Introduction of HG20537.1.3.4 Stainless Steel Pipes for Chemical Engineering
1. HG Standards
HG is the industry standard issued by China’s chemical regulatory authority, setting clear guidelines for the design, production, and testing of chemical equipment and pipelines.Due to its authoritative and professional nature, this standard ensures that chemical plants can maintain safe and stable operation of their pipelines even under complex conditions such as corrosion and high pressure.
2. Product Overview
The welding of stainless steel pipes used in our company’s chemical equipment is manufactured strictly in accordance with the HG20537.1.3.4 standard. They are specially designed for the demanding working conditions of chemical equipment. Made of high-quality stainless steel, they possess excellent corrosion resistance, high-temperature resistance, and high-pressure resistance properties. They are the ideal choice for fluid transportation pipelines in the chemical production process.
Specification Parameter
1. Nominal Diameter and Outer Diameter
It covers a full range of specifications, from a nominal diameter of 10mm to 1000mm, and is divided into two categories: international standard outer diameters and domestic standard outer diameters (for example, a nominal diameter of 15mm has an international standard outer diameter of 21.3mm and a domestic standard outer diameter of 18mm; a nominal diameter of 100mm has an international standard outer diameter of 114.3mm and a domestic standard outer diameter of 108mm, etc.). These different sizes and standards can meet the design and installation requirements of various projects.
2. Schedule Number
We offer a wide range of wall thickness options such as SCH 5S, SCH 10S, SCH 20S, SCH 40S, and SCH 80S (for example, a nominal diameter of 20mm, SCH 5S has a wall thickness of 1.6mm, SCH 40S has a wall thickness of 2.9mm; a nominal diameter of 100mm, SCH 20S has a wall thickness of 5.0mm, SCH 80S has a wall thickness of 8.0mm, etc.).
Stainless Steel Pipe for Chemical Engineering Specification Table
| ominal diamete | outside diameter(mm) | wall thickness(mm) | |||||
|---|---|---|---|---|---|---|---|
| Internationally accepted | Widely used domestically | SCH 5S | SCH 10S | SCH 20S | SCH 40S | SCH 80S | |
| 10 | 17.2 | 14 | 1.2 | 1.6 | 2.3 | 3.2 | |
| 15 | 21.3 | 18 | 1.6 | 2 | 2.9 | 3.6 | |
| 20 | 26.9 | 25 | 1.6 | 2 | 2.9 | 4 | |
| 25 | 33.7 | 32 | 1.6 | 2.9 | 3.2 | 4.5 | |
| 32 | 42.4 | 38 | 1.6 | 2.9 | 3.6 | 5 | |
| 40 | 48.3 | 45 | 1.6 | 2.9 | 3.6 | 5 | |
| 50 | 60.3 | 57 | 1.6 | 2.9 | 3.2 | 4.0 | 5.6 |
| 65 | 73 | 76 | 2.0 | 3.2 | 4.5 | 5.0 | 7.1 |
| 76.1 | |||||||
| 80 | 88.9 | 89 | 2.0 | 3.2 | 4.5 | 5.6 | 8 |
| 100 | 114.3 | 108 | 2.0 | 3.2 | 5 | 6.3 | 8.8 |
| 125 | 139.7 | 133 | 2.9 | 3.6 | 5 | 6.3 | 10 |
| 141.3 | |||||||
| 150 | 168.3 | 159 | 2.9 | 3.6 | 5.6 | 7.1 | 11 |
| 200 | 219.1 | 219 | 2.9 | 4.0 | 6.3 | 8.0 | 12.5 |
| 250 | 273 | 273 | 3.6 | 4.0 | 6.3 | 8.8 | 12.5 |
| 300 | 323.9 | 325 | 4.0 | 4.5 | 6.3 | 10.0 | 12.5 |
| 350 | 355.6 | 377 | 4 | 5 | 8 | 12 | |
| 400 | 406.4 | 426 | 4 | 5 | 8 | 12 | |
| 450 | 457 | 480 | 4 | 5 | 8 | 14 | |
| 500 | 508 | 530 | 5 | 6 | 10 | 16 | |
| 600 | 610 | 630 | 6 | 6 | 10 | 18 | |
| 700 | 711 | 720 | 6 | 7 | 12 | 20 | |
| 800 | 813 | 820 | 7 | 8 | 12 | 22 | |
| 900 | 914 | 920 | 8 | 9 | 14 | 25 | |
| 1000 | 1016 | 1020 | 9 | 10 | 14 | 28 | |
Product Advantages
- Superior material: Made of high-quality stainless steel, it has strong resistance to chemical corrosion and is suitable for transporting various media such as acids, alkalis, and salts in chemical equipment.
- Compliant with standards: Fully in line with the HG20537.1.3.4 standards of the chemical industry, the production and inspection processes are rigorous, and the quality is traceable.
- Complete specifications: From small and medium-sized diameters to ultra-large diameters (10mm – 1000mm), from different external diameter series to multiple wall thickness grades, it fully meets the diverse pipeline requirements of chemical equipment, and special specifications can also be customized as needed.
HG20537.1.3.4 Stainless Steel Pipe for Chemical Engineering Mill Test Certificates
All of our company’s HG20537.1.3.4 specification stainless steel pipes for chemical use have passed strict testing and certification. The test certificates detail the material specifications, performance parameters, etc., ensuring compliance with this standard and chemical industry norms, providing quality, safety and compliance guarantees for the application of chemical pipelines.
Manufacturing Processing
- Raw material inspection: Select stainless steel billets that meet the standards, and conduct key tests on chemical composition and mechanical properties to ensure compliance of the raw materials.
- Forming and welding: Process into pipe shapes through forming techniques, and use high-quality welding methods such as argon arc welding to ensure the quality of the weld seams.
- Performance strengthening: After welding, perform heat treatment to optimize the microstructure and enhance mechanical and corrosion resistance properties.
- Rigorous Quality Control: Each product undergoes strict dimensional and visual inspection, and its chemical composition, mechanical properties, and corrosion resistance are tested to ensure that it fully meets all relevant standards.
- Product acceptance: Accept after testing is qualified, and package and deliver in accordance with specifications.
Application Scenarios
It is widely applied in the process pipeline systems of various chemical plants such as petrochemical, coal chemical and fine chemical plants. It can transport high-temperature steam, corrosive solvents, chemical raw materials and other media, providing reliable pipeline support for the stable and safe operation of chemical production.
