seamless copper tube meaning in English

无缝紫铜管

Standard specification for seamless copper tube in coils
无缝铜螺旋管标准规范
Standard specification for seamless copper tube
无缝铜管的标准规范
Standard specification for seamless copper tube , bright annealed
光亮退火的无缝铜管的标准规范
Specification for aircraft material - high pressure seamless copper tubes
飞机材料规范.高压无缝铜管
Copper and copper alloys - seamless copper tubes for electrical purposes
铜和铜合金.电气用无缝铜管

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