EN10305-2 Cold Drawn Welded Precision Steel Tubes DOM tubing E155, E195, E235, E275, E355 +C +LC +SR +A +N

DOM (Drawn Over Mandrel) is a manufacturing process applied to tubing after initial construction. This process creates tubing with characteristics similar to seamless tubes, providing high strength and superior quality. Available in materials including E155, E195, E235, E275, E355, 1020, 1026, and others. DOM tubing is commonly used in automotive components and applications requiring precision dimensions.

Rm: tensile strength; ReH: upper yield strength; A: elongation after fracture

1 MPa = 1 N/mm²

Depending on the degree of cold work in the finishing pass, the yield strength may approach the tensile strength. For calculation purposes: for delivery condition +C: ReH ≥ 0.8 Rm; for delivery condition +LC: ReH ≥ 0.7 Rm; for delivery condition +SR/A/N: ReH ≥ 0.5 Rm

Cold rolling using Cold Pilger machines and Cold rolling machines

Size range: 20-350mm

• Standard: EN10305-2 Cold Drawn Precision Seamless Steel Pipes
• Steel Grades: E155, E195, E235, E275, E355, other materials available upon customer agreement
• Production Method: Cold drawn on welded steel tubes to achieve high dimensional accuracy on OD and WT tolerance
• Size Range: O.D.: 20-350mm | W.T.: 1-35mm | Length: maximum 12,000mm
• Packing: Hexagonal bundles with anti-rust oil protection and seaworthy packing

• +C: No heat treatment after the final cold drawing process
• +LC: After final heat treatment with a suitable drawing pass
• +SR: After final cold drawing process with stress relieve heat treatment in controlled atmosphere
• +A: After final cold drawing process with annealing in controlled atmosphere
• +N: After final cold drawing operation with normalization in controlled atmosphere