Welding steel pipe for automotive brake system and other system use. Feature: 1 With high cost performance 2 Single wall and double wall 3 Meet SAE J527 standard 4 Polish or Copper, Zinc and PVF plated for corrosion resistance 5 Packing: cut to length or in coil 6 Main size: OD 4. 76mm (3/ 16), Wall 0. 71mm OD 6. 35mm (1/ 4), Wall 0. 71mm OD 8. 00mm (5/ 16), Wall 0. 71mm