1. Standard:DIN2391,DIN17175,EN10305-1,etc 2. Size ranges: OD 6-85mm,WT 1-8mm 3.Precision: OD +/-0.05mm,WT +/-0.05mm.Special accuracy:+/-0.03mm 4. Length: 4.8-10m,random length or fixed length 5. Surface : oiled , galvanized ,phosphate etc. 6. Craft: cold drawn or cold rolled 7. Usage : Auto and motorcycle steel pipe Gas spring steel tube Boiler pipe Low and middlepressure fluid transportation pipeline Hydraulic system steel tube Electric industry 8. Package : Bundle packing Plain end or varnished as per buyer’s requestments Wrapped in waterproof paper Sackcloth with several steel strips Pack in heavy tri-wall boxes. 9. Main feature : No oxidation layer on the outer and inner walls No leakage under high pressure No crake under flating and flattening No distortion after cold bending High precision high cleanness Excellent brightness 10. Certificate : ISO9001-2008 quality 11. Manufacturer : direct selling 12. Annealed :+NBK,+GBK,+BKS 13.Trade terms : FOB/CFR/CIF/EXW/LC