Sudan Chemical is a world-famous manufacturer, supplier, and exporter of Metal Treatment chemicals. Our RXSOL-68-6801-005 RX Jelly Pickling Paste Paste is highly concentrated paste which is used to clean weld seams and surrounding areas and is applied with a brush. This is a very effective product to acts as Degreasing, cleaning, pickling and passivating of austenitic and duplex stainless steel 304, 316, nickel and aluminum.