Question: Which standards should be referred to for determining the wall thickness of pipes used in the chemical industry?

The wall thickness specifications for piping used in the chemical industry can be found in relevant standards such as the **Standard for Welded and Threaded Steel Fittings (GB/T 12459)** and the **Technical Specifications for the Manufacturing of Welded Ring-Joint Steel Pipe Equipment (JB/T 4735)**. At the same time, it is also necessary to select the appropriate wall thickness standard based on the specific application scenarios and requirements. .

The \"Chemical Process Piping Design Manual\" contains relevant standards

This post was last edited by ppipe on 2023-4-19 14:16. These two standards summary specifications are the most authoritative.: Section 3: Calculation and selection of pipe wall thickness in piping design (176) 1. Comparison and engineering application of DN, NPS, De, D, d, ?, dn, Dg, OD, ID, NB pipe diameters (176) 2. Comparison of three commonly used expression methods of steel pipe wall thickness (177) 3. Characteristics of pipe table number Sch? and calculation engineering application (177) 4. Comparison of domestic and foreign standard wall thickness series (180) 5. Plate welded pipes and their wall thickness grades CWP (187) 6. Engineering applications of pressure bearing capacity and wall thickness grades of commonly used plate welded pipes (193) 7. Comparison of outer diameter and wall thickness deviations of domestic and foreign steel pipes and engineering applications (193) 8. ASME B31?3, SH/T3059, GB/T 20801 pipe wall thickness calculation methods (196) 9. Public pipelines and long-distance pipeline wall thickness calculation methods (199) 10. Comparison of calculation methods for wall thickness of various types of pipes at home and abroad (202) 11. Matching design of pipe wall thickness and wall thickness of pipe fittings (203) 12. Stress distribution and calculation method of thick-walled pipes and thin-walled pipes (203) 13. Calculation principle of straight pipe wall thickness calculation method (204) 14. Minimum wall thickness requirements of various types of pipes (205) 15. Determination method of pipe wall thickness grade (207) 16. Comparison of calculation methods of wall thickness of long-distance pipelines in Russia and China (207) 17. Calculation and engineering application of wall thickness of an industrial pipeline (209) 18. Calculation and engineering application of wall thickness of ultra-high pressure pipelines (209) 19. Calculation and engineering application of wall thickness of t≥D/6 pipeline (211) 20. Calculation and engineering application of wall thickness of FRP pipeline (211) 21. Calculation and engineering application of wall thickness of PE pipeline (212) 22. Calculation of wall thickness of non-metallic pipes (213) 23. Pipe strength calculation book (213) Section 4 Calculation of wall thickness and strength of pipe fittings (214) 1. Determination of wall thickness grade of pipe fittings (214) 2. Calculation of wall thickness and strength of elbows or elbows and engineering applications (214) 3. Calculation of wall thickness and strength of mitered elbows (215) 4. Calculation of wall thickness and strength of tees (217) 5. Non-standard reducer strength calculation (218) 6. Flat cover thickness and strength calculation (220) 7. Blind plate thickness calculation and engineering application (221) 8. Flange strength calculation and engineering application (223) 9. Selection of branch pipe connection form and strength calculation engineering application (224) 10. Requirement that branch pipes are directly welded to the main pipe without reinforcement (225) 11. Half pipe joint strength requirements (226) 12. Strength requirements for welded branch pipe stands, threaded branch pipe stands and socket welded branch pipe stands (226) 13. Calculation, installation and engineering application of welded branch pipe reinforcement plates (227) Chapter 4 Selection of pipes and pipe fittings in piping design (232) Section 1 Pipe classification and size (232) 1. Pipe classification (232) 2. Steel pipe size (IPS), nominal diameter (DN), nominal pipe diameter (NPS), outer diameter (OD) and inner diameter (ID) (233) 3. The distinction and engineering application of imperial pipes (large outer diameter pipes) and metric pipes (small outer diameter pipes) (235) 4. Characteristics of the outer diameter series of steel pipes and procurement requirements (236) 5. Comparison of outer diameter series data of metal pipes in various countries (238) 6. Issues that should be paid attention to when selecting metric and imperial pipes (240) 7. Pipe diameter usage restrictions (241) 8. China Petrochemical Industry Standard Carbon Steel, Low Alloy Steel, Alloy Steel, Austenitic Stainless Steel Seamless Steel Pipe Dimensions and Characteristics Data (242) 9. China Petrochemical Industry Standard Welded Steel Pipe Dimensions and Characteristics Data (248) 10. Carbon Steel, Low Alloy Steel, Alloy Steel, and Austenitic Stainless Steel Seamless Steel Pipe Dimensions and Characteristics Data (253) 11. Selection of outer diameter of super large diameter pipes and engineering applications (259) 12. Outer diameter, wall thickness and unit weight of commonly used American standard carbon steel pipes and alloy steel pipes (259) Section 2 Piping design Selection and engineering applications of metal pipes (263) 1. General requirements and principles for pipe selection (263) 2. Manufacturing comparison and engineering applications of seamless steel pipes and welded steel pipes (269) 3. Selection and engineering applications of seamless steel pipes (272) 4. Selection and engineering applications of welded steel pipes (274) 5. Comparison and engineering applications of Pipe and Tube pipes (276) 6. Comparison and engineering applications of ASME B31?3, GB 50316, GB/T 20801, SH/T 3059 pipes (277) 7. GB standards and scope of use of steel pipes of different materials and brands (285) 8. Scope of use of different GB standard steel pipes (285) 9. Comparison of standards and grades of steel pipes commonly used at home and abroad (288) 10. ASTM standards for commonly used steel, nickel, copper, aluminum, titanium and alloy pipes (292) 11. Comparison of chemical composition and mechanical properties of steel pipes commonly used in foreign piping (296) Section 3 Piping Design Selection and Engineering Application of Non-metallic Pipes (309) 1. General requirements for the selection of non-metallic pipes (309) 2. Operating temperatures of commonly used non-metallic materials and reduction of nominal pressure (309) 3. Principles and engineering applications of non-metallic corrosion (310) 4. Corrosion resistance of non-metallic materials to different media (312) 5. Selection table of commonly used non-metallic pipes (313) 6. Suitable physical properties and chemical resistance of thermoplastic materials (316) 7. Connection of non-metallic pipes (317) 8. Selection and engineering application of PVC (polyvinyl chloride, polyvinyl chloride) (319) 9. Selection and engineering application of CPVC [chlorinated polyvinyl chloride, chlorinated polyvinyl chloride (perchlorethylene)] (322) 10. UPVC (unplasticised polyvinyl) Chloride, rigid polyvinyl chloride) selection and engineering application (323) 11. PE (polyethylene, polyethylene) selection and engineering application (324) 12. PEX (cross-linked polyethylene, cross-linked polyethylene) selection and engineering application (325) 13. PP (polypropylene, polypropylene) selection and engineering application (327) 14. Selection and engineering application of PB (polybutylene, polybutylene) (329) 15. Selection and engineering application of ABS (acrylonitrile butadiene styrene, acrylonitrile-butadiene-styrene copolymer) (329) 16. Selection and engineering application of FRP (glass fiber reinforced plastic pipe, glass fiber reinforced plastic pipe) (332) 17. Selection and engineering application of petrochemical standard FRP/PVC (glass fiber reinforced plastic/polyvinyl chloride composite pipe) (332) 18. Selection and engineering application of PP/FRP (polypropylene/glass reinforced plastic composite pipe) (332) 19. Selection and engineering application of steel frame polyethylene composite pipe (333) 20. Selection and engineering application of impermeable graphite (333) 21. Glass tube Pipe) selection and engineering application (334) 22. Ceramic pipe (stoneware pipe) selection and engineering application (334) 23. Self-stressing reinforced concrete pressure pipe selection and engineering application (334) 24. PTFE (polytetrafluoroethylene) and PCTFE (polychlorotrifluoroethylene) selection and engineering application (335) 25. Water supply and drainage pipe selection and engineering application (337) 26. Selection and Engineering Application of Buried Water Supply and Drainage Pipe Materials (340) 27. Common Standard Specifications for Selection of Non-metallic Pipes (342) Section 4 Selection and Engineering Application of Lined Pipes in Piping Design (343) 1. General requirements and principles for the selection of lined pipes (343) 2. Steel-lined rubber pipes (345) 3. Steel-lined glass pipes (346) 4. Glass-lined pipes (347) 5. Plastic lined pipes (347) 6. Rigid polyurethane foam plastic covered pipes (347) Section 5 Piping design: Selection and engineering application of metal hoses (347) 1. Characteristics and uses of metal hoses (347) 2. Purpose and principles of metal hose installation (349) 3. Composition and classification of metal hoses (350) 4. Hose connection and quick connector coupling) (351) 5. Standard specifications for metal hoses (352) 6. Selection and engineering application of metal hoses in a hose station (352) Section 6 Selection and engineering application of pipe fittings in piping design (354) 1. Classification and production process of pipe fittings (354) 2. Standard series of pipe fitting specifications (355) 3. Principles and general requirements for pipe fitting selection (356) 4. Selection and engineering application of pipe connection methods (356) 5. Design and engineering application of branch pipe connectors (365) 6. Comparison and engineering application of pipe fittings in domestic and foreign standards (368) 7. Selection and engineering application of elbows (372) 8. Selection and engineering application of tees and crosses (373) 9. Selection and engineering application of stub-in (375) 10. Selection and engineering application of outlet (376) 11. Selection and engineering application of nipple and variable diameter stub (swage) (376) 12. Selection and engineering application of flange (stub-end) (379) 13. Selection and engineering application of coupling (380) 14. Selection and engineering application of union (380) 15. Selection and engineering application of reducer (381) 16. Selection and engineering application of cap (383) 17. Selection and engineering application of bushing (385) 18. Selection and engineering application of split tee (385) 19. Ferrule Selection and engineering application of clamp connection (385) 20. Selection and engineering application of clamp connection (386) 21. Commonly used ASTM steel, nickel, copper, aluminum, titanium and alloy pipe fittings standards (387) 22. Commonly used national standards and specifications for pipe fittings selection (388) Section 7 Typical working conditions of pipes and pipe fittings and selection of engineering applications (390) 1. Selection and engineering application of oxygen pipes and pipe fittings (390) 2. Selection and engineering application of hydrogen pipes and fittings (393) 3. Selection and engineering application of acetylene pipes and fittings (393) 4. Selection and engineering application of hydrofluoric acid pipes and fittings (394) 5. Selection and engineering application of hydrochloric acid pipes and fittings (396) 6. Selection and engineering application of sulfuric acid pipes and fittings (398) 7. Selection and engineering application of nitric acid pipes and fittings (401) 8. Selection and engineering application of phosphoric acid pipes and fittings (401) 9. Selection and engineering application of acetic acid pipes and fittings (401) 10. Selection and engineering application of NaOH pipes and fittings (401) 11. Selection and engineering application of pipes and fittings under low temperature conditions (402) 12. Selection and engineering application of pipes and fittings for high temperature working conditions (402) 13. Selection and engineering application of pipes and fittings for common public fluid media (403) 14. Selection and engineering application of pipes and fittings for ordinary process fluid media (403) 15. Engineering applications where the compressor does not allow socket welding (404) 16. Whether the steam pipeline tee can be replaced by a welded branch pipe (404) 17. Selection and engineering application of steam and water pipes and fittings in thermal power plants (404) 18. Selection and engineering application of high-temperature steam pipes and fittings in thermal power plants (406) 19. Selection and engineering application of oil pipeline pipes and fittings (407) 20. Selection and engineering application of gas pipeline pipes and fittings (408) 21. Selection and engineering application of urban gas pipes and fittings (410) 22. Selection and Engineering Application of Urban Heating Pipes and Fittings (411) Chapter 5 Piping Design Selection and Engineering Application of Flanges, Fasteners and Gaskets (413) Petrochemical Plant Process Pipeline Installation Design Manual: Plumbing equipment