steel plate flange Standard: ANSI B16.5, B16.47 / API 605,6A,6B / ... ,2528,2561,2565,2566,2573 / BS 4504 PN16,PN40 / GOST steel plate flange1.) Standard: ANSI B16.5, B16.47 / API 605 ... 4504 PN16,PN40 / GOST 128202.) Material: Carbon steel flange-ASTM A105,A350,LF2,LF3,Q235, Stainless steel flange- 316,304,304L,316L,3.) Type: Welding ...