This European Standard specifies the technical delivery conditions for welded cold sized steel tubes of square and rectangular cross section for precision applications.<\/p>\n
Tubes according to this document are characterized by having precisely defined tolerances on dimension and a specified maximum surface roughness. Typical fields of application are in the automotive, furniture and general engineering industries.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 4<\/td>\n | Contents Page <\/td>\n<\/tr>\n | ||||||
| 6<\/td>\n | European foreword <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | 1 Scope 2 Normative references <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | 3 Terms and definitions 4 Symbols 5 Classification and designation 5.1 Classification 5.2 Designation <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | 6 Information to be supplied by the purchaser 6.1 Mandatory information 6.2 Options <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 6.3 Example of an order 7 Manufacturing process 7.1 Steelmaking process 7.2 Tube manufacture and delivery conditions <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | Table 1 \u2014 Delivery conditions 8 Requirements 8.1 General 8.2 Chemical composition <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | Table 2 \u2014 Chemical composition (cast analysis) <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | Table 3 \u2014 Permissible deviations of the product analysis from the specified limits given in Table 2 8.3 Mechanical properties Table 4 \u2014 Mechanical properties at room temperature for the delivery conditions +CR1, +A and +N <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | Table 5 \u2014 Mechanical properties at room temperature for the delivery condition +CR 2 8.4 Appearance and internal soundness <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 8.5 Dimensions and tolerances 8.5.1 Side length(s), wall thickness and mass per unit length <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 8.5.2 Side length(s) tolerances Table 6 \u2014 Sizes, tolerances and mass per unit length <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 8.5.3 Wall thickness tolerances <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | Figure 1 \u2014 Limiting cross-sectional positions for measuring the dimensions B, H and T 8.5.4 Corner profile 8.5.5 Length and length tolerances <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | Table 7 \u2014 Tolerances for exact lengths 8.5.6 Straightness Figure 2 \u2014 Measurement of deviation from straightness e 8.5.7 Squareness of sides <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | Figure 3 \u2014 Squareness of sides 8.5.8 Concavity and convexity 8.5.9 Twist Figure 4 \u2014 Twist 8.5.10 Preparation of ends <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | 9 Inspection 9.1 Types of inspection 9.2 Inspection documents 9.2.1 Types of inspection documents 9.2.2 Content of inspection documents <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | 9.3 Summary of inspection and testing Table 8 \u2014 Summary of inspection and testing 10 Sampling 10.1 Frequency of tests 10.1.1 Test unit 10.1.2 Number of sample tubes 10.2 Preparation of samples and test pieces 10.2.1 General <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | 10.2.2 Test pieces for the tensile test Table 9 \u2014 Width and gauge length for non-proportional tensile test pieces 10.2.3 Test pieces for outside roughness measurement 11 Test methods 11.1 Tensile test <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | 11.2 Dimensional inspection 11.3 Roughness measurement 11.4 Visual examination 11.5 Non-destructive testing 11.6 Retests, sorting and reprocessing 12 Marking <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | 13 Protection and packaging <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Steel tubes for precision applications. Technical delivery – Welded cold sized square and rectangular tubes<\/b><\/p>\n |