ELBOW 45 LR SCH10s B16.9 A403WPW304L不锈钢弯头 ¥5.00 SUS304弯头不锈钢DN50 R=1.0D短半径 45° 喷砂标识 JIS ¥13.00 S30408不锈钢弯头90°长半径R=1.5DGB/T12459 ¥65.00 不锈钢SA-403M WP304S 90°E(L)无缝弯头ASME B16.9 ¥42.00 304不锈钢90°钢制无缝弯头R=1.5D GB/T12459-2017 ¥52.00 06Cr19Ni10 90°带直段无缝热压弯头E2.5S11S0 ¥140.00