... , oil chemical industry components CustomizedOEM & ODM are welcomePlace of originKunShan China (Main land)2. Shipping & Payment Packing ... • Founded in 1987,abundent experience in the manufacture of oil chemical industry forging• 3 workshops occupie20000 square ... less than 2 complaint cases . 2, material of steel type of 15#,20#,25#,30#.35#,40#,45#,46 ... 5, excellent heat treatment. hot rolled steel sheet