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Everything You Need to Know About Stainless 317/317L Buttweld Fittings – Premium Quality by Sandvik

Stainless 317/317L Buttweld Fittings are a vital component in piping systems across various high-demand industries. At Sandvik, we deliver top-tier stainless steel solutions engineered to withstand aggressive environments, high temperatures, and corrosive substances. These fittings are crafted from 317 and 317L stainless steel—both molybdenum-bearing austenitic alloys with superior resistance to chemical attack compared to conventional grades like 304 or 316. Designed for durability and performance, our fittings are trusted globally for their precision and long service life.

But what exactly are Stainless 317/317L Buttweld Fittings? These are pipe fittings used to change the direction, branch off, or connect piping in fluid handling systems. They are welded directly to the pipe, creating a seamless, leak-proof joint that ensures high integrity. Grade 317 contains higher molybdenum and chromium levels, making it exceptionally resistant to pitting and crevice corrosion. Grade 317L is a low-carbon version that provides excellent weldability and resistance to intergranular corrosion after welding. Together, they offer unmatched reliability in extreme service conditions.

One of the major advantages of Stainless 317/317L Buttweld Fittings is their ability to resist corrosion in harsh environments, including those exposed to sulfuric, acetic, and tartaric acids. These fittings also maintain strength at elevated temperatures, making them ideal for heat exchanger and chemical processing applications. With their excellent weldability and formability, installation is smooth and cost-effective. Additionally, the low carbon content in 317L reduces carbide precipitation during welding, protecting the structure of the metal and ensuring longer operational life.

Sandvik stands out as one of the most trusted Stainless 317/317L Buttweld Fittings Manufacturers thanks to our commitment to quality, precision engineering, and timely delivery. Our fittings are made in compliance with international standards, making them a preferred choice for global infrastructure and industrial projects.

Applications for these fittings span multiple industries. In the chemical processing sector, they handle aggressive chemicals with ease. In the pulp and paper industry, they resist corrosive bleaching agents. They are also heavily used in marine environments, food processing, power generation, oil and gas, and pharmaceuticals. Anywhere high corrosion resistance and high performance are needed, these fittings deliver exceptional results.

As reliable Stainless 317/317L Buttweld Fittings Suppliers, we offer a comprehensive range of fitting types to suit various system requirements. Some of the most in-demand types include:

Elbows: Used to change the flow direction in piping systems. Available in 45° and 90° variants for smooth directional transitions.

Tees: Used for branching pipelines. Equal and reducing tees ensure optimal fluid distribution.

Reducers: Connect pipes of different diameters. Concentric and eccentric reducers maintain steady flow and pressure control.

Caps: Used to seal pipe ends, ensuring system closure and protection from contamination or debris.

Stub Ends: Used with lap joint flanges for easy disassembly in maintenance or inspection processes.

Being one of the leading Stainless 317/317L Buttweld Fittings Stockists, Sandvik ensures a consistent inventory to meet urgent and large-volume project needs. Our supply chain is robust, enabling fast turnaround and global shipping.

For businesses looking for reliable Stainless 317/317L Buttweld Fittings Exporters, Sandvik delivers products that exceed expectations. Our customer-centric approach, backed by technical expertise and global reach, makes us the go-to source for superior stainless steel fittings.

Whether your project demands strength, corrosion resistance, or precision engineering, Sandvik has the solution. Our Stainless 317/317L Buttweld Fittings provide the backbone for safe, efficient, and long-lasting piping systems worldwide.

Specification of Stainless Steel 317/317L Buttweld Fittings

Standards : ASTM, ASME
Designation : A 403, SA 403
Dimension Standard : ASME/ANSI B16.9, ASME B16.28, MSS-SP-43
Grade : Stainless steel 304 Buttweld Pipe Fittings, SS 304 Butt weld
Type : Seamless, Welded
Thickness : Sch 5s, Sch 10s, Sch 40s, Sch 80s, Sch 160s, Sch XXS
Size : 1/2" to 24"
Two Joint / Two Halve 304 Butt weld Fittings Size : 6" to 48"
Types of Butt weld Fittings : Equal Tee, Nipple, Long Radius Elbow, Reducing Tee, Elbows, Swage Nipple, Short Radius Elbow, Reducer, Barrel Nipple, 90 Deg Elbow, Concentric Reducer, Reducing Nipple, 45 Deg Elbows, Eccentric Reducer, Bend, 180 Deg Elbow, End Cap, 1D Elbow, 3D Elbow, Stubend, 5D Elbow, Cap, Piggable Bend, Long Stubend, Tee, Short Stubend, Long Radius Bend

Equivalent Grades of Stainless Steel 317/317L Buttweld Fittings

STANDARD UNS WNR. EN JIS
SS 317 S31700 1.4449 - SUS 317
SS 317L S31703 1.4438 X2CrNiMo18-15-4 SUS 317L

Chemical Composition of Stainless Steel 317/317L Buttweld Fittings

Grade C Mn Si P S Cr Mo Ni N
317 0.08 max 2 max 1 max 0.040 max 0.03 max 18 – 20 3 – 4 11 – 14 -
317L 0.035 max 2 max 1 max 0.040 max 0.03 max 18 – 20 3 – 4 11 – 15 -

Mechanical Properties of Stainless Steel 317/317L Buttweld Fittings

Density 8.0 g/cm3
Melting Point 1454 °C (2650 °F)
Tensile Strength Psi – 75000 , MPa – 515
Yield Strength (0.2%Offset) Psi – 30000 , MPa – 205
Elongation 35 %