NXF UNS NO7718/2.4668/NiCr19NbMo/alloy 718 DN6-1200 Class3000-9000 Nickel Alloy Forged Fitting Threaded Square Head Plug

2026-09-18 17:44 NXF GROUP
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Product Description

Alloy 718 Introduction

Alloy 718/2.4668 is a nickel-chromium-iron alloy with niobium and molybdenum and low contained aluminum and tnum. Excellent mechanical properties in lower temperatures. Excellent corrosion resistance at high and low temperatures
Inconel 718 is a nickel-based super alloy that is well suited for applications requiring high strength in temperature ranges from cryogenic up to 1400°F. Inconel 718 also exhibits excellent tensile and impact strength.

Threaded Square Head Plug Introduction

Threaded Square Head Plug Introduction
1. Basic Definition
Threaded square head plug is a forged pipe fitting with external male thread and square head, designed to block threaded openings on pipelines, valves and equipment.
2. Structural Feature
The square head allows wrench gripping for easy tightening and removal. It transfers high torque effectively and prevents slipping during installation.
3. Thread Standard & Sizes
Threads comply with NPT, BSPT and BSPP standards. Available sizes cover 1/8” to 4”, pressure ratings include 2000LB, 3000LB and 6000LB.
4. Material & Surface Treatment
Materials include A105 carbon steel, 304/304L/316/316L stainless steel and brass. Surface options: nickel plating, hot-dip
galvanizing for corrosion resistance.
5. Product Performance
Precision machined threads ensure reliable sealing without leakage. Forged construction delivers high strength to withstand high pressure and temperature.
6. Application Scope
Widely used in oil & gas, chemical, hydraulic, HVAC and water treatment systems for sealing test ports, spare outlets and
drain ports.
Threaded Square Head Plug Drawing
Alloy 718 Chemical composition and mechanical properties
Factory and Product Pictures
Threaded Square Head Plug Factory and Product Pictures
Alloy 718 PMI spectral testing proves
Customer visit to the factory video



718 Threaded Square Head Plug Produce Processing

1.Raw Material Inspection:
Strict incoming inspection for Inconel 718 bar stock. Check chemical composition, hardness, dimension and surface condition to ensure compliance with industrial standards.
2.Precision Cutting & Trimming:
Cut raw materials into fixed lengths according to processing drawings. Remove burrs and excess material to guarantee uniform blank size.
3.CNC Rough Machining:
Complete preliminary turning for plug body, square head shaping and outer contour processing, reserving precise tolerance for finishing.
4.Precision Thread Machining:
Adopt professional CNC threading process to machine standard NPT/BSPT/BSPP threads. Ensure smooth thread surface, accurate tooth pitch and perfect sealing performance.
5.Deburring & Chamfering:
Remove all sharp edges, burrs and tool marks. Make uniform chamfer on thread ends and square head for smooth installation and assembly.
6.Heat Treatment:
Perform professional heat treatment on Inconel 718 material to improve hardness, mechanical strength, high temperature and pressure resistance.
7.Surface Treatment & Polishing:
Carry out fine polishing and anti-corrosion surface treatment. Optimize surface finish to resist oxidation and extend service life.
8.Final Quality Inspection & Packaging:
Inspect thread tolerance, dimension, surface quality and sealing performance one by one. Qualified products will be cleaned, labeled and vacuum packaged before shipment.

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.
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).
Certification
FAQ
1. who are we?
We are based in Jiangsu, China, start from 2021,sell to South Asia(30.00%),Eastern Asia(10.00%),Mid East(10.00%),Eastern Europe(10.00%),South America(10.00%),Domestic Market(5.00%),North America(5.00%),Northern Europe(5.00%),Central America(5.00%),Africa(5.00%),Southeast Asia(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 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.


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


Phone
+8613917160311
Whatsapp
Whatsapp
+8613917160311
Wechat
Wechat
Inquiry
Email
info@nxf-group.com
Inquiry
Inquiry