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[ward brush] performance parameters of sweeping brush (3)

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 1. Product name: mixing brush and brush

 2. Common size and shape (wavy, flat) :
 Inner diameter 255: outer diameter 813.
 Inside diameter 275: outer diameter 915.
 Inner diameter 295: outer diameter 950.

 3, raw materials:
 Cold rolling plate (Q215)
 Specifications of 1.5 mm
 Yield strength 275-440.
 Tensile strength 32
 Polypropylene filament (pp-t30s)
 Specification: 2.2 x 2.8
 Tensile strength: greater than 599Mpa.
 Elongation: 27.40%.
 Brittle temperature, 45 ℃
 Galvanized steel spring wire (60MN annealing treatment)
 Specification: ¢0.65
 Tensile strength: greater than 1340Mpa.
 Elongation: 14.10%.
 Bending strength: 3.2R.

 4. Fixed technology
 (1) polypropylene brush hot melt

 (2) glue injection

 (3) stamping.

 5. Quality standards.
 (1) appearance: the brush is neatly arranged, without burr, without gel;
 (2) brush proportion: 60% polypropylene brush wire, 40% galvanized steel wire.
 (3) tension: plastic brush wire, single wire anti-pulling force is greater than 30KG.
 (4) heat resistance: note rubber and plastic wire brush to 40 ℃ not embrittlement.

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