Stainless Steel Pipe Fittings

Stainless steel pipe fittings are the indispensable components for a piping system, they are widely used for chemical, water treatment, oil refinery, ship building, paper making industries etc. Kaysuns is a manufacturer for stainless steel and duplex steel pipe fittings, including stainless steel butt-weld fittings and forged fittings. We provide stainless steel elbow, tee, concentric reducer, eccentric reducer, caps, return bend, stub end, cross, and also custom fabrication as per designs that will fit the unique project.

Stainless Steel Buttweld Fittings

stainless steel buttweld elbows — Stainless steel buttweld elbows

Stainless steel butt-weld fittings is our key product. Our factory is an ISO 9001 approved manufacturer in Zhejiang China. We provide full range of such elbows, tees, reducers, stub ends, caps, bends in materials stainless steel, duplex steel and super duplex steel, nickle-based alloy, titanium alloy, copper alloy etc to standard ASME B16.9, MSS-SP43, EN 10253-4/-3, ISO 05251, JIS, GOST and customized fabricated available.

Stainless Steel Forged Fittings

stainless steel forged tees — Stainless steel forged tees

Stainless steel forged fittings are mainly the size under 6” as its connected end is socket-weld and threaded. We supply both socket-weld fittings and threaded fittings (NPT and BSPT) to ASME B16.11, BS 3799 etc.

For small order of stainless steel forged pipe fittings, we are ability to supply it from the stock with immediate shipment, including stainless steel F304, 316L and duplex 2205 etc.

Our stainless steel pipe fittings are widely used in Chemicals, Fats, Fertilizers, Sugar Mills, Distilleries, Cement Industries, Ship Buildings, Paper Industries, Pumps, Petrochemicals, Oil and Natural Gas Organization, Refining, Petrochemical and Offshore Industries etc. All of our products are available for third party inspection, such as SGS, BV, Lloyd's, TUV etc.

Stainless Steel Pipe Fittings -Butt-weld Fittings Dimension – ANSI/ASME B16.9

Product	Size*	Wall Thickness**	Seamless	Welded
Elbow	1/2"-24"	SCH10S~XXS	√	√
Elbow	8"-104"	SCH5S~80S/XS		√
Tee	1/2"-24"	SCH10S~XXS	√	√
Tee	8"-104"	SCH5S~80S/XS		√
Reducer	1/2"-24"	SCH10S~XXS	√	√
Reducer	8"-104"	SCH5S~80S/XS		√
Cap	1/2"-80"	SCH10S~SCH160	√
Lap Joint Stub End	1/2"-24"	SCH5S~80S/XS	√	√
Lap Joint Stub End	8"-80"	SCH5S~80S/XS		√

Notes:
*Dimension range is not available for duplex and some special grade (For example, super duplex S32750 ≤16”). Please make a specific enquiry.
** Wall thickness range is not available for duplex and some special grade, please make a specific enquiry.

What Material We Do

Material	Grade
Stainless Steel	AISI 304, 304L, 316, 316L, 316Ti, 317L, 321, 321H, 347, 347H, 904L, 254 SMO (W1.4301, 1.4306, 1.4948, 1.4401, 1.4404, 1.4571, 1.4438, 1.4541, 1.4878, 1.4550, 1.4845, 1.4539, 1.4547 etc.).
DSS & SDSS	Duplex 2205 - S31803, S32205, super duplex 2507 – S32750, S32760 (w1.4462, 1.4410, 1.4501, 1.4507 etc.)
Nickel Alloy	Monel 400, Inconel 600,625, Incoloy 800,800H, 825, Alloy 20, Hastelloy B3, C22,C276, 254SMO, Cu/Ni 70/30, 90/10 etc.
Copper-Nickel Alloy	C71500, C70600 (CuNi 90/10, CuNi 70/30 )
Titanium Alloy	Ti Gr. 1, Gr. 2, Gr. 3, Gr.5, Gr. 6, Gr. 9, Gr.11, Gr. 12, A-1, A-3 etc.

Available Standard for Stainless Steel Pipe Fittings

The Common Manufacturing Standard for Stainless Steel Pipe Fittings

Norm	Specification
	Stainless Steel Butt-weld Fittings
ASME B16.9	Factory-Made Wrought Buttwelding Fittings
MSS-SP-75	High-Strength, Wrought, Butt-Welding Fittings
MSS-SP-43	Wrought and Fabricated Butt-Welding Fittings for Low Pressure, Corrosion Resistant Applications
EN 10253-4	Wrought austenitic and austenitic-ferritic (duplex) stainless steels with specific inspection requirements
EN 10253-3	Wrought austenitic and austenitic-ferritic (duplex) stainless steels without specific inspection
ISO 05251	Butt-welding pipe fittings. Wrought austenitic and austenitic-ferritic (duplex) stainless steels without specific inspection requirements
GOST 17375	Carbon and low-alloy steel butt-welding fittings Elbow Design
GOST 17376	Carbon and low-alloy steel butt-welding fittings Tees Design
GOST 17378	Carbon and low-alloy steel butt-welding fittings Reducers Design
GOST 17379	Carbon and low-alloy steel butt-welding fittings. Elliptical caps. Design
GOST 17380	Carbon and low-alloy steel butt-welding fittings. Specifications
GB12459	Steel Wrought Buttwelding Fittings
JIS B2311	Steel Butt-Welding Pipe Fittings for Ordinary Use
JIS B2312	Steel Plate Butt-Welding Pipe Fittings
JIS B2313	Steel Plate Butt-Welding Pipe Fittings
	Stainless Steel Forged Fittings
ASME B16.11	Forged Fittings, Socket-Welding and Threaded
MSS SP-79	Socket-Welding Reducer Inserts
MSS SP-83	Class 3000 and 6000 Pipe Unions, Socket Welding and Threaded (Carbon Steel, Alloy Steel, Stainless Steels, and Nickel Alloys).
MSS SP-97	Integrally Reinforced Forged BranchOutlet Fittings - SocketWelding, Threaded, and Buttwelding Ends
BS 3799	Specification for Steel Pipe Fittings, Screwed and Socket-Welding for the petroleum industry
JIS B2302	Carbon Steel & Stainless Steel Socket Product of Standards
JIS B2316	Steel socket-welding pipe fittings