Ipa ti pickling ati passivation lakoko prefabrication, alurinmorin, idanwo, ati itọju ooru yoo fa ohun elo afẹfẹ irin, slag alurinmorin, girisi, ati idoti miiran lati kojọpọ lori oke paipu (paipu irin erogba, paipu epo carbon, paipu irin alagbara, irin alagbara) , eyi ti yoo dinku ipata tun...
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