Stainless Steel Fittings

Product Type    Size Range

Butt Weld Fittings   ½” –72”(DN15–DN1800)

Forged Fittings   ¼” –4”, Class 3000/6000/9000

Sanitary Fittings   1/2"–12"

Compression Fittings   OD 3mm–50mm

Fabricated Fittings  As per drawing / unlimited size

Thickness: SCH10 / SCH20 / SCH40 / SCH80 / SCH160 / XXS or customized

Standards for dimensions: ASME B36.19 / ASME B36.10, EN / DIN standards

Our stainless steel fittings are widely used in:

Oil & Gas / Petrochemical

High-pressure pipelines, refining units, offshore platforms

Chemical Processing

Corrosion-resistant piping, reactors, acid/alkali handling systems

Food, Beverage & Dairy

Sanitary tubes and hygienic fluid transfer lines

Pharmaceutical & Biotechnology

CIP/SIP piping, pure water systems, sterile process lines

Water Treatment & Desalination

RO plants, seawater pipelines, filtration systems

Construction & Infrastructure

HVAC, fire protection systems, structural piping

Marine & Shipbuilding

Corrosion-resistant fittings in harsh marine environments

Automotive & Machinery

Instrumentation, hydraulic systems, fluid control systems

1.1 Butt Weld Pipe Fittings

Key products: stainless steel elbows, tees, reducers, caps, stub ends, butt weld fittings, ASME B16.9 fittings

Standards ofStainless Steel Fittings

ASME B16.9, ASME B16.28

MSS-SP-43, DIN/EN 10253-3/4

ISO 5251

Types ofStainless Steel Fittings:

Long/Short Radius Elbows (45°, 90°, 180°)

Equal / Reducing Tees

Concentric / Eccentric Reducers

End Caps

Lap Joint Stub Ends

Materials / Grades of Stainless Steel Fittings:

304, 304L, 316, 316L, 321, 310S, 904L, Duplex 2205, Super Duplex 2507

Chemical Composition of Stainless Steel Fittings:

• High Cr (18–26%)

• Ni (8–25%)

• Mo (2–4.5% for 316/904L)

• Duplex grades with controlled Ferrite/Austenite ratio for high strength

 

Mechanical Properties of Stainless Steel Fittings:

Tensile strength: 485–620 MPa

Yield strength: 170–450 MPa (grade-dependent)

High toughness and corrosion resistance

Heat resistance up to 800°C (310S, 321)

 

Testing Requirements of Stainless Steel Fittings:

PMI (Positive Material Identification)

Hydrostatic Test (when applicable)

Intergranular Corrosion Test (IGC)

Mechanical Test (Tensile, Hardness, Impact)

Dimensional & Visual Inspection

NDT: UT / PT / RT as required

 

1.2 Forged Steel Fittings

Keywords: stainless steel forged fittings, socket weld fittings, threaded fittings, ASME B16.11 fittings

Standards of Forged Stainless Steel Fittings:

ASME B16.11

MSS SP-83, SP-79, SP-95

ISO 4144 (threaded)

Types of forged Stainless Steel Fittings:

Socket Weld / Threaded Elbows

Couplings

Half Couplings

Unions

Plugs

Bushings

Crosses

Pressure Classes of Stainless Steel Fittings:

Class 3000, 6000, 9000

Material Grades of Stainless Steel Fittings:

304/304L, 316/316L, 321, 347, 904L, Duplex, Super Duplex

 

1.3 Sanitary Stainless Steel Fittings

Keywords: sanitary fittings, hygienic fittings, food-grade stainless steel fittings, tri-clamp fittings

Standardsof Sanitary Stainless Steel Fittings:

3A, SMS, DIN 11850, ISO 1127, BS 4825

Types of Sanitary Stainless Steel Fittings:

Tri-Clamp Fittings

Ferrules

Sanitary Elbows / Tees

Reducers

Sight Glasses

Sanitary Clamps & Gaskets

Material Grades of Stainless Steel Fittings:

304, 304L, 316L (preferred for food & pharma)

Features of Stainless Steel Fittings:

Smooth inner surface (Ra < 0.8μm)

Anti-bacterial and easy to clean

Suitable for CIP/SIP processes

1.4 Compression & Instrumentation Fittings

Keywords: stainless steel tube fittings, compression fittings, instrumentation fittings, hydraulic fittings

Standards of Stainless Steel Fittings:

ISO 8434-1 / DIN 2353

ASTM A182, ASTM A479

SAE / JIS / BS standards

Types of Stainless Steel Fittings:

Ferrule Fittings

Bulkhead Unions

Tube-to-Pipe Connectors

Needle Valves

Ball Valves

Material Grades of Stainless Steel Fittings:

316 / 316L (most common), Duplex for high pressure

 

1.5 Customized & Special Pipe Fittings

Keywords: custom stainless steel fittings, fabricated fittings, large-diameter fittings

Womic accepts drawing-based production for:

Large Diameter Elbows (up to 72”)

Thick-Wall Special Reducers

High-Pressure Headers

Spools & Prefabricated Piping Assemblies

Complete Product Range

One-stop supply for butt weld, forged, sanitary, compression, and custom stainless steel fittings.

High-Quality Raw Materials

Premium stainless steel sourced from TISCO, BAOSTEEL, POSCO, OUTOKUMPU ensures reliability and stable performance.

Strict Quality Control

100% Material Identification (PMI)

NDT: UT, PT, RT

Hydro Test & Mechanical Test

Dimensional Inspection

Certification: EN 10204 3.1 / 3.2, PED, AD2000, ISO 9001

Global Standards Compliance

ASME, ASTM, MSS, DIN, EN, ISO, JIS—fully compliant production.

Strong Manufacturing Capability

CNC machining

Hot forming & cold forming

Automated welding

Heat treatment

Large warehouse stock

Fast Delivery & Export Expertise

Over 20 years of export experience to Europe, Middle East, Southeast Asia, Africa, South America.

OEM / ODM Support

Customized fittings and prefabricated pipe spools based on drawings.

Looking for a reliable supplier ofStainless Steel Fittings?

We are ready to support your project with high-quality materials and expert technical service.

Tel: 0086-18390957568

Whatsapp: 0086-15575100681

E-mail:info@womicstainless.com

Website: www.womicstainless.com