Method of joining enamel lined pipes
作者： Frederick W Turnbull
DOI:
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摘要:
lens.org 参考文章(3)
Thomas A Wry, Method of enameling pipe joints ,(1921)
Frederick W Turnbull, Mold for applying enamel ,(1953)
William O Clinedinst, Joint and method of making the same ,(1944)