Delivery Technical Condition for Austenitic Stainless Steel Seamless Round Steel Tubes with Special Requirements (DIN 17458-1985)
1. Scope
This delivery technical condition is applicable to the austenitic stainless steel seamless round steel tubes with external diameters of 4-10 mm, wall thickness of 0.5-2.5 mm, and a small number of other sizes (including small diameter, wall thickness, and large wall thickness).
2. Standard Reference
In addition to this delivery technical condition, the delivery shall comply with DIN 17458-1985, DIN 17459, DIN 2391 and other related technical conditions.
3. Order Containing
The order containing should include: 1) The Type or Name of the Products; 2) The Grade or the Implementation Standards; 3) The Diameter and the Specified Wall Thickness; 4) The Qualitative Requirements and Available Surface Quality; 5) The Requirements for Non-destructive Testing; 6) Other special requirements.
4. Steel Grade
Stainless steel grade of 304, 304H, 304L, 316, 316L, 321, 310, etc. in accordance with ASTM/ASME A182, astm/ASME A276, ASTM/ASME A312 and other standards.
5. Manufacturing Process
The manufacturing process is cold manufacturing of seamless steel tubes.
6. Size
The outer diameter is 4 mm-10 mm and the wall thickness is 0.5 mm-2.5 mm, with a small number of sizes (including small diameter, wall thickness, and large wall thickness) specified in the contract.
7. Manufacturing Defects
The manufacturing defects of seamless steel tubes delivered shall not exceed the allowable values specified in DIN 17459.
8. Surface Quality
The surface quality of the seamless steel tubes delivered shall meet the requirements specified in DIN 17458.
9. Non-destructive Testing
The requirements for non-destructive testing for the seamless steel tubes shall meet the requirements specified in DIN 2391.
10. Packing
The packing of the seamless steel tubes shall comply with the requirements specified in DIN 17459.
11. Marking
The marking of the seamless steel tubes delivered shall meet the requirements specified in DIN 17459.
12. Quality Certificate
The quality certificate of the seamless steel tubes shall meet the requirements specified in DIN 17459.
13. Acceptance Inspection
The acceptance inspection of the seamless steel tubes shall be carried out according to the related standards, and the results of the acceptance inspection shall be used as the basis for acceptance or rejection of the products.
In conclusion, this delivery technical condition is applicable to Austenitic Stainless Steel Seamless Round Steel Tubes with Special Requirements in accordance with DIN 17458-1985. All deliveries are subject to the above-mentioned requirements and must comply with the relevant standards. The order containing should include all required information, the steel grade, the manufacturing process, the size. The manufacturing defects, surface quality, non-destructive testing, packing, marking, and quality certificate must meet the requirements specified in DIN 17459. The acceptance inspection shall be carried out in accordance with the related standards and the results shall be used as the basis for acceptance or rejection.
