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NXF UNS S30400 ASTM 304/JIS 304/EN 1.4301 DN6-1200 Class3000-9000 Stainless Steel 304 Forged Fitting Threaded Hex Head Plug
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 Hex Head PlugIntroduction
1.Structural Characteristics
Threaded hex head plug is a pipe closure fitting with external thread and hexagonal head. The hexagon head is designed for wrench clamping, enabling easy screwing in and out. It seals pipe or equipment threaded ports without welding, featuring a compact and solid structure.
2.Installation Features
Installation is convenient and efficient. Workers use standard hex wrench to screw the plug into matching internal threaded openings. No welding operation is needed. It supports repeated disassembly for system inspection, maintenance and medium sampling.
3.Application Scope
It is widely used to seal spare ports on pipelines, valves, pressure vessels and hydraulic equipment. Applicable for water, oil, gas and general chemical media. It fits low and medium pressure working conditions for both temporary and permanent sealing.
4.Sealing Performance & Limitations
Sealing is achieved by thread matching, together with PTFE tape or thread sealant as auxiliary. It performs reliably under stable pressure. Not suitable for scenarios with severe vibration, drastic pressure change or strong corrosive media, which may cause thread looseness and leakage.
5.Standards & Material Options
Common standard is ASME B16.11. Available materials include carbon steel, stainless steel and alloy steel. Thread types contain NPT, BSPT and BSPP. Optional surface treatments such as blackening, galvanizing or anti-rust oil can be applied for rust protection.
Customer visit to the factory video
Threaded Hex Head Plug Produce Processing
1.Raw Material Inspection and Cutting
Inspect solid bar raw material to verify chemical composition and mechanical properties in line with relevant standards. Check the surface for cracks, pits and other defects. Cut bars into blanks with proper machining allowance per drawing requirements.
2.Heading / Hot Forging Forming
Heat the blank to specified forming temperature. Upset one end to shape the hexagonal head and rough workpiece profile. Control heating temperature and forming pressure strictly to avoid internal defects and incomplete hexagon forming.
3.Heat Treatment
Implement normalizing or tempering after forming. Remove residual forming stress, refine grain structure and adjust hardness. Prevent workpiece deformation in subsequent machining and improve overall mechanical performance.
4.Precision Machining
Adopt CNC turning to machine outer cylinder and external threads. Machine the hex head to meet dimensional and flatness tolerance. Deburr sharp edges to ensure all dimensions comply with drawing specifications.
5.Surface Treatment
Clear machining chips and burrs. Perform shot blasting to eliminate oxide scales. Apply surface finishing including blackening, galvanizing or anti-rust oil coating according to customer requirements for corrosion protection.
6.Final Inspection and Marking
Carry out thread gauge test, dimensional measurement and visual inspection. Check thread fit and surface quality. Mark material grade, heat number and standard on qualified products, then pack for delivery.
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