Material: 304/304L
Diameter scope: 1/2"~24"
According to standard such as GB / ASTM / DIN / JIS etc.
Chinese standard: GB/T12459 GB/T13401
America standard: ASTM A403 / A403M, A774, B16.9/16.11 & 16.28 ANSI B16.9 / B16.25
Japan standard: JIS B2311 / 2220
German standard: DIN2617 / 2616 / 2615 / 2605 / 2606 / 2607