Inimum order quantity: 5t delivery time: 40 day supplying ability: 2, 000 t description standard name: astm a822 a822m - standard specification for seamless cold-drawn carbon steel tubing for hydraulic system service product particular communication: 1) size: d: 80~350mm, s: 6~35mm, l: 4~13m 2) tight tolerance, smooth surface, uniform mechanical property(mechanical properties equilibrium); 3) heat treatment: bk, bks, gbk, nbk, stress relief, normalizing, spheroidize anneal, annealing, bright annealing, normalized, quenched and tempered, solution annealing, etc; 4) continuous stenciling as required; 5) rust prevention treatment, such as: immersion oil, lacquer, passivation, phosphating, etc; 6) plastic plugs in both ends hexagonal bundles of max. 2, 000kg with several steel strips. 7) packaging: hexagonal bundles of max. 1, 500kg with several steel strips, wrapped in waterproof paper, pvc sleeve, and sackcloth with several steel strips or packed in heavy tri-wall boxes, wooden boxes, wooden slats as requires;type: round , square, rectangle, hexagon. Streamline, etc; 8) main applications: products are widely used in hydraulic excavators, cranes, elevators, coal mining machine hydraulic system of hydraulic system etc. 9) hs cord: 7304319000, 7304519090 10) certificates: the products have been certified by iso9001, dnv. 11) products feature�high dimensional accuracy, good surface smoothness(mirror surface), stable and high mechanical property etc.