| Name | Address | Phone |
| [Iron and steel producers] | ||
| Azuma Kogyo Co., Ltd. | 99, Minamiushiroya, Yashio-shi, Saitama-ken 340-0831 | 048-936-8101 |
| Azuma Pre-coat Co., Ltd. | 2-30, Shiohama, Ichikawa-shi, Chiba-ken 272-0127 | 047-396-0171 |
| Chiyoda Steel Co., Ltd. | 6-10-6, Ayase, Adachi-ku, Tokyo 120-0005 | 03-3605-2191 |
| Chubu Steel Plate Co., Ltd. | 5-1, Kousudori, Nakagawa-ku, Nagoya-shi, Aichi-ken 454-8506 | 052-661-3811 |
| Daito Industry Co., Ltd. | 2-1-10, Hyakushima, Nishiyodogawa-ku, Osaka-shi, Osaka 555-0044 | 06-6473-7141 |
| Dnp Ellio Printing Co., Ltd. | 4013, Nakatsu, Aikawa-machi, Aiko-gun, Kanagawa-ken 243-0303 | 046-285-1311 |
| Godo Steel, Ltd. | 2-2-8, Dojimahama, Kita-ku, Osaka-shi, Osaka 530-0004 | 06-6343-7600 |
| Hokkai Koki Co., Ltd. | 441, Kamiebetsu, Ebetsu-shi, Hokkaido 067-8565 | 011-382-3361 |
| JFE Galvanizing & Coating Co., Ltd. | 3-1-9, Nihonbashi-Muromachi, Chuo-ku, Tokyo 103-0022 | 03-5255-9524 |
| JFE Metal Products & Engineering Inc. | 1-10-15, Nihonbashi-Horidomecho, Chuo-ku, Tokyo 103-0012 | 03-5644-1200 |
| JFE Welded Pipe Manufacturing Co., Ltd. | 7-1, Anesaki-Kaigan, Ichihara-shi, Chiba-ken 299-0107 | 0436-62-8111 |
| Kyoei Kenzai, Ltd. | 42-22, Shimizucho, Neyagawa-shi, Osaka 572-0044 | 072-828-0007 |
| Kyoei Steel, Ltd. | 1-4-16, Dojimahama, Kita-ku, Osaka-shi, Osaka 530-0004 | 06-6346-5221 |
| Maruichi Steel Tube, Ltd. | 3-9-10, Kitahorie, Nishi-ku, Osaka-shi, Osaka 550-0014 | 06-6531-0101 |
| Metal Product Co., Ltd. | 1-1-1, Nishiura,Funabashi-shi, Chiba-ken 273-8502 | 047-433-8511 |
| Nakajima Steel Pipe Co., Ltd. | 2-4-9, Umeda, Kita-ku, Osaka-shi, Osaka 530-0001 | 06-6914-1811 |
| Nakayama Kasei Co., Ltd. | 6-17-5, Isonokamicho, Kishiwada-shi, Osaka 596-0001 | 0724-39-9931 |
| Nichia Steel Works, Ltd. | 19, Nakahamacho, Amagasaki-shi, Hyogo-ken 660-0091 | 06-6416-1021 |
| Nippon Steel & Sumikin Coated Sheet Corporation | 1-9-2, Higashishinbashi, Minato-ku, Tokyo 105-0021 | 03-6858-7230 |
| Nippon Steel & Sumikin Metal Products Co., Ltd. | 2-17-12, Kiba, Koto-ku, Tokyo 135-0042 | 03-3630-3200 |
| Nisshin A&C Co., Ltd. | 3-23-22, Toyo, Koto-ku, Tokyo 135-0016 | 03-5635-6111 |
| Nittetsu Column Co., Ltd. | 1, Kimitsu, Kimitsui-shi, Chiba-ken 299-1141 | 0439-50-8322 |
| Osaka Steel Co., Ltd. | 1-9-3, Minamiokajima, Taisho-ku, Osaka-shi, Osaka 551-0021 | 06-6552-1441 |
| Osaka Teppan Co., Ltd. | 6-3, Ohamanishimachi, Sakai-shi, Osaka 590-0977 | 072-238-4601 |
| Sanwa Column, Ltd. | 294-38, Ashitaka, Numazu-shi, Shizuoka-ken 410-0001 | 055-920-6400 |
| Sasaki Pipe Co., Ltd. | 5-47, Higashiarioka, Itami-shi, Hyogo-ken 664-0845 | 072-782-6205 |
| Seikei Steel Pipe Corporation | 3-2, Sakaecho, Sano-shi, Tochigi-ken 327-0816 | 0283-22-4425 |
| Shinko Kenzai, Ltd. | 46, Marushimacho, Amagasaki-shi, Hyogo-ken 660-0086 | 06-6418-2621 |
| Takasago Tekko K.K. | 1-1-1, Shingashi, Itabashi-ku, Tokyo 175-0081 | 03-5399-8111 |
| Toho Sheet & Frame Co., Ltd. | 3-12-2, Nihonbashi, Chuo-ku, Tokyo 103-0027 | 03-3274-6215 |
| Tokai Color Co., Ltd. | 1, Anse, Wakamatsu-ku, Kitakyushu-shi, Fukuoka-ken 808-0022 | 093-771-1080 |
| Ueki Kokan Co., Ltd. | 2-36-8, Gochicho, Akishima-shi, Tokyo 196-0032 | 042-541-2011 |
| [Trading companies] | ||
| Akira Kozai Co., Ltd. | 1-11-15, Yaguma, Nakagawa-ku, Nagoya-shi, Aichi-ken 454-0013 | 052-331-8551 |
| Asai Sangyo Co., Ltd. | 2-13-34, Konan, Minato-ku, Tokyo 108-0075 | 03-5783-5361 |
| Canox Corporation | 1-1-12, Nagono, Nishi-ku, Nagoya-shi, Aichi-ken 451-8570 | 052-564-3511 |
| Daisen Sangyo Corporation | 2-1-10, Imabashi, Chuo-ku, Osaka-shi, Osaka 541-0042 | 06-6220-1121 |
| E. Katayama & Co., Ltd. | 3-1-1, Itachibori, Nishi-ku, Osaka-shi, Osaka 550-0012 | 06-6532-1571 |
| E. Sadoshima & Co., Ltd. | 1-16-19, Minamisenba, Chuo-ku, Osaka-shi, Osaka 542-0082 | 06-6251-0855 |
| Fujiden International Corp. | 3-2-8, Bingomachi, Chuo-ku, Osaka-shi, Osaka 541-0051 | 06-6261-2471 |
| Fukuei Steel Corporation | 2-4-2, Sinmachi, Nishi-ku, Osaka-shi, Osaka 550-0013 | 06-6536-2981 |
| Hakuyo Sangyo Co., Ltd. | 4-1-1, Minamihonmachi, Chuo-ku, Osaka-shi, Osaka 541-0054 | 06-6241-7231 |
| Hanwa Co., Ltd. | 1-13-10, Tsukiji, Chuo-ku, Tokyo 104-8429 | 03-3544-2171 |
| Hayakawa Co., Ltd. | 2-22-8, Nagono, Nishi-ku, Nagoya-shi, Aichi-ken 451-0042 | 052-551-3101 |
| JFE Shoji Kohkankanzai Inc. | 1-8-12, Nihonbashi-Horidomecho, Chuo-ku, Tokyo 103-0012 | 03-5614-3830 |
| JFE Shoji Trade Corporation | 2-7-1, Otemachi, Chiyoda-ku, Tokyo 100-8070 | 03-5203-5075 |
| K&I Tubular Corporation | 2-7-1, Otemachi, Chiyoda-ku, Tokyo 100-8070 | 03-3279-8751 |
| Kanamori Co., Ltd. | 2-11-4, Yaesu, Chuo-ku, Tokyo 104-0028 | 03-3272-8505 |
| Kanehira Steel Co., Ltd. | 1-10-7, Itachibori, Nishi-ku, Osaka-shi, Osaka 550-0012 | 06-6532-1121 |
| Kanematsu Corporation | 1-2-1, Shibaura, Minato-ku, Tokyo 105-8005 | 03-5440-8717 |
| Kawajyu Shoji Co., Ltd. | 2-6-5, Minamisuna, Koto-ku, Tokyo 136-8588 | 03-5677-1011 |
| MItsubishi Corporation Unimetals Ltd. | 8-1, Akashimachi, Chuo-ku, Tokyo 104-6591 | 03-3248-6600 |
| Kojima. Co., Ltd. | 2-17-7, Nihonbashi-Kayabacho, Chuo-ku, Tokyo 103-0025 | 03-3668-4333 |
| Koyo ShojiCorporation | 1-18-15, Minamihorie, Nishi-ku, Osaka-shi, Osaka 550-0015 | 06-6538-7200 |
| Kusano Co., Ltd. | 3-9-4, Ginza, Chuo-ku, Tokyo 104-0061 | 03-3541-2911 |
| Marubeni-Itochu Steel Inc. | 1-4-1, Nihonbashi, Chuo-ku, Tokyo 103-8247 | 03-5204-3300 |
| Meiwa Corporation | 3-3-1, Marunouchi, Chiyoda-ku, Tokyo 100-8311 | 03-3240-9011 |
| Metal One Corporation | 3-23-1, Shiba, Minato-ku, Tokyo 105-0014 | 03-6400-2000 |
| Metal One Tubular Products Inc. | 3-23-1, Shiba, Minato-ku, Tokyo 105-0014 | 03-6400-6063 |
| Mitsui & Co., Ltd. | 1-2-1, Otemachi, Chiyoda-ku, Tokyo 100-0004 | 03-3285-1111 |
| Mitsui & Co. Steel Ltd. | 5-3-1, Akasaka, Minato-ku, Tokyo 107-6334 | 03-5544-5001 |
| Morisada Corporation | 3-22-8, Meieki, Nakamura-ku, Nagoya-shi, Aichi-ken 450-8523 | 052-562-3111 |
| Nakagawa Sangyo K.K. | 3-6-82, Minowa, Higashiosaka-shi, Osaka 578-0914 | 0729-64-8410 |
| Nakamura Kozai Co., Ltd. | 2-8-10, Shinkawa, Chuo-ku, Tokyo 104-0033 | 03-3551-8161 |
| Nakamura Shoji Co., Ltd. | 1-71, Kanda-Izumicho, Chiyoda-ku, Tokyo 101-0024 | 03-5687-5911 |
| Nakayama Trading Co., Ltd. | 1-12-19, Minamihorie, Nishi-ku, Osaka-shi, Osaka 550-0015 | 06-6538-1812 |
| Nihon Teppan Co., Ltd. | 1-2-5, Nihonbashi, Chuo-ku, Tokyo 103-8237 | 03-3272-5112 |
| Nishizawa, Ltd. | 2-5-8, Bingomachi, Chuo-ku, Osaka-shi, Osaka 541-0051 | 06-6208-5400 |
| Nippon Steel Trading Co., Ltd. | 2-2-1, Otemachi, Chiyoda-ku, Tokyo 100-0004 | 03-6225-3511 |
| Ntek Co., Ltd. | 3-12-8, Hacchobori, Chuo-ku, Tokyo 104-0032 | 03-3553-6011 |
| Ogawa Shoten Co., Ltd. | 2-25-3, Chiyoda, Naka-ku, Nagoya-shi, Aichi-ken 460-0012 | 052-261-3131 |
| Ohgitani Co., Ltd. | 1-3-7, Tosabori, Nishi-ku, Osaka-shi, Osaka 550-0001 | 06-6444-1521 |
| Ohmi Industries, Ltd. | 3-11-10, Minamisenba, Chuo-ku, Osaka-shi, Osaka 542-0081 | 06-6252-2470 |
| Ohmi Sangyo Co., Ltd. | 3-11-10, Minamisenba, Chuo-ku, Osaka-shi, Osaka 542-0081 | 06-6252-2477 |
| Okaya & Co., Ltd. | 1-9-1, Marunouchi, Chiyoda-ku, Tokyo 100-0005 | 03-3215-7552 |
| Saicho & Co., Ltd. | 8-6, Nihonbashi-Tomizawacho, Chuo-ku, Tokyo 103-8471 | 03-3667-7892 |
| Sakaguchi Kosan Co., Ltd. | 7-3-30, Izuo, Taisho-ku, Osaka-shi, Osaka 551-0031 | 06-6554-2991 |
| Sanyo Co., Ltd. | 1-13-1, Nihonbashi, Chuo-ku, Tokyo 103-0027 | 03-3281-2212 |
| Sato Shoji Corporation | 1-13-10, Hacchobori, Chuo-ku, Tokyo 104-8522 | 03-3553-7001 |
| Shibamoto & Co., Ltd. | 1-1-12, Minato, Chuo-ku, Tokyo 104-0043 | 03-3553-1111 |
| Shinei Shokai Co., Ltd. | 1-17-5, Shinmachi, Nishi-ku, Osaka-shi, Osaka 550-0013 | 06-6541-2521 |
| Shinsho Corporation | 1-2-5, Nihonbashi, Chuo-ku, Tokyo 103-8261 | 03-3276-2117 |
| Steel Center Co., Ltd. | 2-3-4, Uchikanda, Chiyoda-ku, Tokyo 101-0047 | 03-5207-8484 |
| Sumikin Bussan Corporation | 8-5-27, Akasaka, Minato-ku, Tokyo 107-8527 | 03-5412-5001 |
| Sumitomo Corporation | 1-8-11, Harumi, Chuo-ku, Tokyo 104-8610 | 03-5166-5000 |
| The Sangyo Shinko Co., Ltd. | 1-5-7, Kameido, Koto-ku, Tokyo 136-0071 | 03-5627-2401 |
| Tokyo Boeki Steel & Materials, Ltd. | 2-13-8, Hacchobori, Chuo-ku, Tokyo 104-8510 | 03-3555-7110 |
| Tomiyasu & Co., Ltd. | 4-5-15, Taihei, Sumida-ku, Tokyo 130-0012 | 03-5611-7770 |
| Topy Enterprises, Ltd. | 1-2-2,Osaki,Shinagawa-ku,Tokyo 141-8667 | 03-3495-6500 |
| Toyota Tsusho Corporation | 4-9-8, Meieki, Nakamura-ku, Nagoya-shi, Aichi-ken 450-8575 | 052-584-5000 |
| Ueno Corporation | 3-15-16, Toyosaki, Kita-ku, Osaka-shi, Osaka 531-0072 | 06-6376-3081 |
| [Associations] | ||
| Galvanized Sheet Wholesalers' Association (Eastern Japan) | 3-2-10, Nihonbashi-Kayabacho, Chuo-ku, Tokyo 103-0025 | 03-3669-4815 |
| Galvanized Sheet Wholesalers' Association (Western Japan) | 2-15-22, Shinmachi, Nishi-ku, Osaka-shi, Osaka 550-0013 | 06-6538-3288 |
| Japan Steel Plate Shearing Industrial Guild | 3-2-10, Nihonbashi-Kayabacho, Chuo-ku, Tokyo 103-0025 | 03-3669-0641 |
| Japan Coil Center Industry Association | 3-2-10, Nihonbashi-Kayabacho, Chuo-ku, Tokyo 103-0025 | 03-3662-6590 |
