Silicon Manganese SiMn Alloy in Vietnam importer. Just fill in the form below, click submit, you will get the price list, and we will contact you within one working day. ... (MN-Si) in coils, hot rolled, circular cross sections, diameter D = 7.1mm, 100% new, Grade D-Class 1, JIS standard . Actual quantity: 245270kg. China. ton.