SS 304H Pipe Fittings, stainless steel 304 pipe fittings, SS 304H Seamless Pipe Fitting, SS 304 Pipe Fittings Manufacturers, SS 304 fittings

Nextgen Steel & Alloys manufactures SS 304, 304L, and 304H pipe fittings to ASME B16.9, B16.11, and MSS SP-43 standards, covering elbows, tees, reducers, end caps, couplings, and stub ends from ½" to 48" in schedules SCH 5S through SCH 160.

Stainless steel 304 pipe fittings operate in temperatures ranging from -196°C for cryogenic service to 870°C for intermittent high-temperature exposure, making them suitable for chemical processing, food manufacturing, and structural piping applications. The 304L variant limits carbon to 0.03% maximum, eliminating the need for post-weld annealing in welded assemblies and reducing intergranular corrosion risk in the heat-affected zone. Where sustained elevated temperatures above 500°C are the primary concern, 304H's higher carbon content 0.04–0.10% delivers improved creep strength for furnace components, superheater headers, and high-temperature process lines.

Table Of Content

SS 304L Pipe Fittings Manufacturers, SS 304H Pipe Fittings Suppliers, SS 304H Pipe Fittings Manufacturers, SS 304 Concentric Reducers, Stainless Steel S30409 Stub End, ASTM A403 SS 1.4307 Buttweld Pipe Elbow, ANSI B16.9 Stainless Steel 304L Eccentric Reducer, SS 304H LR Elbow Supplier, Stainless Steel Butt weld Fittings Exporter, ASME SA403 SS 304L Pipe Bend Leading Manufacturer in Mumbai, India.

Every batch of stainless steel 304L pipe fittings clears a full inspection sequence before dispatch: hardness testing, positive material identification by XRF, pitting resistance evaluation, micro and macro examination, flaring and flattening tests, and complete mechanical and chemical analysis. Third-party inspection from accredited agencies covers all production stages, with reports included in the shipping documentation.

Finished SS 304 fittings ship in wooden crates or pallets for large orders and shrink-wrapped carton boxes for smaller consignments. Both methods protect threads, bevelled ends, and surface finish through sea and air freight.

Standard Specification For SS 304/304L/304H Pipe Fitting

Specifications : ASTM A403 / ASME SA403

Dimensions : ASME/ANSI B16.9, ASME B16.28, MSS-SP-43

Size : 1/8” NB TO 48” NB. (Seamless & 100% X-Ray Welded, Fabricated)

Type : Seamless / Welded / Fabricated

Bending Radius : R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom

Thickness : Sch 5s, Sch 10s, Sch 40s, Sch 80s, Sch 160s, Sch XXS

SS 304 pipe fittings Equivalent Grades


STANDARD WERKSTOFF NR. UNS JIS BS GOST AFNOR EN
SS 304 1.4301 S30400 SUS 304 304S31 08Х18Н10 Z7CN18‐09 X5CrNi18-10
SS 304L 1.4306/1.4307 S30403 SUS 304L - 03Х18Н11 Z3CN18‐10 X2CrNi18-9 / X2CrNi19-11
SS 304H 1.4301 S30409 SUS 304H - - - -
Differnt Types of SS 304 / 304L / 304H Pipe Fitting
  • ASTM A403 SS 304 SR Elbow
  • 304L SS Butt weld End Caps
  • SS 304H Butt weld Pipe Bends Supplier
  • Stainless Steel Butt weld Fittings
  • SS S30400 Buttweld Reducer
  • SS 304H Stub Ends Manufacturer
  • ASTM A403 SS S30403 Pipe Nipple
  • SUS 304L End Cap Manufacturer
  • Stainless Steel 1.4301 Pipe Nipples
  • ASME B16.9 304 SS 3D, 5D Elbow
  • 1.4948 SS Welded Pipe Fittings
  • ANSI B16.9 SS 304L Buttweld Fitting
  • Stainless Steel UNS S30409 Pipe Elbow
  • Stainless Steel DIN 1.4307 Stub Ends
Chemical Composition of SS 304 / 304L / 304H Pipe Fittings
Grade C Mn Si P S Cr Mo Ni N
SS 304 0.08 max 2 max 0.75 max 0.045 max 0.030 max 18 – 20 - 8 – 11 -
SS 304L 0.035 max 2.0 max 1.0 max 0.045 max 0.03 max 18 – 20 - 8 – 13 -
SS 304H 0.10 max 2.0 max 0.75 max 0.045 max 0.03 max 18 – 20 - 8 – 10.5 -
Mechanical Properties of Stainless Steel 304 Pipe Fittings
Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
8.0 g/cm3 1400 °C (2550 °F) Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 35 %
FAQ’s

These are wrought austenitic stainless steel pipe fittings manufactured from 18% chromium and 8% nickel alloy in three carbon variants – standard (304), low-carbon (304L), and high-carbon (304H) – each suited to specific temperature and welding requirements.

304 covers general service. 304L limits carbon to 0.03% for weld-without-anneal applications. 304H raises carbon to 0.04–0.10% to improve creep strength above 500°C – the three grades are not interchangeable in temperature-critical service.

Dairy and food processing lines, pharmaceutical manifolds, water treatment systems, architectural pipework, and general chemical service piping – covering operating pressures up to Class 3000 forged fittings.

Yes. 304H suits sustained service up to 870°C intermittent exposure. Its higher carbon content prevents the strength loss that 304 and 304L experience above 500°C in continuous-duty applications like furnace headers and superheater connections.

Yes. 304 resists atmospheric corrosion, fresh water, mild acids, and most food-grade media. Chloride-bearing environments above 60°C require 316L or duplex grades – 304 sensitises and pits under sustained chloride exposure at elevated temperatures.

Variants of temperature and corrosion are used in food and beverage, pharmaceutical, chemical processing, oil and gas, power generation, paper and pulp, water treatment, cryogenic storage and architectural construction.

Choose Nextgen Steel for SS 304 fittings because we offer full mill-to-ship traceability, third-party inspections, vast ASME stock, and custom cut-to-spec supplies that meet precise technical criteria. Contact us with your requirements for quotations.