SS Pipe Fittings A403 304

Stainless Steel Fittings

SS Pipe Fittings A403 304

SS Pipe Fittings A403 304 Supplier, ASTM A403 WP304 / WP304L Stainless Steel Fittings, Reliable Pipes & Tubes.

Reliable Pipes & Tubes – Leading SS Pipe Fittings A403 304 Supplier

Reliable Pipes & Tubes is a leading supplier, stockholder, and exporter of high-grade SS Pipe Fittings A403 304. SS Pipe Fittings A403 304 refers to the material of forged and rolled austenitic stainless fittings for pressure pipes. The standard includes several grades of austenitic stainless steel alloys, and uses the WP or CR prefix to mark the grade of steel, depending on the applicable ASTM or MSS size and rated pressure standards.

The SS Pipe Fittings A403 304 are designed for forged steel pipe fittings and can be used in many fields such as engineering industry, energy conversion plants, and other critical applications. Material under this standard is named as WP Grade, and for each WP grade, several categories of pipe fittings are included to indicate that a seamless or welded structure is used. Class designations are also used to indicate non-destructive testing methods and the extent of non-destructive testing (NDE).

We offer a comprehensive range of SS Pipe Fittings A403 304 from 1/2" NB to 48" NB in various schedules to meet custom applications. Every SS Pipe Fittings A403 304 supplied by Reliable Pipes & Tubes undergoes rigorous testing including tensile testing, chemical analysis, and visual inspection to ensure optimal quality and structural integrity.

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What is SS Pipe Fittings A403 304?

SS Pipe Fittings A403 304 refers to ASTM A403 standard covering wrought austenitic stainless steel piping fittings for pressure service. The SS Pipe Fittings A403 304 are designed specifically for forged steel pipe fittings; cast pipe fittings are not suitable under this standard. The forming or forging operation for SS Pipe Fittings A403 304 may be performed by hammer forging, press forging, perforating, extrusion, upsetting, rolling, bending, welding or machining, or two or more methods at the same time. All SS Pipe Fittings A403 304 should be supplied in heat treated condition and all welding work should be done before heat treatment.


SS Pipe Fittings A403 304 Quick Details

Parameter Details
Company NameReliable Pipes & Tubes
Country/RegionIndia
FOB PriceUS $1500 - $5000 / Metric Ton
PortNhava Sheva Port, Mumbai
Main ProductsPipe Fittings, Elbows, Tees, Reducers, Caps, Flanges
CertificationISO 9001, ISO 14001 & OHSAS 18001

SS Pipe Fittings A403 304 Specifications

Specification Heading Details
SpecificationASTM A403 / ASME SA403
GradesWP304, WP304L, WP310S, WP316, WP316L
TypesSeamless or Welded
Dimension Range1/2" NB to 48" NB
Wall Thickness RangeSchedule 10S, Schedule 40S, Schedule 80S
Dimension StandardsASME B16.9, ASME B16.11, MSS SP-43, MSS SP-79, MSS SP-95, MSS SP-97
Fitting TypesElbow, Tee, Cap, Reducer, Coupling, Nipple, Bend, Olets
Surface FinishPickled, Annealed & Pickled, Bright Annealed, Passivated
EndsPlain Ends, Beveled Ends, Threaded Ends
PackagingWooden Pallet / Wooden Box / Plastic Cloth Wraps / Plastic End Caps
Material Test CertificateEN10204 3.1, 3.2 / Laboratory Test Certificate from NABL Approved Lab. / Under Third Party Inspection Agency like SGS, TUV, DNV, LLOYDS, ABS etc.
Equivalent StandardsGOST, AWWA, BS, SS, KS, AISI, JIS, GB, IS, ISO, SAE, DIN, NFA, API, ASTM, CSA, ANSI, EN, UNI

ASTM A403 Standard Scope for SS Pipe Fittings A403 304

The ASTM A403 standard for SS Pipe Fittings A403 304 includes several grades of austenitic stainless steel alloys, and uses the WP or CR prefix to mark the grade of steel, depending on the applicable ASTM or MSS size and rated pressure standards. This standard is designed for forged steel pipe fittings. Steel for SS Pipe Fittings A403 304 should be smelted using one of the following methods:

  • Electric furnace (with separate refining optional)
  • Vacuum furnace
  • One of the former followed by vacuum remelting or electroslag consumable electrode remelting
  • If secondary melting is used, the furnace number refers to all steel ingots remelted with one smelting furnace number

Referred Standards of SS Pipe Fittings A403 304

Standard Description
ASTM A351/A351MCasting, Austenitic, for Pressure-Containing Parts Specifications
ASTM A743/A743MSpecifications of Casting, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant for General Application
ASTM A744/A744MFor Server Service other than A743M
ASTM A751Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products
ASTM A960/A960MSpecifications for Common Requirements of Wrought Steel Pipe Fittings
ASTM E112Test Methods for Determining Average Grain Size
ASTM E165Practice for Liquid Penetrant Examination for General Industry
ASME B16.9Factory-Made Wrought Steel Butt Weld Fittings
ASME B16.11Forged Steel Fittings, Socket Weld and Threaded
MSS SP-25Standard Marking System for Valves, Fittings, Flanges, and Unions
MSS SP-43Standard Practice for Light Weight Stainless Steel Butt Weld Fittings
MSS SP-79Socket Weld Reducer Inserts
MSS SP-95Swaged Nipples and Bull Plugs
MSS SP-97Integrally Reinforced Forged Branch Outlet Fittings of Socket Weld, Threaded
AWS A5.4, A5.9, A5.11, A5.14Welding Consumables Standards

Fitting Types for SS Pipe Fittings A403 304

Fitting Type Description
ElbowSS Pipe Fittings A403 304 – 45°, 90°, 180° elbows for directional change in piping systems
TeeSS Pipe Fittings A403 304 – Equal and reducing tees for branch connections
CapSS Pipe Fittings A403 304 – End caps to close pipe ends
ReducerSS Pipe Fittings A403 304 – Concentric and eccentric reducers for pipe size transitions
CouplingSS Pipe Fittings A403 304 – Couplings for joining pipes of same diameter
NippleSS Pipe Fittings A403 304 – Short pipe lengths for connecting fittings
BendSS Pipe Fittings A403 304 – Long radius and short radius bends
OletsSS Pipe Fittings A403 304 – Weldolets, sockolets, threadolets for branch connections

Chemical Composition of SS Pipe Fittings A403 304

Grade C Mn Si P S Cr Ni N
WP304 Min - - - - - 18.0 8.0 -
WP304 Max 0.08 2.0 0.75 0.045 0.03 20.0 10.5 0.10
WP304L Min - - - - - 18.0 8.0 -
WP304L Max 0.035 2.0 0.75 0.045 0.03 20.0 12.0 0.10

Mechanical Properties of SS Pipe Fittings A403 304

Grade Tensile Str (MPa) min Yield Str 0.2% Proof (MPa) min Elong Longitudinal (%) min Elong Transverse (%) min Hardness Brinell (HB) max
WP304 515 205 35 25 201
WP304L 485 170 35 25 201

Equivalent Grades For SS Pipe Fittings A403 304

STANDARD WERKSTOFF NR. UNS JIS BS AFNOR EN
WP304 1.4301 S30400 SUS 304 304S31 Z7CN18-09 X5CrNi18-10
WP304L 1.4306 / 1.4307 S30403 SUS 304L 304S11 Z3CN18-10 X2CrNi18-9 / X2CrNi19-11

* Note: These comparisons are approximate only. If exact equivalents are needed original specifications must be consulted.


Surface Finish Requirements for SS Pipe Fittings A403 304

SS Pipe Fittings A403 304 supplied in accordance with this standard shall be visually inspected. The depth of a typical surface discontinuity should be measured per the following criteria:

  • Surface crack (fish scales) deeper than 1/64 inch (0.4 mm) should be removed from SS Pipe Fittings A403 304
  • Mechanical flaws deeper than 1/16 inch (1.6 mm) should be removed from SS Pipe Fittings A403 304
  • SS Pipe Fittings A403 304 shall not have a surface discontinuity deeper than 5% of the specified nominal wall thickness
  • SS Pipe Fittings A403 304 shall have a good machined surface and shall be free of scale and passivated

Repair by Welding Allowance for SS Pipe Fittings A403 304

  • When the defect depth exceeds 33 1/3% of the nominal wall thickness in SS Pipe Fittings A403 304, or the defect area exceeds 10% of the surface area, weld repair is not allowed
  • Unacceptable defects should be removed by mechanical means or by thermal cutting or gouging methods
  • SS Pipe Fittings A403 304 shall be free of scale and shall be passivated

SS Pipe Fittings A403 304 Stock List

  • SS Pipe Fittings A403 304 – Elbow 45°
  • SS Pipe Fittings A403 304 – Elbow 90°
  • SS Pipe Fittings A403 304 – Elbow 180°
  • SS Pipe Fittings A403 304 – Equal Tee
  • SS Pipe Fittings A403 304 – Reducing Tee
  • SS Pipe Fittings A403 304 – Concentric Reducer
  • SS Pipe Fittings A403 304 – Eccentric Reducer
  • SS Pipe Fittings A403 304 – End Cap
  • SS Pipe Fittings A403 304 – Coupling
  • SS Pipe Fittings A403 304 – Nipple
  • SS Pipe Fittings A403 304 – Bend
  • SS Pipe Fittings A403 304 – Weldolet / Sockolet / Threadolet

Testing Requirements for SS Pipe Fittings A403 304

Test Type Details
Tensile TestLongitudinal or transverse cut specimens; properties shall comply with tensile requirements per A370 methods
Chemical AnalysisEach cast or furnace steel chemical composition shall be determined and comply with requirements for each grade
Visual InspectionAll SS Pipe Fittings A403 304 shall be visually inspected for surface discontinuities
Liquid Penetrant TestAs per ASTM E165 Practice for Liquid Penetrant Examination for General Industry
Grain Size TestAs per ASTM E112 Test Methods for Determining Average Grain Size
PMI TestingPositive Material Identification for SS Pipe Fittings A403 304
Hydrostatic TestAs required per applicable standards
Hardness TestRockwell and Brinell hardness testing as required

SS Pipe Fittings A403 304 Price List

Product Description Price (FOB)
SS Pipe Fittings A403 304 – ElbowUS $2.00 - 15.00 / Piece
SS Pipe Fittings A403 304 – TeeUS $3.00 - 20.00 / Piece
SS Pipe Fittings A403 304 – ReducerUS $2.50 - 18.00 / Piece
SS Pipe Fittings A403 304 – CapUS $1.50 - 10.00 / Piece
SS Pipe Fittings A403 304 – CouplingUS $1.00 - 8.00 / Piece
SS Pipe Fittings A403 304 – BendUS $5.00 - 50.00 / Piece
SS Pipe Fittings A403 304 – Per TonUS $2000 - 4500 / Ton
SS Pipe Fittings A403 304 – WP304L GradeUS $2500 - 5000 / Ton

For Our Customers:

  • We will work with you to make sure you get what you need, when you need it.
  • We will provide you with the best customer service possible.
  • We will use the highest quality materials for SS Pipe Fittings A403 304.
  • We will deliver quality, cost-effective SS Pipe Fittings A403 304 that meet your specifications.

Packaging and Sea Transportation Protection

At Reliable Pipes & Tubes, packaging is processed with standard anti-rust measures and sea transportation security rules. We ensure that your SS Pipe Fittings A403 304 reach safely and in perfect condition via the following packaging modes:

  • Bundle packing with steel strips
  • Crate packing (wooden cases)
  • Naked packing
  • End protection with plastic caps or wooden protectors