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天津管線鋼管集團股份有限公司,天津大無縫管廠,a106b,a106-c,a53b,st45.8,st35.8,api,l245n,l360,l290,astm a106gr.b,304,0cr18ni9,06cr19ni10,316l,321,347h不銹鋼管,310s,jis stpg38,kstb42,st37,st3
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津管線鋼管集團股份有限公司,天津大無縫管廠,a106b,a106-c,a53b,st45.8,st35.8,api,l245n,l360,l290,astma106gr.b,304,0cr18ni9,06cr19ni10,316l,321,347h不銹鋼管,310s,jisstpg38,kstb42,st37,st35.4,1.0305,1.0405,1.7335,1.7380,1.7362,st52無縫鋼管