Audited Supplier
| Parameter class | Specific parameter |
| Material parameter | Chemical composition: such as 304 containing 18%-20% Cr, 8%-10.5% Ni, C≤0.08%; 316 contains 2%-3% Mo on the basis of 304 |
| Mechanical properties: 304 tensile strength ≥520MPa, yield strength ≥205MPa, elongation ≥40%; 316 Tensile strength ≥620MPa, yield strength ≥310MPa, elongation ≥30% | |
| Dimension parameter | Nominal diameter: DN15, DN20, DN25, DN32, DN40, DN50, DN65, DN80, DN100, etc |
| Outer diameter: such as DN100 seamless elbow may be 108mm or 114mm, etc | |
| Wall thickness: about 3mm-10mm, or follow Sch5s, Sch10s, Sch40s and other wall thickness grades | |
| Bending radius: Long radius R=1.5DN; Short radius R=DN | |
| Angle parameter | Common Angle: 90°, 45°, 180°, special 30°, 60° and so on |
| Pressure rating parameter | PN series: PN2.5, PN6, PN10, PN16, PN25, PN40, etc |
| Class series: Class150, Class300, Class600, etc | |
| Manufacturing and surface treatment parameters | Manufacturing process: push, pressing, forging, casting, etc |
| Surface treatment: pickling, passivation, polishing, surface roughness can reach Ra0.8μm-Ra1.6μm and so on |
| DN | NPS | End outer diameter A series | End outer diameter B series | Long radius from center to end | Short radius from center to end |
| 15 | 1/2 | 21.3 | 18 | 38 | - |
| 20 | 3/4 | 26.9 | 25 | 38 | - |
| 25 | 1 | 33.7 | 32 | 38 | 25 |
| 32 | 1.1/4 | 42.4 | 38 | 48 | 32 |
| 40 | 1.1/2 | 48.3 | 45 | 57 | 38 |
| 50 | 2 | 60.3 | 57 | 76 | 51 |
| 65 | 2.1/2 | 76.1(73) | 76 | 95 | 64 |
| 80 | 3 | 88.9 | 89 | 114 | 76 |
| 90 | 3.1/2 | 101.6 | - | 133 | 89 |
| Name | Long Radius Stainless steel 180 Degree ASTM Butt Weld Seamless Industrial Equal Pipe Bend for Oil and Gas |
| Standard | GB12459,GB/T13401 |
| EN10253-1, EN10253-2 | |
| JIS B2311, B2312, B2313 | |
| DIN2605, DIN2615,DIN2616,DIN2617 | |
| ASME B16.9, ASTM A234, ASTM A420, ANSI B16.9, B16.25,B16.28, MSS SP-75 | |
| Angle | 45/90/180° |
| Thickness | 0.5mm-60mm |
| Pressure range | SCH5S,SCH10S,SCH20,SCH30,SCH40,SCH60,SCH80,SCH100,SCH120,SCH140,SCH160,XXS |
| Formed type | Ball forming |
| Surface type | Sand blasting, Sand rolling, Acid cleaning |
| Size | DN15-DN1200 |
| End | Bevel Ends , Plain Ends |
| Connection type | Weld |
| Material | SS304/SS316L |
| Application | Chemical , power, construction, potroleum, gas, water, steam, |
| Special Design | Contact Us |
| Customized Size | Contact Us |
| Warranty | 1 year |
| Package | Cartons, pallet, cases |
| Production period | In 15-60 days upon order quantity |
| Payment term | LC, T/T, Western Union, Small-amount payment |
| Certificate | ISO14001,ISO9001,ASME,CCC,CE |
| Closest port for shipment | shanghai |
| Advantages | 1. Customerized dimensions to meet different requirement 2. quality control from raw materials to the final products 3. Abundant stock 4.Rich export experience 5. Reliable shipping forwarder |
TOBO INDUSTRY (SHANGHAI) CO., LTD Located in Baolong Center, Jiading District, Shanghai, the company has 5 factories to provide customers with the products they need, and the group factory covers an area of 800 acres As a Top 10 in the field of pipe flange manufacturing, the company has been committed to providing high-quality pipe flanges to customers around the world for many years. Since its establishment in 1984, the company has stood out in the fierce market competition by virtue of its profound understanding of the industry and continuous technological innovation.
The company has 15 sets of advanced production equipments and 6 product production lines. From raw material inspection to product molding, every step of the process strictly follows international standards and industry norms. Our pipe fitting flange products cover a wide range of types and specifications, which can meet the diversified needs of different customers in the fields of petroleum, chemical industry, electric power, construction and so on. The quality of our products is stable and reliable, with excellent performance in key performance indicators such as corrosion resistance and compression resistance, which are trusted by our customers.
In terms of product research and development, the company has its own team of engineers, who have been engaged in research and development positions for 5-8 years, and are able to solve the problems and difficulties we may encounter in product production and sample processing in real time.
In addition to product quality and technological innovation, the company also focuses on customer service. We have established a perfect pre-sale, sale and after-sale service system to provide customers with all-round support. Whether it is product consultation, order processing or after-sales maintenance, we can make our customers feel our professionalism and attentiveness.
Looking to the future, TOBO INDUSTRY (SHANGHAI) CO., LTD. will continue to uphold the business philosophy of "quality first, customer first, innovation and development", and constantly improve its own strength to provide customers around the world with better quality pipe fitting flange products and services, and contribute more to the development of the industry.
How do we determine whether the material of stainless steel elbow is qualified?
Generally, it can be judged by the material testing report to see whether the content of the elements in the report is in line with the corresponding material standards. You can also use spectral analysis and other means of on-site inspection of the material, you can also observe the appearance, hardness test, and other preliminary judgment, but these methods are relatively inexact.
How to express the size of the stainless steel elbow, DN, and inches between how to convert?
Size is usually expressed in nominal diameter (DN), such as DN15, DN20, etc., there will also be an outside diameter × wall thickness of the expression of DN and inch conversion relationship: 1 inch ≈ 25.4mm, for example, DN15 corresponds to 1/2 inch, DN20 corresponds to 3/4 inch.
How to determine the pressure level of a stainless steel elbow?
Mainly based on the design pressure of the piping system, operating temperature, medium characteristics, and other factors to determine. At the same time, we should refer to the relevant standards, such as the PN series (PN2.5, PN6, etc.) or Class series (Class150, Class300, etc.), to select the elbow to meet the system pressure requirements.
What is the difference in the structure of stainless steel elbows with different pressure ratings?
Generally speaking, the higher the pressure rating, the thicker the wall thickness of the elbow, and the higher the strength requirements of the material. Elbows with high-pressure ratings may require more stringent manufacturing processes and quality control to ensure safety and reliability under high pressure.
Does surface finish have an effect on the service life of stainless steel elbows?
There is a great impact. Good surface treatment can effectively prevent elbow surface rust, and corrosion, and reduce wear and tear, thereby extending its service life. For example, elbows with passivation treatment are less likely to rust and have a longer service life than untreated ones in the same environment.
