weld neck flange: 1.Size:1/2"--60" 2.Standard:ANSI,ASME,JIS,DIN 3.Material:304,316,304L,316L,321 etc. weld neck flange:Details of the ProductHebei Hanghao High-pressure Flange Pipe Fitting Manufacturing Co.,LtdProductsAll kinds of Pipe FittingsStandardASTM , ANSI, DIN, GB, JB/TWall ThincknessSCH20-SCH160MaterialQ235,20#,16Mn , ST45.8, 12CrMoV, 15CrMo , 1Cr13,1Cr18Ni9Ti, 0Cr19Ni9,00Cr19Ni11, ...