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天津津晟锐达钢管有限公司供应各种规格材质无缝管,合金管,直缝焊接钢管,Q390无缝管,Q420无缝管,Q460无缝管,Q690无缝管 A335无缝管,A333无缝管,20#钢管, 20G钢管, A106GRB无缝管, A53GRB无缝管;   标准: 美标,日标,德标,国标,欧标,英标.  标准材质:  ASTM/ASME B36.10M  API SPEC 5L: Grade:(B,X42,X46,X52,X56,X60,X65,X70,X80)  ASTM A53M /ASME SA53M: GradeA & GradeB  ASTM A106M/ASME SA-106M: GradeA GradeB GradeC  ASTM A179M/ASME SA-179M  ASTM A192M/ASME SA-192M  ASTM A209M/ASME SA-209M  ASTM A210M/ASME SA-210M  ASTM A161M/ASME SA-161M  ASTM A333M/ASME SA-333M  ASTM A334M/ASME SA-334M  ASTM A519M/ASME SA-519M  ASTM A524M/ASME SA-524M  ASTM A572M/ASME SA-572M  ASTM A213M/ASME SA-213M  ASTMA335M/ASME SA-335M  ASTM A671 ASTM A672  L245N无缝钢管,  L290N无... [更多]