DL/T 439-2006 The technical guide for high-temperature bolt of fossil-fired power plant (Text of Document is in English)

01/10/2006

30P

$100.00 USD

Contents
Foreword
1. Scope
2. Normative references
3. Material selection principles
4. Inspection and replacement scrapping
5. Bolt tightening and disassembly
6. Technical file management
Annex A (Informative) Chemical Position and Mechanical Properties of Bolts in Common Use
Annex B (Informative) Heat Treatment Process and Stress Relaxation Curve of Commonly Used Bolt Material
Annex C (Informative) Grain Level, Mechanical Properties and Acceptance Criteria of 20CrlMoIVNbTIB High-Temperature Steel