??????????????? ????????????????????（????????? ?????????????）

??????	????????????m2	???????????????? ???????????????? L	???????????????????? mm	???????????? mm	??????????????????????? pcs	???????? mm	??????????????????? ????????? ?????×?????×?????? mm	??????????????? Mpa	??????????? ????????? kg
BS2/420-U	2	31	420×420	30	9	30	1552×820×795	0.6	470
BS3/420-U	3	45	420×420	30	13	30	1796×820×795	0.6	500
BS4/420-U	4	59	420×420	30	17	30	2040×820×795	0.6	540
BS5/420-U	5	76	420×420	30	22	30	2345×820×795	0.6	580
BS6/420-U	6	90	420×420	30	26	30	2589×820×795	0.6	620

????????? (?) ??????????? ???????? 30mm ??????? ?????? ???????????????? ???????? ??????????????????

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