| Metal Parts |
| Sunday, 28 January 2007 | |
| The materials for metal parts on mechanical seals are required to meet the mechanical strength and corrosive resistance. Normally used SS304, SS316, A3 iron cast (plating) and Cr steel. | |
| แก้ไขล่าสุดเมื่อ ( Thursday, 16 August 2007 ) |