... field Name: copper pipe fitting Ability for the material of this kind of fitting: Grade 3.6,4. ... etc Alumimum 100,5052,6061,6063,etc Ability for the surface finish: Electroplate Zinc plated(while, ... finish Grinding and polishing,etc,except mirror Ability for the tolerance: Roundess 0.002mm Cylindricity 0.003mm ... time as we can .We have abundant experience for exporting so that you couldavoid lots of risks ...