Phone/Whatsapp:+8613917160311
Email: info@nxf-group.com
Email: Andrew@nxf-group.com
Email: Alice@nxf-group.com
NXF UNS S30400 ASTM 304/JIS 304/EN 1.4301 DN15-1200 Class150-2500 Stainless Steael 304 Forged Fitting Threaded Flanges
Stainless Steel 304 Introduction
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.
Threaded Flanges Introduction
designed for thread connection with pipes. Unlike welding flanges, they adopt an integral threaded design without welding grooves, featuring a simple and compact structure, small overall volume, and lightweight advantages. This structural design avoids welding deformation and welding stress, ensuring high structural integrity and neat appearance of the flange body.
3. Applicable Working Conditions：
4. Material Selection and Performance：
and other metal materials to adapt to different medium environments. Stainless steel threaded flanges excel in corrosion
resistance and oxidation resistance, suitable for chemical and marine pipelines; carbon steel threaded flanges have high
mechanical strength and cost-effective performance, meeting the requirements of conventional industrial and civil pipeline projects. All materials undergo strict quality inspection to ensure tensile strength and structural stability.
5. Sealing Performance and Application Value：
Customer visit to the factory video
Stainless Steel 304Threaded Flanges Produce Processing
1.Raw Material Selection & Inspection:
High‑quality stainless steel bars or forgings of grade 304 are selected as raw materials. Each batch is inspected by XRF spectrometer to verify chemical composition, to make sure material fully complies with ASTM standards. Unqualified raw materials will be rejected before entering production.
2.Forging & Rough Machining:
The qualified material is forged under high temperature to obtain solid flange blanks. Forging improves internal metal density and mechanical strength. After forging, rough turning is carried out to preliminarily shape the outer diameter, thickness and face of the flange blank.
3.Precision CNC Machining:
CNC lathe and machining center are applied for precision processing. Key dimensions including flange outer diameter, bolt hole circle, thickness, and threaded bore are strictly machined according to drawing requirements. The internal thread is processed with high precision to guarantee tight pipe‑thread connection.
4.Heat Treatment:
Solution annealing treatment is performed for stainless steel threaded flanges. This process eliminates internal stress generated from forging and machining, restores corrosion resistance and ductility of 304 stainless steel, and stabilizes overall mechanical performance.
5.Surface Treatment & Full Inspection:
The flange surface is ground to remove burrs and machining marks. Dimensional inspection, thread‑gauge checking and visual inspection are implemented. We check thread integrity, flatness of sealing face and surface defects. All defective products are excluded.
6.Marking, Packaging & Delivery:
Qualified threaded flanges are permanently marked with material grade, size, standard and heat number. Products are packed with anti‑rust paper and put into wooden cases to avoid scratch and corrosion during ocean transportation, ready for shipment.
Our NXF GROUP advantage as follow
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.
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).
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?
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