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 7304193000 
其他外径≤114.3mm的管道管
Tubes, pipes of iron or steel, having an outside diameter not exceeding114.3mm (line pipe of a kind used for oil or gas pipelines ) |
7304199000
其他管道管
Other tubes, pipes of iron or steel(line pipe of a kind used for oil or gas pipelines ) |
7304519001
高温承压用合金钢无缝钢管（抗拉强度≥620MPa、屈服强度≥440MPa）
Alloy steel seamless steel tubes for pressure and high temperature (≥ 620MPa, tensile strength, yield strength ≥ 440MPa) (chemical composition diameter ≥ 127mm, (wt%) 0.07 ≤ C ≤ 0.13, 8.5 ≤ Cr ≤ 9.5, 0.3 ≤ Mo ≤ 0.6, 1.5 ≤ W ≤ 2, cold drawn or cold rolled, |
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7304239000
其他钻管
Other drill pipe, of a kind used in drilling for oil or gas pipelines ,other than cast iron |
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7304192000
其他114.3mm<外径<215.9mm的管道管
Tubes, pipes , of iron or steel,having an outside diameter exceeding 114.3mm but less than 215.9mm (line pipe of a kind used for oil or gas pipelines ) |
7304221000
不锈钢制外径≤168.3mm钻管
Drilling pipe, of stainless steel, having an outside diameter not exceeding168.3mm, of a kind used in drilling for oil or gas pipelines |
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7304111000
不锈钢制215.9mm≤外径≤406.4mm的管道管
Tubes, pipes, of stainless steel, having an outside diameter of 215.9mm or more but not exceeding 406.4mm (line pipe of a kind used for oil or gas pipelines ) |
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7304591001
高温承压用合金钢无缝钢管（抗拉强度≥620MPa、屈服强度≥440MPa）
Alloy steel seamless steel tubes for pressure and high temperature (tensile strength, yield strength ≥ 620MPa ≥ 440MPa ≥ 127mm) (boiler tube, the chemical composition (wt%) 0.07 ≤ C ≤ 0.13, 8.5 ≤ Cr ≤ 9.5, 0.3 ≤ Mo ≤ 0.6, 1.5 ≤ W ≤ 2, non cold drawn or co |
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7304112000
不锈钢制114.3mm<外径<215.9mm的管道管
Tubes, pipes, of stainless steel, having an outside diameter exceeding 114.3mm but less than 215.9mm (line pipe of a kind used for oil or gas pipelines ) |
7304113000
不锈钢制外径≤114.3mm的管道管
Tubes, pipes of stainless steel ,having an outside diament not exceeding114.3mm (line pipe of a kind used for oil or gas pipelines ) |
7304191000
其他215.9mm≤外径≤406.4mm的管道管
Tubes, pipes of iron or steel,having an outside diameter of 215.9mm or more but not exceeding 406.4mm , (line pipe of a kind used for oil or gas pipelines ) |
7304599001
高温承压用合金钢无缝钢管（抗拉强度≥620MPa、屈服强度≥440MPa）
Alloy steel seamless steel tubes for pressure and high temperature (≥ 620MPa, tensile strength, yield strength ≥ 440MPa) (chemical composition diameter ≥ 127mm, (wt%) 0.07 ≤ C ≤ 0.13, 8.5 ≤ Cr ≤ 9.5, 0.3 ≤ Mo ≤ 0.6, 1.5 ≤ W ≤ 2, non cold drawn or cold-rol |
7304231000
其他外径≤168.3mm钻管
Other drill pipe , having an outside diameter not exceeding168.3mm( of a kind used in drilling for oil or gas pipelines ) |
7304399000
非冷轧的铁制其他无缝管
Other tubes or pipes ,of circular cross-section, of iron or non-alloy steel (not cold-drawn or cold-rolled ) |
7304511090
冷轧的其他合金钢无缝锅炉管
Boiler tubes and pipes, of other alloy steel (cold-drawn or cold-rolled, including internal thread) |
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7304229000
其他不锈钢制钻管
Other drill pipe, of stainless steel, of a kind used in drilling for oil or gas pipelines |
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7304319000
其他冷轧的铁制无缝圆形截面管
Other tubes or pipes , of circular cross-section, cold-drawn or cold-rolled , of iron or non-alloy steel |
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7304511001
高温承压用合金钢无缝钢管（抗拉强度≥620MPa、屈服强度≥440MPa）
Alloy steel seamless steel tubes for pressure and high temperature (tensile strength, yield strength ≥ 620MPa ≥ 440MPa ≥ 127mm) (boiler tube, the chemical composition (wt%) 0.07 ≤ C ≤ 0.13, 8.5 ≤ Cr ≤ 9.5, 0.3 ≤ Mo ≤ 0.6, 1.5 ≤ W ≤ 2, cold drawn or cold r |
7304599090
非冷轧其他合金钢制无缝圆形截面管
Other tubes and pipes , having circular crosssections , of other alloy steel (other than the cold-drawn or cold-rolled) |
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7304119000
其他不锈钢制管道管
Other tubes, pipes of stainless steel(line pipe of a kind used for oil or gas pipelines ) |
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