... beaded with ribs/without ribs or plain 3.Standard:BS DIN ANSI Our pipes and fittings ... and conforming to the following internationalstandards:1) American standard (ASTM Sch 40 & Sch 80, SDR 21 ... SDR 26, SDR41)2) British standard (BS 3505, BS 5255, 4515)3) Singaporean standard (SS 141, SS 272, ... SS 213)4) Australian standard (AS 1477, AS 1415)5) Japanese standard ...