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Stainless Steel 317L Pipe Fittings are precision-engineered components designed to meet the highest industrial standards. Made from low carbon, high chromium-nickel-molybdenum alloy, these fittings provide excellent resistance to corrosion, pitting, and crevice corrosion, making them ideal for chemical, pharmaceutical, and marine applications.

Our SS 317L Pipe Fittings range includes elbows, tees, reducers, caps, and couplings, all manufactured to ensure a perfect fit and seamless operation in pipelines. These fittings are compatible with various industrial standards, providing flexibility for diverse installation requirements.

Stainless Steel 317L pipe fittings are low-carbon austenitic stainless steel materials engineered for superior corrosion resistance, particularly in acidic and chloride-rich environments. They are widely used in chemical processing, petrochemical, pharmaceutical, and food industries where high corrosion resistance and durability are essential.

SS 317L contains approximately 18–20% chromium, 11–14% nickel, and 3–4% molybdenum, with a maximum carbon content of 0.03%. The addition of molybdenum significantly enhances resistance to pitting, crevice corrosion, and general corrosion in highly aggressive chemical environments.

Stainless Steel 317L Pipe Fittingss and Tubes

Engineered for durability, Stainless Steel 317L Pipe Fittings offer superior mechanical strength and long-lasting performance even in high-temperature and high-pressure environments. They are designed to withstand extreme conditions without compromising the integrity of your piping system.

Corrosion resistance is one of the key features of SS 317L Pipe Fittings. Their enhanced chemical composition makes them resistant to oxidizing agents, acids, and saline environments, ensuring minimal maintenance and a longer lifecycle compared to standard stainless steel fittings.

317L pipe fittings exhibit tensile strength ranging from 485–620 MPa and yield strength between 170–310 MPa. Elongation typically ranges from 35–45%, providing excellent ductility and toughness, making these fittings reliable for high-pressure and chemically aggressive piping systems.

These fittings offer exceptional resistance to corrosion in acidic and chloride-containing environments, such as hydrochloric acid, sulfuric acid, and seawater. They are highly resistant to pitting, crevice corrosion, and stress corrosion cracking, making them suitable for long-term use in harsh chemical processing applications.

Specification Table

Property Details
Material Stainless Steel 317L (Low Carbon, High Alloy)
Standards ASTM A403 / A182 / ASME B16.9 / ASME B16.11
Fitting Types Elbows, Tees, Reducers, Caps, Couplings, Stub Ends
End Connections Butt Weld, Socket Weld, Threaded
Sizes 1/2" to 48" (custom sizes available)
Pressure Rating Class 150, 300, 600, 900, 1500, 2500
Temperature Range -196°C to 800°C (-321°F to 1472°F)
Applications Chemical, Petrochemical, Pharmaceutical, Food & Beverage, Marine, Power Plants

Chemical Composition (Typical ranges for SS317L)

Note: Values are typical ranges. Final composition will be confirmed on MTC provided per lot.

Element Percentage (%)
Carbon (C) ≤ 0.03
Chromium (Cr) 18.0 – 20.0
Nickel (Ni) 11.0 – 15.0
Molybdenum (Mo) 3.0 – 4.0
Manganese (Mn) ≤ 2.0
Silicon (Si) ≤ 1.0
Phosphorus (P) ≤ 0.045
Sulfur (S) ≤ 0.03
Iron (Fe) Balance

Mechanical Properties (Typical)

Property Value
Tensile Strength 515 – 827 MPa (75 – 120 ksi)
Yield Strength 205 MPa min (30 ksi)
Elongation (in 50 mm) 40% min
Hardness (Brinell) 150 max
Modulus of Elasticity 193 GPa
Impact Strength ≥ 27 J at room temperature
Operating Temperature -196°C to 800°C (-321°F to 1472°F)

Equivalent Grades

Standard Equivalent Grade
AISI / ASTM 317L
EN / DIN 1.4438
BS 317S31
JIS SUS317L
GB / Chinese Standard 0Cr17Ni13Mo2

Dimension & Weight Chart (Selected common sizes)

Below is a representative chart showing outside diameter, wall thickness, inside diameter, cross-sectional area of metal and calculated weight per metre (kg/m). Values are calculated using density = 7.93 g/cm³ and are for guidance — use actual MTC values for procurement & engineering.

Nominal Size (inch) Outside Diameter (mm) Wall Thickness (mm) Weight per Piece (kg)
1/2" 21.3 2.77 0.2
3/4" 26.7 2.87 0.3
1" 33.4 3.38 0.5
2" 60.3 3.91 1.2
3" 88.9 4.55 2.5
4" 114.3 4.85 3.8
6" 168.3 5.49 7.5
8" 219.1 6.02 12.0
10" 273.0 6.55 18.5
12" 323.9 7.11 25.0

Types Of Stainless Steel 317L Pipe Fittingss and Tubes

Seamless Pipe

SS 310 Seamless Pipe

Welded Pipe

SS 310 Welded Pipe

ERW Pipe

SS 310 ERW Pipe

EFW Pipe

SS 310S EFW Pipe

Seamless Tube

Stainless Steel 310S Seamless Tube

Welded Tube

310H Stainless Steel Welded Tube

Capillary Tube

310 Stainless Steel Capillary Tube

Heat Exchanger Tubes

310H Stainless Steel Heat Exchanger Tubes

Frequently Asked Questions (FAQ)

Q1: What is Stainless Steel 317L Pipe Fittings used for?

A1: SS 317L Pipe Fittings are used in industries requiring high corrosion resistance, such as chemical processing, petrochemical plants, pharmaceuticals, food processing, marine, and power generation.

Q2: What are the types of Stainless Steel 317L Pipe Fittings available?

A2: Common types include elbows, tees, reducers, caps, couplings, and stub ends. These are available with butt weld, socket weld, or threaded connections.

Q3: What makes 317L different from other stainless steels?

A3: 317L is a low-carbon austenitic stainless steel with higher molybdenum content than 316L, offering superior resistance to pitting and crevice corrosion, especially in chloride-rich environments.

Pipes Fittingss Supplier

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