?????? Astm A105n ?A182f65: ?????? ????? ????? ??????

??????????? ??? ???????? ???????? ????????. ???? ?????? ?????? ????? ?? ???????? ????? ??????? ??? ?? ??? ???????? ASTM A105N ????????? A182F65. ??? ????? ?????? ?????? ???? ?????? ???????? ??? ???? ?????? ?????? ????????? ??? ?? ????? ???? ASTM A105N ?????????? ?? ??????? ????? ?????? ?????? ??????? ???????? ??? ?????? ?????? ????????? ?? ?????? ????? ?????? ???????????????. . ??? ???????? ?????? ?? ??????? ???????? ??? ?????? ?????? ????????? ?????????? ???????? ??????. ???????? ??? ???? ????? ???? ????? ?????? A182F65? ???????? ?? ??????? ????? ??????? ?? ?????? ????? ??????. ??? ?????? ?????? ?????? ????????? ?? ??????? ??????? ?????? ??????? ???? ???? ?? ????? ???????? ??????????? ?????? ????? ??????? ?????? ????? ?????? ???????? ?? Shijiazhuang Deye Piping Industries Co.,Ltd.? ??? ??????? ?????? ??????? ??? ???: ?????? ????? ?????? ????? ????? ?????????. ????? ???????? ?????? ?????? ???????? ??? ???????? ?????? ?????? ?????????? ??????? ????????. ???? ??? ????? ?????? ?????? ?? ???????? ASTM A105N ?A182F65