The BW fittings we supply are in accordance with the ASTM material standards.  Qualities:  A 234 gr. WPB, A 420 gr. WPL6, A860 gr. WPHY52, A403 gr. 316L, A815 UNS S31803 and A815 UNS S32760. X65, X52, ST52, S355, 316.

fittings1 My beautiful picture 165703 165704