(1) Main steel pipe varieties: DIN series high-precision bright seamless steel pipes, special steel pipes for hydraulic systems, special steel pipes for automobile manufacturing
(2) Main standards: DIN2391, DIN2445, EN10305, DIN1629, DIN1630, ASTM A179
(3) Main materials: ST35 (E235) ST37.4 ST45 (E255) ST52 (E355)
(4) Main delivery status: NBK (+N) GBK (+A) BK (+C) BKW (+LC) BKS (+SR)
(5) (5) Main features: no oxidation layer on the inner and outer walls of the steel pipe, no leakage under high pressure, high precision, high finish, no deformation in cold bending, no cracks in flaring and flattening.(6) Main applications: Used in various industries such as hydraulic system piping, automobile manufacturing piping, military, engineering machinery, railroad locomotives, aerospace, ships, injection molding machines, die-casting machines, machine tools, diesel engines, petrochemicals, power stations, boiler equipment, etc.