DIN Slip On RF Flange Material: 304, 306, 304L, 306L Size: 1/2- ... .about usNanjing Yuhuatai Tello Stainless Steel Products Factory is the professional manufacturer and exporter of flanges.Our products are widely used ... , South Korea, Austrilia, Malaysia, Philippines, Taiwan, South Africa, and so on.We sincerely hope to could establish cooperation with you.