Type (ชนิด) : ASTM A403, ASME B16.9, NACE MR-0175 Butt-WeldingSize (ขนาด) : 1/2" - 12" Butt-WeldingThickness (หนา) : SCH10S, SCH40SBrand (แบรนด์) : ASK, BENKAN, KASUGAI, W.GELDBACH, CHINA, etc.