???? ??? ???? ???? ????? ???? ?????? ???? 1500 ??? ?? API ?????? ?????????

????? ???? Shijiazhuang Deye Piping Industries Co., Ltd. ?????? ???? ????? ??? ????? API 1500lbs? ????? ?? ?????? ???????? ????? ?????? ?????? ??????? ???????. ?? ????? ??? ?????? ????? ??????? API 600 ?API 6D? ??? ???? ???????? ??????? ?? ??????? ???????? ????????? ?????? ???? ??????? ????? ?????? API 1500 ??? ?????? ???? ???? ???? ?????? ????? ???? ????? ?????? ?????? ??? ??? ????? ??????. ????. ???? ???? ????? ?????? ?????? ?? ???????? ??????. ?? ????? ?????? ????? ?????? ???? ??? ???? ????? ????? ????? ?? ?????? ??? ???? ???????. ???????? ??? ???? ?? ????? ?????? ?????? ??????? ???????? ?? ????? ?????? ????? ????????? ?????? ????? ????????. ????? ?????? ????? ?????? ??? ??????? ???????? ???????? ??????? ????? ?????? ??????? ?????? ??????? ???????? ????????? ???? ????? ?????? ????????? ????? ?????? ??????? ??????? ??? ??? ???? ????? ??? ????? API 1500 ??? ?? Shijiazhuang Deye Piping Industries Co., Ltd. ?? ?????? ?????? ????????? ???????? ??????