... the ASTM, BS, DIN, JIS, EN, GB and customer's request.Ding Xiang county Wan Tong Pressure & ... engaged inforging of varieties of flange, axis , disk ,and unconventional parts, our forging flanges consist of 30 specifications ... which size 1/2"(DN15) to 80"(DN2000),And we have obtained DIN50049/EN10204/3.1B according ... to AD -Merkblatt WO/TRD100 and PED. We have approved the audit of ISO9001- ...