列表:shipbuilding steel pipe

GB T 5312 410I 410II 410III (03-07)
GB/T1220 0Cr18Ni9Ti shipbuildi (01-30)
GB/T1220 00Crl7Nil4Mo2 shipbui (01-30)
A240 410 shipbuilding steel pi (01-30)
A240 360 shipbuilding steel pi (01-30)
A240 320 shipbuilding steel pi (01-30)

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