行業標準鋁合金襯塑復合管
2024-09-09
行業標準CJ/T321-2010【鋁合金襯塑復合管材與管件】、國家標準GB/T41494-2022【鋁合金襯塑復合管材與管件】均由航天凱撒公司起草、主編，技術標準值均來自“航天凱撒管”，因此，在市場上
品牌：航天凱撒 規格：dn20~dn315 產地：山西 材質：鋁合金襯PPR
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