ASME B16.9 Butt Weld Pipe Fittings

ASME B16.9 Butt Weld Pipe Fittings – Factory Direct

Manufacturing Standard: Fully compliant with ASME B16.9, ASTM A234/A403, and MSS SP-75 standards.
Specs: 1/2″ to 48″ | SCH10 to SCH160
Material: Carbon Steel, Alloy Steel, Stainless Steel
Quality Assurance: Material traceability with EN 10204 3.1/3.2 certificates. Third-party inspection accepted.
Project Ready: Specialized in supplying large-scale Oil & Gas, Marine, and Power plant projects worldwide.
Fast Response: Technical support and quotation provided within 2 hours.

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As a leading manufacturer and supplier in the industrial piping sector, JS FITTINGS specializes in high-performance ASME B16.9 Butt Weld Pipe Fittings. Engineered for heavy-duty applications in high-pressure and high-temperature environments, our fittings are designed to provide leak-proof, permanent connections in critical piping systems. Whether for oil & gas infrastructure, offshore marine projects, or large-scale industrial processing plants, our products meet the most stringent international standards.

ASME B16.9 defines factory-made wrought butt-welding pipe fittings in sizes from NPS 1/2 to NPS 48 (DN15–DN1200). It specifies overall dimensions, tolerances, ratings, testing, and markings for elbows, tees, reducers, and caps used in industrial piping.

Technical Specifications (ASME B16.9 Standard)

Our butt-weld fittings are manufactured according to the latest ASME/ANSI B16.9 standards, ensuring dimensional accuracy and structural integrity for seamless welding.

Feature	Specification Details
Standard	ASME/ANSI B16.9, MSS SP-75, DIN, JIS, EN
Size Range	1/2″ NB to 48″ NB (Seamless & Welded Pipe fittings)
Wall Thickness	SCH 10, SCH 40, SCH 80, SCH 160, XS, XXS
Material Grades	Carbon Steel: ASTM A234 WPB, WPL6… Alloy Steel: ASTM A234 WP5, WP9, WP11… Stainless Steel: ASTM A403 WP304/L, WP316/L…
Types	Elbow, Tee, Reducer, End Cap, Stub End

DN to NPS Conversion

DN	NPS
100	4
50	2
15	1/2

* For NPS > 4, the equivalent is DN = 25 X NPS.

Steel elbows

Steel Cap

Carbon steel Buttweld Eccentric Reducers

Steel reducers

Steel Tee

Industrial Applications

Oil & Gas Exploration: Onshore and offshore pipelines, refineries, and petrochemical plants.
Power Generation: Thermal power plants, nuclear facilities, and renewable energy piping systems.
Marine & Shipbuilding: Seawater cooling systems, offshore platforms, and high-pressure fluid transportation.
Industrial Infrastructure: Water treatment plants, chemical processing, and fire-fighting systems.

Quality Commitment & Certifications

Material Test Certificates (MTC) EN 10204 3.1 / 3.2 available upon request.
Third-Party Inspection: We welcome inspections from BV, SGS, TUV, or any third-party agency appointed by your project team.

asme b16.9 buttweld steel pipe fittings Quality control