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DN 3800 Ultra-Large Diameter Piping Components custom

DN 3800 Ultra-Large Diameter Piping Components Manufacturers

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Material & Manufacturing Process

Custom DN 3800 Ultra-Large Diameter Piping Components | Heavy-Duty Formed Fittings & Forged Flanges.

Manufactured in full compliance with ASME B16.9, ASME B16.47, and EN 10253/EN 1092-1 standards, our DN 3800 (150") ultra-large diameter components represent the pinnacle of heavy industrial pipe fabrication. Driven by our 6,800-ton hydraulic forging presses, specialized sectional hot-forming, segment bending, and automated submerged arc welding (SAW), we process a broad spectrum of certified materials. This includes carbon steel (ASTM A105, A234 WPB, A350 LF2), stainless steel (304/304L, 316/316L), duplex & super duplex alloys (S31803, S32750), and nickel-based alloys (Inconel 625, 254SMO). Fully NACE MR0175 compliant, each DN 3800 component undergoes post-weld heat treatment (PWHT), 5-axis CNC machining, and 100% NDT inspection.

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DN3800 Ultra-Large Diameter Piping Components Technical Specifications

ParameterSpecification Detail
Material GradeASTM A105, S31803, S32750, Inconel 625, 254SMO
Design StandardASME B16.9, ASME B16.47, EN 10253, EN 1092-1, NACE MR0175
Pressure ClassClass 150 to Class 900
CertificationPED, AD2000, DNV, NORSOK M-650, ABS, BV, ISO, NACE MR0175, EAC

Specification Range

Jiangyin Gaoxin Pipe Fittings Co., Ltd. specializes in engineering extra-large diameter seamless and welded fittings, tees, reducers, elbows, and forged flanges up to DN 3800 (150 inches). Supported by unmatched 6,800-ton press capacity, our factory accommodates heavy wall thicknesses ranging from light Schedule 10/20 up to custom thick-wall specifications reaching 100mm. Pressure classes span Class 150 to Class 900 as well as PN6 to PN160. Precision laser scanning and coordinate measurement systems rigorously inspect roundness tolerances, bevel angles, and bolt-hole circle dimensions, ensuring perfect fit-up and effortless alignment during complex site installation.

Product Advantages

Operating since 1993 under an ISO 9001 quality system, our facility offers unmatched structural reliability for high-capacity fluid transmission

  • High-Temperature Stability: Our DN 3800 components hold prestigious global certifications, including PED 2014/68/EU, AD2000, EAC, NORSOK M-650, and marine classification approvals from DNV, ABS, and BV. Heavy-duty reinforced wall structures and smooth interior contours eliminate flow restriction, withstand thermal movement, and resist extreme line surging
  • Full Traceability & Documentation: Every shipment is backed by an EN 10204 3.1 Mill Test Certificate with full raw material heat-number traceability
  • Corrosion Resistance: Heavy-duty seaworthy wooden framing, anti-corrosion coating, and bevel protectors safeguard components during ocean freight.

Applications

Engineered to handle massive volumetric throughput and high-pressure fluid distribution, our DN 3800 fittings and flanges are vital components in mega-scale infrastructure projects worldwide. They are extensively deployed in municipal water intake pipelines, hydroelectric power station penstocks, seawater desalination intake headers, and cooling water circuits for nuclear and thermal power plants. Furthermore, our NACE-compliant carbon, stainless steel, and alloy DN 3800 fabrications serve in large-scale LNG receiving terminals, offshore platforms, and refinery flare headers. Their exceptional pressure containment, structural rigidity, and zero-leak reliability guarantee continuous operational safety across critical global energy and civil engineering installations.

  • Q: What size and pressure range is available for DN3800 Ultra-Large Diameter Piping Components?
  • A: We supply DN3800 Ultra-Large Diameter Piping Components covering Class 150 to Class 900 pressure ratings, manufactured according to project specifications.
  • Q: What materials and standards apply to DN3800 Ultra-Large Diameter Piping Components?
  • A: We manufacture DN3800 Ultra-Large Diameter Piping Components in materials such as ASTM A105, S31803, S32750, Inconel 625 and to standards including ASME B16.9, ASME B16.47, EN 10253, with full material traceability available on request.
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Jiangyin Gaoxin Pipe Fittings Co., Ltd.
About Us
JIANGYIN GAOXIN PIPE FITTINGS CO.,LTD.
Our company is a professional manufacturer of pressure piping components. As DN 3800 Ultra-Large Diameter Piping Components Manufacturers，Our product range covers butt-weld, socket-weld, and threaded pipe fittings, including flanges and customized non-standard parts. These products are widely used in industries such as oil & gas, chemical processing, power generation, shipbuilding, papermaking, metallurgy, pharmaceuticals, and food processing. We manufacture according to standards such as ASME, EN,JIS,DIN,ANSI,GOST, MSS, GB/T,HG, DL, SH, SY,and have a complete range of inspection equipment, a strict quality control system, and various certifications（PED,AD2000,EAC, ABS,BV, DNV,NORSOK M650, ISO9001,ISO14001,ISO45001,etc.）, making us a leader in the industry.

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