This standard specifies dimension, shape, weight, technical requirements, test methods, inspection rules, packing, marking and quality certificate of welded steel pipes for low pressure liquid delivery.
This standard is applicable to electric-welding longitudinal-seam steel pipe, submerged arc-welding longitudinal-seam (SAWL) steel pipe and submerged arc-welding helical-seam (SAWH) steel pipe for low pressure liquid delivery of water, air, heating steam, fuel gas, etc., and makes the labeling on respective requirements for them; non-labeled requirements are applicable to high-frequency electric-welding longitudinal-seam steel pipe, submerged arc-welding longitudinal-seam steel pipe and submerged arc-welding helical-seam steel pipe.
1 Scope 2 Normative References 3 Order Content 4 Dimension, Shape and Weight 4.1 Diameter and Wall Thickness 4.2 Length 4.3 Bending 4.4 Out-of-roundness 4.5 Pipe End 4.6 Weight 5 Technical Requirements 5.1 Designations and Chemical Compositions of Steels 5.2 Manufacturing Process 5.3 Delivery State 5.4 Mechanical Property 5.5 Technical Property 5.6 Hydraulic Test 5.7 Surface Quality 5.8 Steel Pipe Butting 5.9 Galvanized Zinc Coating 5.10 Other Requirements 6 Test Method 7 Inspection Rules 7.1 Inspection and Acceptance 7.2 Lot Grouping Rules 7.3 Sampling Quantity 7.4 Reinspection and Judgment Rules 8 Packing, Marking and Quality Certificate 8.1 Marking on Steel Pipes 8.2 Packing and Quality Certificate of Steel Pipes Appendix A (Informative) Dimensions of Steel Pipes Whose Pipe Ends are Connected by Thread or Groove Appendix B (Normative) Determination of Zinc Coating Weight - Antimonic Chloride Method Appendix C (Normative) Adherence Test of Zinc Coating - Cupric Sulfate Immersion Method
This standard specifies dimension, shape, weight, technical requirements, test methods, inspection rules, packing, marking and quality certificate of welded steel pipes for low pressure liquid delivery.
This standard is applicable to electric-welding longitudinal-seam steel pipe, submerged arc-welding longitudinal-seam (SAWL) steel pipe and submerged arc-welding helical-seam (SAWH) steel pipe for low pressure liquid delivery of water, air, heating steam, fuel gas, etc., and makes the labeling on respective requirements for them; non-labeled requirements are applicable to high-frequency electric-welding longitudinal-seam steel pipe, submerged arc-welding longitudinal-seam steel pipe and submerged arc-welding helical-seam steel pipe.
Contents of GB/T 3091-2015
1 Scope
2 Normative References
3 Order Content
4 Dimension, Shape and Weight
4.1 Diameter and Wall Thickness
4.2 Length
4.3 Bending
4.4 Out-of-roundness
4.5 Pipe End
4.6 Weight
5 Technical Requirements
5.1 Designations and Chemical Compositions of Steels
5.2 Manufacturing Process
5.3 Delivery State
5.4 Mechanical Property
5.5 Technical Property
5.6 Hydraulic Test
5.7 Surface Quality
5.8 Steel Pipe Butting
5.9 Galvanized Zinc Coating
5.10 Other Requirements
6 Test Method
7 Inspection Rules
7.1 Inspection and Acceptance
7.2 Lot Grouping Rules
7.3 Sampling Quantity
7.4 Reinspection and Judgment Rules
8 Packing, Marking and Quality Certificate
8.1 Marking on Steel Pipes
8.2 Packing and Quality Certificate of Steel Pipes
Appendix A (Informative) Dimensions of Steel Pipes Whose Pipe Ends are Connected by Thread or Groove
Appendix B (Normative) Determination of Zinc Coating Weight - Antimonic Chloride Method
Appendix C (Normative) Adherence Test of Zinc Coating - Cupric Sulfate Immersion Method
