... NECK BLIND THREAD 1)Name: carbon steel flange &forged flanges2)Materials : ASTM A105,DIN ST37.2, ASTM ... the ASTM, BS, DIN, JIS, EN, GB and customer's request.Ding Xiang county Wan Tong Pressure ... inforging of varieties of flange, axis , disk ,and unconventional parts, our forging flanges consist of 30 specifications ... 3.1B according to AD -Merkblatt WO/TRD100 and PED. We have approved the audit of ISO9001 ...