High Quality SS Buttweld Pipe Fittings
Grade 304/309/310/316/317/321/347/904L • Strength • Sealing • Durability
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SS 304 Buttweld Fittings
- 18% chromium – 8% nickel austenitic stainless steel
- Excellent corrosion resistance in normal environments
- Good formability for standard fitting shapes
- Weldable using standard methods
- Non-magnetic in annealed condition
- Used in chemical, food, and pharmaceutical industries
- Commonly used for pipelines, elbows, tees, and reducers
- Minimum tensile strength: ~515 MPa
- Widely available and cost-effective for general use
SS 304L Buttweld Fittings
- Low carbon version of SS 304
- Prevents carbide precipitation after welding
- Excellent resistance to intergranular corrosion
- Ideal for heavy welding applications
- Used in chemical pipelines and pressure vessels
- Good strength at normal operating temperatures
- Minimum tensile strength: ~485–515 MPa
- Preferred for welded piping systems
- Ensures long-term durability in corrosive services
SS 316 Buttweld Fittings
- Added molybdenum for enhanced corrosion resistance
- Superior resistance to chlorides and acidic media
- Good weldability and formability
- Used in marine, chemical, and pharmaceutical piping
- Suitable for high-temperature applications
- Minimum tensile strength: ~515 MPa
- Used in elbows, tees, reducers, and caps
- Preferred where higher corrosion resistance is needed
- Non-magnetic in annealed condition
SS 309 Buttweld Fittings
- High chromium and nickel austenitic stainless steel
- Excellent oxidation resistance at elevated temperatures
- Good strength for continuous high-temperature pipelines
- Moderate resistance to carburisation
- Weldable using suitable electrodes
- Minimum tensile strength: ~520 MPa
- Used in furnace piping, elbows, tees, and reducers
- Suitable for heat treatment and high-temp process pipelines
- Reliable for cyclic thermal service in industrial piping
SS 310 Buttweld Fittings
- Very high chromium-nickel austenitic stainless steel
- Outstanding oxidation resistance up to 1100°C
- Excellent resistance to scaling and thermal fatigue
- High strength at extreme temperatures
- Good resistance to sulfidation
- Minimum tensile strength: ~550 MPa
- Used in high-temp process piping and fittings
- Suitable for kilns, furnaces, and radiant tube pipelines
- Designed for continuous high-temperature service
SS 310S Buttweld Fittings
- Low-carbon version of SS 310
- Superior weldability without risk of sensitisation
- Excellent oxidation resistance at high temperatures
- Better resistance to thermal shock than 310
- Good mechanical stability in high-temp pipelines
- Minimum tensile strength: ~520–550 MPa
- Used in furnace piping, heat exchangers, and elbows/tees
- Ideal for high-temperature weld fabrications
- Performs well in oxidising atmospheres for piping systems
SS 316 Buttweld Fittings
- Molybdenum-bearing austenitic stainless steel
- Excellent resistance to pitting & crevice corrosion
- Superior performance in marine and chemical pipelines
- Good strength at elevated temperatures
- Very good weldability and formability for elbows, tees, and reducers
- Minimum tensile strength: ~515 MPa
- Used in chemical, marine, and pharmaceutical piping systems
- Suitable for high-purity and hygienic pipelines
- Highly resistant to chlorides and corrosive media
SS 316L Buttweld Fittings
- Low carbon version of SS 316
- Prevents intergranular corrosion after welding
- Excellent corrosion resistance in welded piping zones
- Good strength at moderate temperatures
- Ideal for heavy welded pipeline fabrications
- Minimum tensile strength: ~485–515 MPa
- Used in pressure vessels, chemical pipelines & food plant piping
- Preferred for pharmaceutical and hygienic applications
- Ensures long-term durability in corrosive environments
SS 316Ti Buttweld Fittings
- Titanium-stabilized version of SS 316
- Prevents carbide precipitation at high temperatures
- Excellent resistance to intergranular corrosion in welded fittings
- Good creep and tensile strength at elevated temperatures
- Good oxidation resistance for heat-exposed pipelines
- Minimum tensile strength: ~515 MPa
- Used in high-temp piping, heat exchangers & reactors
- Suitable for corrosive high-temperature service pipelines
- Reliable for long-term thermal exposure in process piping
SS 317 Buttweld Fittings
- High molybdenum austenitic stainless steel
- Superior corrosion resistance compared to SS 316
- Excellent resistance to acidic and aggressive media
- High resistance to pitting and crevice corrosion
- Good formability and weldability for elbows, tees, and reducers
- Minimum tensile strength: ~515–620 MPa
- Used in chemical and process piping systems
- Ideal for acid handling plants and reactors
- Performs reliably in corrosive and aggressive media
SS 317L Buttweld Fittings
- Low carbon version of SS 317
- Improved corrosion resistance in welded piping zones
- Minimizes carbide precipitation after welding
- Excellent performance in sulphuric acid and chemical pipelines
- Superior weldability for fittings and fabrications
- Minimum tensile strength: ~485–515 MPa
- Used in chemical reactors, fertilizer, and petrochemical piping
- Suitable for high-corrosion environments
- Ensures long-term service life in aggressive media
SS 321 Buttweld Fittings
- Titanium-stabilized stainless steel
- Excellent resistance to intergranular corrosion in welded piping
- Maintains performance after welding
- Prevents carbide precipitation in heat-exposed pipelines
- Good oxidation resistance for hot piping systems
- Minimum tensile strength: ~515 MPa
- Used in exhaust piping, manifolds, elbows, and tees
- Ideal for moderate high-temperature piping applications
- Maintains ductility after thermal exposure in pipelines
SS 321H Buttweld Fittings
- High carbon version of SS 321
- Improved creep and rupture strength for high-temp pipelines
- Excellent resistance to high-temperature oxidation
- Superior strength at elevated service temperatures
- Stable in continuous hot piping applications
- Minimum tensile strength: ~520–585 MPa
- Used in boilers, superheaters, and high-temp piping systems
- Ideal for power plant equipment and heat-exposed pipelines
- Designed for long-term high-temperature service
SS 347 Buttweld Fittings
- Niobium-stabilized austenitic stainless steel
- Excellent resistance to intergranular corrosion in welded piping
- Stable in high-temperature welded pipelines
- Good oxidation resistance for hot piping systems
- High mechanical strength for industrial fittings
- Minimum tensile strength: ~515 MPa
- Used in refinery, petrochemical, and process piping
- Suitable for high-pressure pipelines and vessels
- Performs reliably under thermal cycling conditions
SS 347H Buttweld Fittings
- High carbon niobium-stabilized stainless steel
- Enhanced creep and rupture strength for high-temperature piping
- Excellent resistance to oxidation and scaling in fittings
- Better rupture strength than SS 347
- Stable in continuous high-temperature pipeline service
- Minimum tensile strength: ~520–600 MPa
- Used in superheaters, boilers, and high-temp piping
- Ideal for power generation and thermal process pipelines
- Designed for extreme thermal exposure in piping systems
SS 904L Buttweld Fittings
- Super austenitic high-alloy stainless steel
- Very high nickel and molybdenum content
- Exceptional resistance to sulphuric and phosphoric acid pipelines
- Outstanding resistance to chloride stress corrosion in fittings
- Excellent weldability despite heavy alloying
- Minimum tensile strength: ~490–650 MPa
- Used in chemical processing, acid handling, and piping systems
- Ideal for offshore, marine, and aggressive corrosion environments
- Designed for extremely aggressive corrosive service in pipelines
Our Buttweld Pipe Fittings are manufactured using advanced processes and undergo extensive quality checks to ensure flawless weldability, durability, and long service life. Each fitting is thoroughly inspected using key NDT techniques such as radiographic testing (RT), ultrasonic testing (UT), hydrostatic testing, and visual/dimensional examination. We also perform detailed chemical composition analysis and mechanical property testing to ensure material compliance with strict industry standards.
Throughout the forming and welding stages, every buttweld fitting is monitored closely to eliminate defects such as misalignment, surface irregularities, and wall-thickness variations. This ensures perfect joint integrity and high-performance reliability in pipelines carrying high temperatures, pressures, and corrosive media. All our buttweld fittings fully comply with ASME, ASTM, MSS-SP, and related global specifications, making them a preferred choice for critical piping systems worldwide.
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Looking for high-quality Stainless Steel Grade 304/304L/304H • 309/310/310S • 316/316L/316Ti • 317/317L • 321/321H • 347/347H • 904L Buttweld Pipe Fittings? Get in touch with us today.
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