Bututun ASTM a269 wani nau'in bututu ne, saman yana da haske sosai, tsawonsa yana da tsayi sosai, tsawonsa zai iya kaiwa har zuwa 4000M/coil ba tare da wani walda ba, usage: ana iya amfani da shi galibi a cikin man fetur, iskar gas, masana'antar sinadarai, gina jiragen ruwa da sauran masana'antu. Kayan bututun ƙarfe: 316L, 316, 304, incoloy825, incoloy625, 2205 2507; Bututun ƙarfe OD: 6MM-25.4MM; Kauri bango na bututun ƙarfe: 0.5MM—2MM; Tsawon bututun ƙarfe: 1000M-6000M; Matsi na aiki: 50—200MPA