Application Industries of DIN2391 EN10305 Seamless Cold Drawn Precision Tubes

Seamless cold drawn precision tubes according to EN 10305-01 (DIN 2391) have narrow tolerance,a good surface and special mechanical properties. The material E355 (St52) is a carbon steel that is easy to weld. After the heat treatment (NBK or BKS) the tubes can be cold formed (bending).

DIN2395 highly accurate, cold drawn and bright seamless steel tube is used as the tube to be phosphated. The phosphated is realized with the imported chemical fluid to form a black film. The antirust oil is absorbed by means of the micropore on the film to prevent from the rust. The caps are covered at two ends of tube to prevent from the dust.
● High accuracy, excellent brightness, no oxidization on the outer and inner walls after heat treatment, high cleanness inside wall.
● The precision steel tube is able to stand high pressure. No deformation after cold bending, no crack after flaring and flattening. The complicated geometrical forming and machining can be realized.
● The color of NBK seamless tube is Bright Black. Color is homogeneously distributed on the tube surface. The tube has good property of antirust.

DIN2391 EN10305 seamless cold drawn precision tube usually for high precision purpose, auto industry, like manipulator, Shock Absorber, Transmission Shaft, Steering Gear, Car Frame, etc. the application including machine tools industry, construction machinery, ship building industry hydraulic system, automotive steel tube, and in the occasion where the high precision, brightness, cleanness and mechanical properties of the tube are required .