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Welding Method Approval under the Law of Electric Work |
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Welding Method Approval under the Law of Gas Work |
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Fire protection Equipment and Safety Center of Japan (FESC) |
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Japan Water Works Association (JWWA) |
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Nippon Kaji Kyokai (NK) |
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Lloyd's Register of Shipping (LR) |
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Germanischer Lloyd (GL) |
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Det Norske Veritas (NV) |
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Korean Register of Shipping (KR) |
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Japan Vacuum Industrial Association (JVIA) |
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The Society of Piping Engineers |
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The Vacuum Society of Japan (VSJ) |
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The Japan Gas Association (JGA) |
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Japan Stainless Steel Association (JSSA) |
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Japan Welding Society (JWS) |
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Japan LP Gas Plant Association (JLPA) |
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Cryogenic Association of Japan |
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Japan Society of Seismic Isolation (JSSI) |
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