... , RST37.2,A105,20Mn All the products mainly export to European Market ,north America market ,Singapore market ,Mid-east market , ... market ,Japan, Korea&UAE market ect.1)Name: carbon steel flange &forged flanges2)Materials : ASTM A105,DIN ST37.2, ASTM ... Tong Pressure & Forging company LTD . engaged inforging of varieties of flange, axis , disk ,and unconventional parts, our forging flanges consist of ...