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NXF UNS S30400 ASTM 304/JIS 304/EN 1.4301 DN15-1200 Class150-1500 Stainless Steel 304 Forged Fitting Slip on Flanges
2026-10-12 20:43 NXF GROUP
1
Products Description
Stainless Steel 304 Introduction
Stainless Steel 304 (also known as AISI 304 or EN 1.4301) is the most widely used austenitic stainless steel in the world,
commonly referred to as "18/8" because of its nominal composition of 18% chromium and 8% nickel, with the balance being iron plus small amounts of carbon, manganese, and silicon. It offers an excellent balance of corrosion resistance, formability, and weldability, making it the default choice for general-purpose applications. In its annealed condition, it is essentially non-magnetic and maintains good toughness across a wide temperature range, including cryogenic service.
Typical uses include kitchen equipment, food and beverage processing, architectural panels, chemical containers, water piping, automotive trim, and fasteners. It performs well in atmospheric, fresh-water, and mildly chemical environments.
Its main limitation is susceptibility to chloride-induced pitting and crevice corrosion, so it is not recommended for marine,
coastal, or high-salt service — for those environments.
commonly referred to as "18/8" because of its nominal composition of 18% chromium and 8% nickel, with the balance being iron plus small amounts of carbon, manganese, and silicon. It offers an excellent balance of corrosion resistance, formability, and weldability, making it the default choice for general-purpose applications. In its annealed condition, it is essentially non-magnetic and maintains good toughness across a wide temperature range, including cryogenic service.
Typical uses include kitchen equipment, food and beverage processing, architectural panels, chemical containers, water piping, automotive trim, and fasteners. It performs well in atmospheric, fresh-water, and mildly chemical environments.
Its main limitation is susceptibility to chloride-induced pitting and crevice corrosion, so it is not recommended for marine,
coastal, or high-salt service — for those environments.
Slip on FlangesIntroduction
1. Structure Design：
Slip On flanges (SO flanges) have a low and short hub with a smooth inner bore. The inner diameter is slightly larger than the outer diameter of the pipe, allowing the flange to slide directly over the pipe end.
2. Welding Method：
SO flanges are fixed by double fillet welding, including both inside and outside welds. Unlike weld neck flanges, they adopt fillet weld connection instead of full penetration butt weld.
3. Installation Feature：
3. Installation Feature：
They are easy to align and install during assembly. The simple structure greatly reduces installation time and construction difficulty compared with WN flanges.
4. Application Scope：
4. Application Scope：
Slip On flanges are widely used for low-pressure and medium-pressure piping systems under normal temperature
conditions. They are commonly applied in water, gas, oil and general industrial pipelines.
5. Product Advantages：
5. Product Advantages：
This type of flange features low cost, good sealing performance and stable mechanical property. It is a cost-effective solution for conventional non-severe working environments.
Slip on Flanges Drawing
Stainless Steel 304 Chemical composition and mechanical properties
Factory and Product Pictures
Slip on Flanges Factory and Product Pictures
Stainless Steel 304 PMI spectral testing proves
Customer visit to the factory video
Slip on Flanges Produce Processing
1. Raw Material Inspection：
All raw steel materials are strictly inspected before production. We check the chemical composition,
mechanical properties and material certificates to ensure compliance with relevant industrial standards, eliminating unqualified raw materials.
mechanical properties and material certificates to ensure compliance with relevant industrial standards, eliminating unqualified raw materials.
2. Blank Forging & Forming：
The qualified steel blanks are heated to the standard temperature and forged into the basic shape of slip on flanges. This process refines the internal grain structure, improving the overall rigidity and structural stability of the flange.
3. Heat Treatment：
Stress relief heat treatment is carried out on forged blanks to eliminate internal forging stress. This step effectively improves the toughness and anti-deformation performance of the flanges, avoiding cracking during subsequent processing and use.
4. Precision CNC Machining：
Professional CNC lathes and drilling machines are used for fine machining, including flange face turning, inner bore processing, bolt hole drilling and chamfering. All dimensions are strictly controlled to meet ASME and international tolerance standards.
5. Non-Destructive Testing：
Complete NDT inspection is conducted on finished flanges, including surface crack detection and internal defect inspection. All potential flaws such as inclusions and porosity are checked to guarantee product quality and safety.
6. Final Inspection & Packaging：
Final inspection covers dimensional accuracy, surface finish, flatness and marking information. Qualified products are stamped with standard marks, coated with anti-rust oil, and packed professionally to prevent damage and rust during long-distance transportation.
Our NXF GROUP advantage as follow
1.Our NXF GROUP have our own factory, and we can control the cost by producing by ourselves. We have a great advantage in price and can give you the lowest price based on best quality.
2.Our NXF GROUP can strictly control the quality. We have production,quality inspection, warehousing and other departments to coordinate and control the quality,Such as PMI and size testing.
3.Our NXF GROUP biggest advantage is 3S service. Small quantity, short time, special materials.
4.Our NXF GROUP have excellent qualitycertificate system and trademark certificate
5.Our NXF GROUP have a comprehensive after-sales service guarantee, such as the transaction guarantee provided by Alibaba International Station, as well as remote technical guidance and services.
6.Our NXF GROUP have a well-established logistics support system that can save you both time and money, providing you with a one-stop service.
3.Our NXF GROUP biggest advantage is 3S service. Small quantity, short time, special materials.
4.Our NXF GROUP have excellent qualitycertificate system and trademark certificate
5.Our NXF GROUP have a comprehensive after-sales service guarantee, such as the transaction guarantee provided by Alibaba International Station, as well as remote technical guidance and services.
6.Our NXF GROUP have a well-established logistics support system that can save you both time and money, providing you with a one-stop service.
Packing & Delivery
Packing
Delivery
Company Profile
New XiFei (SuZhou) Business Co.,Ltd is one of the leading and most respected manufacturers in China. Our products
includemetals,machinery, containers, construction materials, mechanical products, electrical systems, and medical
accessories.Establishedin1980, XIFEI has been working diligently ever since to embrace the needs of our global customer base.We work to ensure absolutecustomer satisfaction. Our team has dedicated itself to perfecting our three core components, "Service, Management andCraftsmanship." Our advantage:3S Service(Small Quantity/Short Time/Special Material).
includemetals,machinery, containers, construction materials, mechanical products, electrical systems, and medical
accessories.Establishedin1980, XIFEI has been working diligently ever since to embrace the needs of our global customer base.We work to ensure absolutecustomer satisfaction. Our team has dedicated itself to perfecting our three core components, "Service, Management andCraftsmanship." Our advantage:3S Service(Small Quantity/Short Time/Special Material).
Certification
FAQ
1. who are we?
We are based in Jiangsu, China, start from 2021,sell to South Asia(30.00%),South America(10.00%),Eastern Europe(10.00%),Mid East(10.00%),Eastern Asia(10.00%),Southeast Asia(5.00%),Africa(5.00%),Central America(5.00%),Northern Europe(5.00%),North America(5.00%),Domestic Market(5.00%). There are total about 101-200 people in our office.
2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
3.what can you buy from us?
Pipe,Flange,Steel plate,Pipe fittings,Alloy products
4. why should you buy from us not from other suppliers?
We are based in Jiangsu, China, start from 2021,sell to South Asia(30.00%),South America(10.00%),Eastern Europe(10.00%),Mid East(10.00%),Eastern Asia(10.00%),Southeast Asia(5.00%),Africa(5.00%),Central America(5.00%),Northern Europe(5.00%),North America(5.00%),Domestic Market(5.00%). There are total about 101-200 people in our office.
2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
3.what can you buy from us?
Pipe,Flange,Steel plate,Pipe fittings,Alloy products
4. why should you buy from us not from other suppliers?
1.Our NXF GROUP have our own factory, and we can control the cost by producing by ourselves. We have a great advantage in price and can give you the lowest price based on best quality.
2.Our NXF GROUP can strictly control the quality. We have production,quality inspection, warehousing and other departments to coordinate and control the quality,Such as PMI and size testing.
3.Our NXF GROUP biggest advantage is 3S service. Small quantity, short time, special materials.
4.Our NXF GROUP have excellent qualitycertificate system and trademark certificate
5.Our NXF GROUP have a comprehensive after-sales service guarantee, such as the transaction guarantee provided by AlibabaInternational Station, as well as remote technical guidance and services.
6.Our NXF GROUP have a well-established logistics support system that can save you both time and money, providing you with aone-stop service.
5. what services can we provide?
Accepted Delivery Terms: FOB,CFR,CIF,EXW,FCA,DDP,DDU；
Accepted Payment Currency:USD,EUR,CAD,HKD,CNY;
Accepted Payment Type: T/T,L/C,D/P D/A,Credit Card,PayPal;
Language Spoken:English,Chinese,Spanish,Russian
2.Our NXF GROUP can strictly control the quality. We have production,quality inspection, warehousing and other departments to coordinate and control the quality,Such as PMI and size testing.
3.Our NXF GROUP biggest advantage is 3S service. Small quantity, short time, special materials.
4.Our NXF GROUP have excellent qualitycertificate system and trademark certificate
5.Our NXF GROUP have a comprehensive after-sales service guarantee, such as the transaction guarantee provided by AlibabaInternational Station, as well as remote technical guidance and services.
6.Our NXF GROUP have a well-established logistics support system that can save you both time and money, providing you with aone-stop service.
5. what services can we provide?
Accepted Delivery Terms: FOB,CFR,CIF,EXW,FCA,DDP,DDU；
Accepted Payment Currency:USD,EUR,CAD,HKD,CNY;
Accepted Payment Type: T/T,L/C,D/P D/A,Credit Card,PayPal;
Language Spoken:English,Chinese,Spanish,Russian
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