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ASTM A312 MAT317L 1)STAINLESS STEEL SEAMLESS TUBES/PIPES: MATERIAL: AISI 304, 304L,...
API 5L、API 5CTseamless 89*3.5-8 108*4-8 114*5-10 133*4-10 140*5-10 159*4.5-10 168*6-1...