Steel Products Primary Standard: ASTM A182 / A403 Ready Yard Inventory

Industrial Fittings

Trusted Industrial Fittings for Pipelines & Machinery

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Industrial Fittings
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Governing Industry Standards

ASTM A182 / A403 ASME SA182 / SA403 ANSI/ASME B16.9 (Factory-Made Wrought Butt-Welding Fittings) ANSI/ASME B16.28 (Wrought Steel Butt-Welding Short Radius Elbows) MSS-SP-43 (Wrought Stainless Steel Butt-Welding Fittings) ASME B16.11 (Forged Fittings, Socket-Welding and Threaded)

Dimensional & Size Scope

1/2″ NB to 48″ NB | Schedules: Sch 10s, 40s, 80s, 160s, XXS | Forged: 2000#, 3000#, 6000#, 9000#

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Technical Description & Overview

These components are designed to facilitate the smooth flow of liquids, gases, and other materials, playing a vital role in industries such as oil & gas, chemical processing, water treatment, and construction. The quality and precision of fittings directly impact the safety, durability, and efficiency of industrial systems. Common materials include stainless steel, carbon steel, brass, and specialized alloys, each chosen for specific applications based on their strength and resistance to environmental factors. The durability of these fittings ensures long-term reliability and minimizes maintenance costs.\n\nEach type serves a specific function, such as regulating flow, connecting different pipe sections, or preventing leaks. Proper selection of fittings based on application requirements is essential for optimizing system performance and ensuring safety in industrial operations. These fittings are engineered to handle high-pressure conditions and prevent leaks that could lead to hazardous situations. Similarly, in the chemical and petrochemical industries, corrosion-resistant fittings are essential for transporting and processing volatile substances safely. The food and beverage industry requires hygienic fittings made from stainless steel to maintain cleanliness and prevent contamination during food processing and packaging.

Engineering Specifications

Technical Parameter Standard Value / Specification
Governing Specifications ASTM A182 / A403 & ASME SA182 / SA403
Fitting Types Seamless / Welded / Fabricated Elbows (45°, 90°, 180°), Equal Tees, Reducing Tees, Concentric Reducers, Eccentric Reducers, End Caps, Stub Ends
Bending Radii R = 1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom Induction Pipe Bends
Size Scope ½”NB to 48″NB in Schedule Sch 10s, 40s, 80s, 160s, XXS
Dimensional Standards ANSI/ASME B16.9, B16.28, MSS-SP-43
End Bevels Beveled Ends per ASME B16.25 (Plain End / Beveled End)
Testing & Certification Hydrostatic Test, Radiographic Testing (RT), Dye Penetrant Test (DPT), EN 10204 3.1 MTC

Certified Chemical Spectrometry Limits

Chemical Element Maximum / Standard Limit
Carbon (C) 0.08% max (WP304) / 0.030% max (WP304L/WP316L)
Chromium (Cr) 18.0 - 20.0% (WP304) / 16.0 - 18.0% (WP316)
Nickel (Ni) 8.0 - 11.0% (WP304) / 10.0 - 14.0% (WP316)
Molybdenum (Mo) 2.0 - 3.0% (WP316/WP316L)

Mechanical & Tensile Parameters

Mechanical Property Guaranteed Requirement
Tensile Strength (UTS) ≥ 515 MPa (WP304) / ≥ 485 MPa (WP316L)
Yield Strength (0.2% Offset) ≥ 205 MPa (WP304) / ≥ 170 MPa (WP316L)
Elongation (% in 2") ≥ 28% (Longitudinal) / ≥ 20% (Transverse)
Hardness (Brinell HBW) ≤ 187 HBW

Available Material Grades

ASTM A403 WP 304 / 304L

Standard stainless butt-weld fittings for chemical processing, water lines, and food utilities.

ASTM A403 WP 316 / 316L / 316Ti

Molybdenum-bearing butt-weld fittings offering superior resistance to pitting in coastal and chemical networks.

ASTM A403 WP 310S / 321 / 347

High-temperature fittings engineered for steam headers, thermal cracking, and furnace ducts.

ASTM A403 WP 904L

Super-austenitic fittings for severe sulfuric acid and phosphoric acid processing lines.

Key Engineering Features & Advantages

Premium Quality Materials: Manufactured from certified seamless pipe and forged billets
Corrosion & Heat Resistance: Engineered to withstand aggressive chemicals, sour gas, and high temperatures
Precision Engineering: Accurate wall thickness, bevel angle (37.5° ± 2.5°), and root face per ASME B16.25
High Load-Bearing Capacity: Full pressure rating equivalent to seamless straight pipe of same schedule
Wide Range of Applications: Covers Butt Weld, Socket Weld, Threaded, and Custom Induction Bends

Target Industrial & Infrastructure Applications

Oil & Gas Industry (refinery process loops, crude pipelines, compressor stations)
Chemical & Petrochemical Processing (acid lines, caustic transfer, polymer reactor piping)
Water Supply & Treatment (desalination headers, municipal filtration, high-pressure RO skids)
Power Plants & Energy Sector (steam distribution, boiler feed lines, cooling water loops)
Construction & Infrastructure (HVAC chilled water loops, fire sprinkler headers)
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