00634nam a2200169 i 4500 1/16130 990930s1958 enk eng d 16635 DLC GR-PeUP 665.5 BR British standard for steel pipe flanges and flanged fittings : (Nominal sizes 1/2 in. to 24 in.) for the petroleum industry London : British Standards House , 1958 83 p. : ill. ; 30 cm. Petroleum industry and trade. Petroleum engineering. British Standards Institution. INST UNIPILB MAIN 20040709 665.5 BR 00132540 00132540 LOAN 0 1