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Ash'ari, Maulana Fajar (2023) Analisa Pengaruh Temperature dan Waktu Tahan Preheating pada Hasil Pengelasan SMAW MATERIAL ST 41 Terhadap Uji Tarik dan Mikro. (Analysis of The Influence of Temperature and Preheating Time on The Results of SMAW Welding ST 41 Materials on Tensile and Micro Tests). Undergraduate thesis, Universitas 17 Agustus 1945 Surabaya.