Zinc Coating Bundy Tube

Zinc coating bundy tube Product Description We can supply all kinds of condenser zinc coated bundy tube, codenser pipe, bundy tube, steel pipe 1.product name: zinc coated bundy steel tube   2. standard and Materia:ASTM A254  BHG2 low carbon steel 3. Size:OD 4mm --12.7mm, W.T: 0.5mm--1.0mm 4. Copper coating thickness: 3um+/-0.05um 5.  Treatment: zinc coating bundy tube 6.  Product application: refrigeration,wire type condenser tube, bundy tube 7. Surface outlook: Both ends of tube without rag, corner processing, smooth, absence of istortion. 8.  Packing: plastic bag inside, iron frame fixed 9. Certification: ISO9001, ROHS Chemical Composition Chemical Composition C Si Mn P S ≤0.08% ≤0.03% ≤0.03% ≤0.02% ≤0.02%     Machnical Properties     Tensile Strength   ≥290Mpa   Yield Strength   ≥180Mpa   Elongation   ≥20%   Salt spray test   48hours   Inside Surface Cleanliness   ≤20g/m2   The tolerance allowed for the OD of the steel tube: OD The tolerance allowed (based on no coating) < 4.76 ±0.05mm 4.76 ~ 8.00 ±0.08mm > 8.00 ~ 12.00 ±0.10mm   The tolerance allowed for the thickness of the steel tube: Thickness The tolerance allowed (based on no coating) 0.50 ±0.07mm 0.70 ±0.08mm 1.00 ±0.09mm