... and replacement, convenience in maintenance 2. Materials: Carbon steel, stainless steel, alloy steel and duplex steel, etc. 3. Weight: ... train&railway parts, marine hardware, construction hardware, electrical, furniture, etc. 6. Standard: AISI, ASTM, DIN, GB, BS, JIS, NF, AAR ... processing and a large quantityproducing department quality control stainless steel rough dewaxing casting elevator parts