Product Description We can supply all kinds of condenser coated bundy tube, copper coated tube, codenser pipe, bundy tube, steel pipe 1.product name: copper 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: 0.3um+/-0.05um 5. Treatment: copper coated  6. Product application: refrigeration,auto brake system 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 C Si Mn P S 0.08% 0.03% 0.03% 0.02% 0.02%   Chemical Composition Machnical Properties   Tensile Strength   290Mpa   Yield Strength   180Mpa   Elongation   20%   Salt spray test   24hours   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 st