Metal soft shockproof pipe Specifications: flexible, durable, bearing corroding, heating resistant, compression- resistance, installed easily Usage: air-condition instruments & apparatus, blower instruments.Technical parameter: Item no (caliber)(inch) size (mm)a(id) b( 4) d( 8) working compression(mpa) exploding compression (mpa) Ymbz10 3/8" ø9.60 20 217 1.2 4 36 Ymbz12 1/2" ø12.8 22 229 1.2 4 26 Ymbz15 5/8" ø16.0 24 250 1.2 4 26 Ymbz20 3/4" ø19.2 32 268 1.2 4 26 Ymbz22 7/8" ø22.2 37 305 1.2 3 20 Ymbz25 1.1/8" ø28.6 46 332 1.5 3.5 17 Ymbz32 1.3/8" ø34.9 51 395 1.5 3.5 16 Ymbz40 1.5/8" ø41.3 57 429 1.5 3.4 12 Ymbz50 2.1/8" ø54.0 70 524 2 3.4 12 Ymbz65 2.5/8" ø67.0 80 618 2 3.4 12 Ymbz80 3.1/8" ø80.0 87 684 2 2.7 12 Ymbz100 4.1/8" ø105.0 110 837 2 1.2 3.6