 太さ d2 | 太さ許容差 | 内径 d1 | 内径許容差 |
| G-25 | 3.1 | ±0.1 | 24.4 | ±0.25 |
| G-30 | 3.1 | ±0.1 | 29.4 | ±0.29 |
| G-35 | 3.1 | ±0.1 | 34.4 | ±0.33 |
| G-40 | 3.1 | ±0.1 | 39.4 | ±0.37 |
| G-45 | 3.1 | ±0.1 | 44.4 | ±0.41 |
| G-50 | 3.1 | ±0.1 | 49.4 | ±0.45 |
| G-52 | 3.1 | ±0.1 | 51.4 | ±0.47 |
| G-55 | 3.1 | ±0.1 | 54.4 | ±0.49 |
| G-58 | 3.1 | ±0.1 | 57.4 | ±0.51 |
| G-60 | 3.1 | ±0.1 | 59.4 | ±0.53 |
| G-62 | 3.1 | ±0.1 | 61.4 | ±0.54 |
| G-63 | 3.1 | ±0.1 | 62.4 | ±0.55 |
| G-64 | 3.1 | ±0.1 | 63.4 | ±0.56 |
| G-65 | 3.1 | ±0.1 | 64.4 | ±0.57 |
| G-67 | 3.1 | ±0.1 | 66.4 | ±0.59 |
| G-70 | 3.1 | ±0.1 | 69.4 | ±0.61 |
| G-72 | 3.1 | ±0.1 | 71.4 | ±0.63 |
| G-75 | 3.1 | ±0.1 | 74.4 | ±0.65 |
| G-80 | 3.1 | ±0.1 | 79.4 | ±0.69 |
| G-85 | 3.1 | ±0.1 | 84.4 | ±0.73 |
| G-90 | 3.1 | ±0.1 | 89.4 | ±0.77 |
| G-95 | 3.1 | ±0.1 | 94.4 | ±0.81 |
| G-100 | 3.1 | ±0.1 | 99.4 | ±0.85 |
| G-105 | 3.1 | ±0.1 | 104.4 | ±0.87 |
| G-110 | 3.1 | ±0.1 | 109.4 | ±0.91 |
| G-115 | 3.1 | ±0.1 | 114.4 | ±0.94 |
| G-120 | 3.1 | ±0.1 | 119.4 | ±0.98 |
| G-125 | 3.1 | ±0.1 | 124.4 | ±1.01 |
| G-130 | 3.1 | ±0.1 | 129.4 | ±1.05 |
| G-135 | 3.1 | ±0.1 | 134.4 | ±1.08 |
| G-140 | 3.1 | ±0.1 | 139.4 | ±1.12 |
| G-145 | 3.1 | ±0.1 | 144.4 | ±1.16 |
| G-155 | 5.7 | ±0.13 | 154.3 | ±1.23 |
| G-160 | 5.7 | ±0.13 | 159.3 | ±1.26 |
| G-165 | 5.7 | ±0.13 | 164.3 | ±1.3 |
| G-170 | 5.7 | ±0.13 | 169.3 | ±1.33 |
| G-175 | 5.7 | ±0.13 | 174.3 | ±1.37 |
| G-180 | 5.7 | ±0.13 | 179.3 | ±1.4 |
| G-185 | 5.7 | ±0.13 | 184.3 | ±1.44 |
| G-190 | 5.7 | ±0.13 | 189.3 | ±1.47 |
| G-195 | 5.7 | ±0.13 | 194.3 | ±1.51 |
| G-200 | 5.7 | ±0.13 | 199.3 | ±1.55 |
| G-205 | 5.7 | ±0.13 | 204.3 | ±1.58 |
| G-210 | 5.7 | ±0.13 | 209.3 | ±1.61 |
| G-215 | 5.7 | ±0.13 | 214.3 | ±1.65 |
| G-220 | 5.7 | ±0.13 | 219.3 | ±1.68 |
| G-225 | 5.7 | ±0.13 | 224.3 | ±1.71 |
| G-230 | 5.7 | ±0.13 | 229.3 | ±1.73 |
| G-235 | 5.7 | ±0.13 | 234.3 | ±1.78 |
| G-240 | 5.7 | ±0.13 | 239.3 | ±1.81 |
| G-245 | 5.7 | ±0.13 | 244.3 | ±1.84 |
| G-250 | 5.7 | ±0.13 | 249.3 | ±1.88 |
| G-255 | 5.7 | ±0.13 | 254.3 | ±1.91 |
| G-260 | 5.7 | ±0.13 | 259.3 | ±1.94 |
| G-265 | 5.7 | ±0.13 | 264.3 | ±1.97 |
| G-270 | 5.7 | ±0.13 | 269.3 | ±2.01 |
| G-275 | 5.7 | ±0.13 | 274.3 | ±2.04 |
| G-280 | 5.7 | ±0.13 | 279.3 | ±2.07 |
| G-285 | 5.7 | ±0.13 | 284.3 | ±2.1 |
| G-290 | 5.7 | ±0.13 | 289.3 | ±2.14 |
| G-295 | 5.7 | ±0.13 | 294.3 | ±2.17 |
| G-300 | 5.7 | ±0.13 | 299.3 | ±2.2 |
| G-305 | 5.7 | ±0.13 | 304.3 | ±2.24 |
| G-310 | 5.7 | ±0.13 | 309.3 | ±2.27 |
| G-315 | 5.7 | ±0.13 | 314.3 | ±2.3 |
| G-320 | 5.7 | ±0.13 | 319.3 | ±2.33 |
| G-325 | 5.7 | ±0.13 | 324.3 | ±2.36 |
| G-330 | 5.7 | ±0.13 | 329.3 | ±2.39 |
| G-335 | 5.7 | ±0.13 | 334.3 | ±2.42 |
| G-340 | 5.7 | ±0.13 | 339.3 | ±2.45 |
| G-345 | 5.7 | ±0.13 | 344.3 | ±2.48 |
| G-350 | 5.7 | ±0.13 | 349.3 | ±2.51 |
| G-355 | 5.7 | ±0.13 | 354.3 | ±2.54 |
| G-360 | 5.7 | ±0.13 | 359.3 | ±2.57 |
| G-365 | 5.7 | ±0.13 | 364.3 | ±2.6 |
| G-370 | 5.7 | ±0.13 | 369.3 | ±2.63 |
| G-375 | 5.7 | ±0.13 | 374.3 | ±2.67 |
| G-380 | 5.7 | ±0.13 | 379.3 | ±2.7 |
| G-385 | 5.7 | ±0.13 | 384.3 | ±2.73 |
| G-390 | 5.7 | ±0.13 | 389.3 | ±2.77 |
| G-395 | 5.7 | ±0.13 | 394.3 | ±2.79 |
| G-400 | 5.7 | ±0.13 | 399.3 | ±2.82 |
| G-405 | 5.7 | ±0.13 | 404.3 | ±3 |
| G-410 | 5.7 | ±0.15 | 409.3 | ±3 |
| G-415 | 5.7 | ±0.15 | 414.3 | ±3 |
| G-420 | 5.7 | ±0.15 | 419.3 | ±3 |
| G-425 | 5.7 | ±0.15 | 424.3 | ±3 |
| G-430 | 5.7 | ±0.15 | 429.3 | ±3 |
| G-435 | 5.7 | ±0.15 | 434.3 | ±3 |
| G-440 | 5.7 | ±0.15 | 439.3 | ±3 |
| G-445 | 5.7 | ±0.15 | 444.3 | ±3 |
| G-450 | 5.7 | ±0.15 | 449.3 | ±3 |
| G-455 | 5.7 | ±0.15 | 454.3 | ±3.3 |
| G-460 | 5.7 | ±0.15 | 459.3 | ±3.3 |
| G-465 | 5.7 | ±0.15 | 464.3 | ±3.3 |
| G-470 | 5.7 | ±0.15 | 469.3 | ±3.3 |
| G-475 | 5.7 | ±0.15 | 474.3 | ±3.3 |
| G-480 | 5.7 | ±0.15 | 479.3 | ±3.3 |
| G-485 | 5.7 | ±0.15 | 484.8 | ±3.3 |
| G-490 | 5.7 | ±0.15 | 489.3 | ±3.3 |
| G-495 | 5.7 | ±0.15 | 494.3 | ±3.3 |
| G-500 | 5.7 | ±0.15 | 499.3 | ±3.3 |
| G-505 | 5.7 | ±0.15 | 504.3 | ±3.7 |
| G-510 | 5.7 | ±0.15 | 509.3 | ±3.7 |
| G-515 | 5.7 | ±0.15 | 514.3 | ±3.7 |
| G-520 | 5.7 | ±0.15 | 519.3 | ±3.7 |
| G-525 | 5.7 | ±0.15 | 524.3 | ±3.7 |
| G-530 | 5.7 | ±0.15 | 529.3 | ±3.7 |
| G-535 | 5.7 | ±0.15 | 534.3 | ±3.7 |
| G-540 | 5.7 | ±0.15 | 539.3 | ±3.7 |
| G-545 | 5.7 | ±0.15 | 544.3 | ±3.7 |
| G-550 | 5.7 | ±0.15 | 549.3 | ±3.7 |
| G-555 | 5.7 | ±0.15 | 554.3 | ±4 |
| G-560 | 5.7 | ±0.15 | 559.3 | ±4 |
| G-565 | 5.7 | ±0.15 | 564.3 | ±4 |
| G-570 | 5.7 | ±0.15 | 569.3 | ±4 |
| G-575 | 5.7 | ±0.15 | 574.3 | ±4 |
| G-580 | 5.7 | ±0.15 | 579.3 | ±4 |
| G-585 | 5.7 | ±0.15 | 584.3 | ±4 |
| G-590 | 5.7 | ±0.15 | 589.3 | ±4 |
| G-595 | 5.7 | ±0.15 | 594.3 | ±4 |
| G-600 | 5.7 | ±0.15 | 599.3 | ±4 |
| G-610 | 5.7 | ±0.15 | 609.3 | ±4.7 |
| G-620 | 5.7 | ±0.15 | 619.3 | ±4.7 |
| G-630 | 5.7 | ±0.15 | 629.3 | ±4.7 |
| G-640 | 5.7 | ±0.15 | 639.3 | ±4.7 |
| G-650 | 5.7 | ±0.15 | 649.3 | ±4.7 |
| G-660 | 5.7 | ±0.15 | 659.3 | ±4.7 |
| G-670 | 5.7 | ±0.15 | 669.3 | ±4.7 |
| G-680 | 5.7 | ±0.15 | 679.3 | ±4.7 |
| G-690 | 5.7 | ±0.15 | 689.3 | ±4.7 |
| G-700 | 5.7 | ±0.15 | 699.3 | ±4.7 |
| G-710 | 5.7 | ±0.15 | 709.3 | ±4.7 |
| G-720 | 5.7 | ±0.15 | 719.3 | ±4.7 |
| G-730 | 5.7 | ±0.15 | 729.3 | ±4.7 |
| G-740 | 5.7 | ±0.15 | 739.3 | ±4.7 |
| G-750 | 5.7 | ±0.15 | 749.3 | ±4.7 |
| G-760 | 5.7 | ±0.15 | 759.3 | ±5.3 |
| G-770 | 5.7 | ±0.15 | 769.3 | ±5.3 |
| G-780 | 5.7 | ±0.15 | 779.3 | ±5.3 |
| G-790 | 5.7 | ±0.15 | 789.3 | ±5.3 |
| G-800 | 5.7 | ±0.15 | 799.3 | ±5.3 |
| G-810 | 5.7 | ±0.15 | 809.3 | ±6 |
| G-820 | 5.7 | ±0.15 | 819.3 | ±6 |
| G-830 | 5.7 | ±0.15 | 829.3 | ±6 |
| G-840 | 5.7 | ±0.15 | 839.3 | ±6 |
| G-850 | 5.7 | ±0.15 | 849.3 | ±6 |
| G-860 | 5.7 | ±0.15 | 859.3 | ±6 |
| G-870 | 5.7 | ±0.15 | 869.3 | ±6 |
| G-880 | 5.7 | ±0.15 | 879.3 | ±6 |
| G-890 | 5.7 | ±0.15 | 889.3 | ±6 |
| G-900 | 5.7 | ±0.15 | 899.3 | ±6 |
| G-910 | 5.7 | ±0.15 | 909.3 | ±6.7 |
| G-920 | 5.7 | ±0.15 | 919.3 | ±6.7 |
| G-930 | 5.7 | ±0.15 | 929.3 | ±6.7 |
| G-940 | 5.7 | ±0.15 | 939.3 | ±6.7 |
| G-950 | 5.7 | ±0.15 | 949.3 | ±6.7 |
| G-960 | 5.7 | ±0.15 | 959.3 | ±6.7 |
| G-970 | 5.7 | ±0.15 | 969.3 | ±6.7 |
| G-980 | 5.7 | ±0.15 | 979.3 | ±6.7 |
| G-990 | 5.7 | ±0.15 | 989.3 | ±6.7 |
| G-1000 | 5.7 | ±0.15 | 999.3 | ±6.7 |
| G-1020 | 5.7 | ±0.15 | 1019.3 | ±7.5 |
| G-1040 | 5.7 | ±0.15 | 1039.3 | ±7.5 |
| G-1060 | 5.7 | ±0.15 | 1059.3 | ±7.5 |
| G-1080 | 5.7 | ±0.15 | 1079.3 | ±7.5 |
| G-1100 | 5.7 | ±0.15 | 1099.3 | ±7.5 |
| G-1120 | 5.7 | ±0.15 | 1119.3 | ±7.5 |
| G-1140 | 5.7 | ±0.15 | 1139.3 | ±7.5 |
| G-1160 | 5.7 | ±0.15 | 1159.3 | ±7.5 |
| G-1180 | 5.7 | ±0.15 | 1179.3 | ±7.5 |
| G-1200 | 5.7 | ±0.15 | 1199.3 | ±7.5 |
| G-1220 | 5.7 | ±0.15 | 1219.3 | ±7.5 |
| G-1240 | 5.7 | ±0.15 | 1239.3 | ±7.5 |
| G-1260 | 5.7 | ±0.15 | 1259.3 | ±7.5 |
| G-1280 | 5.7 | ±0.15 | 1279.3 | ±7.5 |
| G-1300 | 5.7 | ±0.15 | 1299.3 | ±7.5 |
| G-1320 | 5.7 | ±0.15 | 1319.3 | ±7.5 |
| G-1340 | 5.7 | ±0.15 | 1339.3 | ±7.5 |
| G-1360 | 5.7 | ±0.15 | 1359.3 | ±7.5 |
| G-1380 | 5.7 | ±0.15 | 1379.3 | ±7.5 |
| G-1400 | 5.7 | ±0.15 | 1399.3 | ±7.5 |
| G-1420 | 5.7 | ±0.15 | 1419.3 | ±7.5 |
| G-1440 | 5.7 | ±0.15 | 1439.3 | ±7.5 |
| G-1460 | 5.7 | ±0.15 | 1459.3 | ±7.5 |
| G-1480 | 5.7 | ±0.15 | 1479.3 | ±7.5 |
| G-1500 | 5.7 | ±0.15 | 1499.3 | ±7.5 |
規格 GS 番
（寸法単位＝mm）
| 呼び番号 | 太さ d2 | 太さ許容差 | 内径 d1 | 内径許容差 |
| GS-150 | 3.1 | ±0.1 | 149.3 | ±1.19 |
| GS-155 | 3.1 | ±0.1 | 154.9 | ±1.23 |
| GS-160 | 3.1 | ±0.1 | 159.3 | ±1.26 |
| GS-165 | 3.1 | ±0.1 | 164.3 | ±1.3 |
| GS-170 | 3.1 | ±0.1 | 169.3 | ±1.33 |
| GS-175 | 3.1 | ±0.1 | 174.3 | ±1.37 |
| GS-180 | 3.1 | ±0.1 | 179.3 | ±1.4 |
| GS-185 | 3.1 | ±0.1 | 184.3 | ±1.44 |
| GS-190 | 3.1 | ±0.1 | 189.3 | ±1.47 |
| GS-195 | 3.1 | ±0.1 | 194.3 | ±1.51 |
| GS-200 | 3.1 | ±0.1 | 199.3 | ±1.55 |
| GS-205 | 3.1 | ±0.1 | 204.3 | ±1.58 |
| GS-210 | 3.1 | ±0.1 | 209.3 | ±1.61 |
| GS-215 | 3.1 | ±0.1 | 214.3 | ±1.65 |
| GS-220 | 3.1 | ±0.1 | 219.3 | ±1.68 |
| GS-225 | 3.1 | ±0.1 | 224.3 | ±1.71 |
| GS-230 | 3.1 | ±0.1 | 229.3 | ±1.75 |
| GS-235 | 3.1 | ±0.1 | 234.5 | ±1.78 |
| GS-240 | 3.1 | ±0.1 | 239.3 | ±1.81 |
| GS-245 | 3.1 | ±0.1 | 244.3 | ±1.85 |
| GS-250 | 3.1 | ±0.1 | 249.3 | ±1.88 |
| GS-255 | 3.1 | ±0.1 | 254.3 | ±1.91 |
| GS-260 | 3.1 | ±0.1 | 259.3 | ±1.94 |
| GS-265 | 3.1 | ±0.1 | 264.3 | ±1.98 |
| GS-270 | 3.1 | ±0.1 | 269.3 | ±2.01 |
| GS-275 | 3.1 | ±0.1 | 274.3 | ±2.04 |
| GS-280 | 3.1 | ±0.1 | 279.3 | ±2.07 |
| GS-285 | 3.1 | ±0.1 | 284.3 | ±2.11 |
| GS-290 | 3.1 | ±0.1 | 289.3 | ±2.14 |
| GS-295 | 3.1 | ±0.1 | 294.3 | ±2.17 |
| GS-300 | 3.1 | ±0.1 | 299.3 | ±2.2 |
| GS-305 | 3.1 | ±0.12 | 304.3 | ±2.80 |
| GS 310 | 3.1 | ±0.12 | 309.3 | ±2.80 |
| GS-315 | 3.1 | ±0.12 | 314.3 | ±2.80 |
| GS-320 | 3.1 | ±0.12 | 319.3 | ±2.80 |
| GS-325 | 3.1 | ±0.12 | 324.3 | ±2.80 |
| GS-330 | 3.1 | ±0.12 | 329.3 | ±2.80 |
| GS-335 | 3.1 | ±0.12 | 334.3 | ±2.80 |
| GS-340 | 3.1 | ±0.12 | 339.3 | ±2.80 |
| GS-345 | 3.1 | ±0.12 | 344.3 | ±2.80 |
| GS-350 | 3.1 | ±0.12 | 349.3 | ±2.80 |
| GS-355 | 3.1 | ±0.12 | 354.3 | ±2.80 |
| GS-360 | 3.1 | ±0.12 | 359.3 | ±2.80 |
| GS-365 | 3.1 | ±0.12 | 364.3 | ±2.80 |
| GS-370 | 3.1 | ±0.12 | 369.3 | ±2.80 |
| GS-375 | 3.1 | ±0.12 | 374.3 | ±2.80 |
| GS-380 | 3.1 | ±0.12 | 379.3 | ±2.80 |
| GS-385 | 3.1 | ±0.12 | 384.3 | ±2.80 |
| GS-390 | 3.1 | ±0.12 | 389.3 | ±2.80 |
| GS-395 | 3.1 | ±0.12 | 394.3 | ±2.80 |
| GS-400 | 3.1 | ±0.12 | 399.3 | ±2.80 |
| GS-405 | 3.1 | ±0.12 | 404.3 | ±3 |
| GS-410 | 3.1 | ±0.12 | 409.3 | ±3 |
| GS-415 | 3.1 | ±0.12 | 414.3 | ±3 |
| GS-420 | 3.1 | ±0.12 | 419.3 | ±3 |
| GS-425 | 3.1 | ±0.12 | 424.3 | ±3 |
| GS-430 | 3.1 | ±0.12 | 429.3 | ±3 |
| GS-435 | 3.1 | ±0.12 | 434.3 | ±3 |
| GS-440 | 3.1 | ±0.12 | 439.3 | ±3 |
| GS-445 | 3.1 | ±0.12 | 444.3 | ±3 |
| GS-450 | 3.1 | ±0.12 | 449.3 | ±3 |
| GS-455 | 3.1 | ±0.12 | 454.3 | ±3.3 |
| GS-460 | 3.1 | ±0.12 | 459.3 | ±3.3 |
| GS-465 | 3.1 | ±0.12 | 464.3 | ±3.3 |
| GS-470 | 3.1 | ±0.12 | 469.3 | ±3.3 |
| GS-475 | 3.1 | ±0.12 | 474.3 | ±3.3 |
| GS-480 | 3.1 | ±0.12 | 479.3 | ±3.3 |
| GS-485 | 3.1 | ±0.12 | 484.3 | ±3.3 |
| GS-490 | 3.1 | ±0.12 | 489.3 | ±3.3 |
| GS-495 | 3.1 | ±0.12 | 494.3 | ±3.3 |
| GS-500 | 3.1 | ±0.12 | 499.3 | ±3.3 |
※材質によって寸法許容差が異なります。