Standard No.:	NB/T 47048-2025
English Name:	Spiral Plate Heat Exchanger
Chinese Name:	螺旋板式热交换器
Professional Classification:	NB    Professional Standard - Energy
Issued on:	2025-09-28
Implemented on:	2026-3-28
Status:	to be valid
Superseding:	NB/T 47048-2015 Spiral plate heat exchanger
Target Language:	English
File Format:	PDF
Word Count:	42500 words
Translation Price(USD):	1275.0
Delivery:	via email in 1~10 business day

NB/T 47048-2025 Spiral Plate Heat Exchanger English, Anglais, Englisch, Inglés, えいご This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered. ICS 27.060 J 98 Professional Standard of the People’s Republic of China NB/T 47048-2025 Spiral Plate Heat Exchanger 螺旋板式热交换器 (English translation) Issue date: 2015-11-24 Implementation date: 2025-11-24 Issued by the National Energy Administration Contents 1 Scope 2 Normative References 3 Terms and Definitions 4 General Requirements 5 Materials 6 Design 7 Manufacturing, Inspection, and Acceptance 8 Energy Efficiency Evaluation Appendix A (Informative) Relevant Content on Some Non-Typical Spiral Body Geometric Designs Spiral Plate Heat Exchanger 1 Scope 1.1 This document specifies the material, design, manufacturing, inspection, and acceptance requirements for spiral plate heat exchangers. 1.2 It applies to detachable and non-detachable spiral plate heat exchangers: ‌Type I‌: Both media flow spirally. ‌Type II‌: Crossflow of both media. ‌Type III‌: Mixed flow. ‌Type IV‌: Tower-mounted. 1.3 Materials: Carbon steel, low-alloy steel, austenitic stainless steel, duplex stainless steel, nickel-based alloys, and titanium (titanium alloys). 1.4 Technical limits: Nominal diameter (DN) ≤ 3000 mm. Design pressure (P) ≤ 4.0 MPa. Product of DN (mm) and P (MPa) ≤ 4800. 1.5 For non-compliant cases, refer to this document. 1.6 Design temperature range per material standards. When gaskets are used, the temperature must comply with gasket specifications. 2 Normative References The following documents are indispensable for the application of this document. For dated references, only the cited version applies. For undated references, the latest version (including amendments) applies. GB/T 150.1~150.4-2024 Pressure Vessels GB/T 151 Heat Exchangers GB 699 High-Quality Carbon Structural Steel GB/T 702 Hot-Rolled Steel Bars—Dimensions, Shapes, Mass, and Tolerances GB/T 713.1~7 Steel Plates and Strips for Pressure Equipment GB/T 912 Hot-Rolled Carbon Steel and Low-Alloy Steel Sheets and Strips GB/T 2054 Nickel and Nickel Alloy Plates GB/T 2882 Nickel and Nickel Alloy Tubes GB/T 3077 Alloy Structural Steel GB/T 3274 Hot-Rolled Carbon Steel and Low-Alloy Steel Plates and Strips GB/T 3280 Cold-Rolled Stainless Steel Plates and Strips GB/T 3621 Titanium and Titanium Alloy Plates GB/T 3623 Titanium and Titanium Alloy Wires GB/T 3624 Seamless Titanium and Titanium Alloy Tubes GB/T 3625 Titanium and Titanium Alloy Tubes for Heat Exchangers and Condensers GB/T 4237 Hot-Rolled Stainless Steel Plates and Strips GB 4732.1~6-2024 Analysis Design of Pressure Vessels GB/T 8163 Seamless Steel Tubes for Fluid Transport GB/T 9948 Seamless Steel Tubes for Petroleum Cracking GB/T 12771 Stainless Steel Welded Tubes for Fluid Transport GB 13149 Welding Technology for Titanium and Titanium Alloy Clad Plates GB 13296 Stainless Steel Seamless Tubes for Boilers and Heat Exchangers GB/T 13814 Nickel and Nickel Alloy Welding Electrodes GB/T 14845 Titanium Plates for Plate Heat Exchangers GB/T 14976 Stainless Steel Seamless Tubes for Fluid Transport GB/T 15823 Non-Destructive Testing—Helium Leak Detection Method GB/T 15620 Nickel and Nickel Alloy Welding Wires GB/T 16253 Pressure Vessel Steel Castings GB/T 16598 Titanium and Titanium Alloy Discs and Rings GB/T 21832.1 Duplex Stainless Steel Welded Tubes—Part 1: Tubes for Heat Exchangers GB/T 21832.2 Duplex Stainless Steel Welded Tubes—Part 2: Tubes for Fluid Transport GB/T 21833.1 Duplex Stainless Steel Seamless Tubes—Part 1: Tubes for Heat Exchangers GB/T 21833.2 Duplex Stainless Steel Seamless Tubes—Part 2: Tubes for Fluid Transport GB/T 24593 Austenitic Stainless Steel Welded Tubes for Boilers and Heat Exchangers GB/T 25198 Pressure Vessel Heads HG/T 2054 Enameled Equipment—Clamps HG/T 2806 Code for Fabrication of Austenitic Stainless Steel Pressure Vessels HG/T 20582 Code for Strength Calculation of Steel Chemical Containers HG/T 20592~20635 Steel Pipe Flanges, Gaskets, and Fasteners JB/T 4756-2006 Nickel and Nickel Alloy Pressure Vessels JB/T 10379-2022 General Test Methods for Thermal Performance and Fluid Resistance Characteristics of Heat Exchangers NB/T 10558 Coating and Transportation Packaging for Pressure Vessels NB/T 11270-2023 Titanium Pressure Vessels NB/T 47002.1~4 Clad Plates for Pressure Vessels NB/T 47008 Carbon Steel and Alloy Steel Forgings for Pressure Equipment NB/T 47009 Low-Alloy Steel Forgings for Low-Temperature Pressure Equipment NB/T 47010 Stainless Steel and Heat-Resistant Steel Forgings for Pressure Equipment NB/T 47013.1 Non-Destructive Testing of Pressure Equipment—Part 1: General Requirements NB/T 47013.2 Non-Destructive Testing of Pressure Equipment—Part 2: Radiographic Testing NB/T 47013.3 Non-Destructive Testing of Pressure Equipment—Part 3: Ultrasonic Testing NB/T 47013.4 Non-Destructive Testing of Pressure Equipment—Part 4: Magnetic Particle Testing NB/T 47013.5 Non-Destructive Testing of Pressure Equipment—Part 5: Penetrant Testing 3 Terms and Definitions Terms and definitions established in GB 150 and the following apply to this document. 3.1 ‌Working Pressure‌ The maximum pressure at the top of the spiral plate heat exchanger under normal operating conditions. 3.2 ‌Design Pressure‌ The set maximum pressure at the top of the spiral plate heat exchanger, used as a basic design load condition with the corresponding design temperature, and not less than the working pressure. 3.3 ‌Calculation Pressure‌ The pressure used to determine component thickness under the corresponding design conditions, including additional loads such as static fluid pressure. 3.4 ‌Test Pressure‌ The pressure at the top of the spiral plate heat exchanger during hydraulic or leak tests. 3.5 ‌Metal Temperature‌ The average temperature across the metal section of the spiral plate heat exchanger component. 3.6 Design temperature The metal temperature of the components of a spiral plate heat exchanger under normal operating conditions. The design temperature and design pressure together serve as the design load conditions. 3.7 Test temperature The metal temperature of the shell components of a spiral plate heat exchanger during pressure testing or leak testing. 3.8 Calculated thickness The thickness obtained from the corresponding formulas in this document or GB 150, JB/T 4745. If necessary, other loads (see 4.3.2) shall also be considered. For components under external pressure, it is the minimum thickness required to meet stability requirements; for sealing components, it is the thickness required to meet stiffness (deformation) requirements. 3.9 Design thickness The sum of the calculated thickness and corrosion allowance.