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NXF UNS S31603 Stainless Steel 316L OD DN15-1200 Class 3000-9000 Forging Technology Threaded 90/45 Degree Elbow
2026-07-14 15:04 NXF GROUP
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Product Description
316L Introduction
Grade 316 is the standard molybdenum-bearing grade, second in importance to 304 amongst the austenitic stainless steels. The molybdenum gives 316 better overall corrosion resistant properties than Grade 304, particularly higher resistance to pitting and crevice corrosion in chloride environments.Grade 316L, the low carbon version of 316 and is immune from sensitization (grain boundary carbide precipitation). Thus it is extensively used in heavy gauge welded components (over about 6mm). There is commonly no appreciable price difference between 316 and 316L stainless steel.
The austenitic structure also gives these grades excellent toughness, even down to cryogenic temperatures.
Compared to chromium-nickel austenitic stainless steels, 316L stainless steel offers higher creep, stress to rupture and tensile strength at elevated temperatures.
316L Stainless Steel Threaded 90/45 Degree Elbow Introduction
Forged threaded elbows are the core pipe fittings used in pipeline systems to change the direction of the pipeline. They are
manufactured through forging technology and achieve pipeline redirection through a threaded connection method. They possess the characteristics of high strength, high sealing performance, and adaptability to complex working conditions. Basic definition: It is a type of forged pipe fitting. It is formed through hot forging or cold forging processes.
manufactured through forging technology and achieve pipeline redirection through a threaded connection method. They possess the characteristics of high strength, high sealing performance, and adaptability to complex working conditions. Basic definition: It is a type of forged pipe fitting. It is formed through hot forging or cold forging processes.
Both ends or one end is provided with threads (such as NPT, BSPT, BSPP, etc. standards) for connecting to the pipeline. It can achieve sealing without welding, and is suitable for scenarios with requirements for fire prevention, explosion protection, and high-altitude operations.
Angle classification: Commonly available in 45° and 90° specifications. Customization for non-standard angles such as 60° is also possible according to engineering requirements.
Material classification: The mainstream materials include stainless steel (such as 201, 304, 316, etc., with strong corrosion resistance), carbon steel (high strength, suitable for general working conditions), and alloy steel (able to withstand high temperatures and pressures, used in special industrial scenarios) .
Pressure rating: Covers multiple pressure levels from low pressure (150 PSI) to ultra-high pressure (2000 LB and above), suitable for various pressure-demanding pipeline systems.
316L Stainless Steel Threaded 90/45 Degree Elbow Drawing
316L Chemical Composition and Mechanical Properties
Factory and Product Pictures
316L Stainless Steel Threaded 90/45 Degree Elbow Product Pictures
316L PMI spectral testing proves
Video of a customer visiting us
Product processing
316L Stainless Steel Threaded 90/45 Degree Elbow Product Processing
1. Forging Process: Core Plastic Deformation Technology
Utilize hot forging (heating at 1000-1300°C, suitable for large sizes and high pressure ratings, preventing cracking) or cold forging (forging at room temperature, with an accuracy of ±0.05mm, thread reaching 6H grade, suitable for small sizes and high precision requirements). Through a press or forging hammer, the metal is densified to enhance its pressure resistance. Innovative techniques such as eccentric forging can balance the wall thickness of the inner and outer rings of large-diameter bends, avoiding pressure-bearing risks.
2. Heat Treatment for Strengthening: Key to Performance Enhancement
Annealing: Heat at 650-1150°C and then cool slowly to eliminate internal stress and enhance corrosion resistance (for stainless steel, it can withstand salt spray for over 5000 hours); Normalizing: Heat at 900-1000°C and cool naturally to refine grains and enhance tensile strength (for carbon steel, it can reach 520 MPa+); Quenching + Tempering: Special for alloy steel, to enhance hardness and wear resistance, suitable for extreme working conditions such as oil, high-pressure gas, etc.
3. Precision Machining and Surface Treatment
Thread Machining: Machining by CNC lathe, with thread accuracy of 5g/6g level, compatible with NPT/BSPT/GB standards. High-end products adopt sealing surface reinforcement to withstand CL9000-level ultra-high pressure; Surface Treatment: For stainless steel, it is passivated (forming an oxide chromium film, resistant to strong corrosion); for carbon steel, it is galvanized/nickel-plated (prevents oxidation and enhances wear resistance); sandblasting for rust removal (provides a clean base for coating).
4. Full Process Quality Control
From the detection of raw material composition/mechanical properties, to the monitoring of key indicators in the forging, heat treatment, and processing stages (wall thickness, thread accuracy, etc.), to the hydraulic test of the finished product (holding pressure at 1.5 times the working pressure for 30 minutes), non-destructive testing (ultrasonic/magnetic particle detection for internal defects), and size accuracy testing, to ensure zero-defect delivery of the product. This process increases the tensile strength of the elbow by 20% - 30% compared to the castings, and its pressure resistance reaches levels of CL3000 - CL9000. The threaded connection has no welding risks and is suitable for complex scenarios such as fire prevention, explosion prevention, and high-altitude operations.
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 quality certificate 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
Company Profile
New XiFei (SuZhou) Business Co.,Ltd is one of the leading and most respected manufacturers in China. Our products include metals, machinery, containers, construction materials, mechanical products, electrical systems, and medical accessories. Established in 1980, XIFEI has been working diligently ever since to embrace the needs of our global customer base.We work to ensure absolute customer satisfaction. Our team has dedicated itself to perfecting our three core components, "Service, Management and Craftsmanship."
316L Stainless Steel Threaded 90/45 Degree Elbow 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?
Our advantage:3S Service (Small Quantity/Short Time/Special Material) We have our own factories, quality can be controlled seriously.We Specialize in manufacturing about 21 years.We have professional testing department and testing equipment.
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
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?
Our advantage:3S Service (Small Quantity/Short Time/Special Material) We have our own factories, quality can be controlled seriously.We Specialize in manufacturing about 21 years.We have professional testing department and testing equipment.
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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