Standard No.:	HG/T 20537.4-1992
English Name:	Chemical apparatus of austenitic stainless steel welded pipe technology requirements of large diameter
Chinese Name:	化工装置用奥氏体不锈钢大口径焊接钢管技术要求
Chinese Classification:	G91    Chemical machinery and equipment parts
Professional Classification:	HG    Professional Standard - Chemistry
Issued by:	RCMCI
Issued on:	1993-1-15
Implemented on:	1993-5-1
Status:	valid
Language:	English
File Format:	PDF
Word Count:	3000 words
Price(USD):	374.00
Delivery:	via email in 1 business day

1. Subject Content and Application Scope



This standard specifies the specification, dimension, manufacture process, technical requirements, test methods, inspection rules, marking and packaging and quality certificate with regards to the large caliber welded austenitic stainless steel pipe for chemical, petrochemical and pharmaceutical industries.

This standard is applicable to the large caliber welded austenitic stainless steel pipe for chemical plant installations (hereinafter referred to as large caliber welded pipe), which is produced by the electric arc welding by adding filler metal.



2. Normative References



GB 222 "Method of Sampling Steel for Determination of Chemical Composition and Permissible Variations for Product Analysis"

GB 228 "Tensile Test Method for Metal"

GB 241 "Metal Materials - Tube - Hydrostatic Pressure Test"

GB 232 "Metallic Materials - Bend Test"

GB 2102 "Acceptance, Packing, Marking and Quality Certification of Steel Pipe"

GB 2975 "Rules for Sampling in Mechanical and Technological Testing of Steel Products"

1. Subject Content and Application Scope
2. Normative References
3. Dimension, Appearance and Weight
4. Technical Requirements
5. Test Methods
6. Inspection Rules
7. Packaging, Marking and Quality Certificate
8. Application Requirements
9. Additional Requirements
Appendix A Common Specification for Large-Caliber Welded Austenitic Stainless Steel Pipe of Chemical Plant Installations