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| WPB (wrought pipe bend IVANECOZ; А вот что я нашел из сайта answers, где ответ дали специалисты: 1) WPB/WPC: first two letters mean Wrought Product, and the last letter means the pipe grade... B (35 Kpsi SMYS) and grade C (40 Kpsi SMYS). 2) WPB or WPC are a welded construction, it must have a "W" at the end, as in WPBW or WPCW. Bauirjan); WBP (wrought pipe bend IVANECOZ) | |||