57×3.5-5-6-7-8-9-10-12

　　不锈钢管公称尺寸标外径*管壁厚度规格：Ф6x1Ф34x2-8Ф70x3-10Ф152x3-20Ф8x1-2Ф36x2-8Ф73x3-10Ф159x3-25Ф10x1-2Ф38x2-8Ф76x2-16Ф168x3-30Ф12x1-3Ф40x2-8Ф80x2-16Ф180x3-30Ф14x1-4Ф42x2-8Ф83x2-16Ф219x4-35Ф16x1-4Ф45x2-8Ф89x2-16Ф245x5-35Ф18x1-4Ф48x2-8Ф95x2.5-16Ф273x5-40Ф20x1-5Ф50x2-8Ф102x2.5-18Ф325x5-40Ф22x1-5Ф51x2-8Ф108x2.5-18Ф355x7-40Ф25x1.5-5Ф57x2-10Ф114x2.5-18Ф377x8-45Ф27x2-5Ф60x2-10Ф120x3-18Ф426x8-50Ф28x2-5Ф63x2-10Ф127x3-18Ф456x8-50Ф30x2-8Ф65x3-10Ф133x3-18Ф530x8-50Ф32x2-8Ф68x3-10Ф140x3-20Ф630x10-40

　　56×3.5-4-5-6-7-8-9-10

　　所以对不锈钢的使用环境有要求，而且需要经常擦拭，除去灰尘，保持清洁干燥。