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High-Precision Butt Weld Stub-Ends custom

High-Precision Butt Weld Stub-Ends Manufacturers

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Material & Manufacturing Process

High-Precision Butt Weld Stub-Ends | Seamless & Forged Lap Joint Flange Companions.

Manufactured in full compliance with ASME B16.9 and EN 10253 standards, our butt weld stub-ends are precision-engineered to pair seamlessly with lap joint flanges for flexible pipeline alignment. Utilizing advanced hydraulic forging presses up to 6,800 tons, hot-flanging, and precision CNC machining techniques, 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 compliant with NACE MR0175/ISO 15156 for sour service, each stub-end undergoes solution heat treatment, smooth radius machining, and mandatory 100% NDT inspection to ensure total structural integrity.

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Butt Weld Stub-Ends Technical Specifications

ParameterSpecification Detail
Material GradeASTM A105, S31803, S32750, Inconel 625, 254SMO
Design StandardASME B16.9, EN 10253, NACE MR0175/ISO 15156
CertificationPED, AD2000, DNV, NORSOK M-650, ABS, BV, ISO, NACE MR0175, EAC

Specification Range

Jiangyin Gaoxin Pipe Fittings Co., Ltd. supplies a wide selection of Type A, Type B, and Type C butt weld stub-ends in both Short Pattern and Long Pattern executions. Powered by heavy hydraulic presses with capacities reaching up to 6,800 tons, our factory fabricates high-integrity components across an expansive size range. Dimensional coverage extends from small-bore lines (DN15 / 1/2") up to extra-large outer diameter fabrications reaching DN3800 (150"). Wall thicknesses cover standard Schedule 10/40/80 up to XXS and custom heavy-wall specifications up to 100mm. Advanced coordinate measurement systems rigorously verify lap face roughness, radius curvature, and end-bevel profiles for effortless site fitting.

Product Advantages

Operating since 1993 under an ISO 9001 certified quality management system, our company guarantees exceptional pressure containment, precise gasket seating surfaces, and high fatigue endurance

  • Corrosion Resistance: Our stub-ends carry recognized global credentials, including PED 2014/68/EU, AD2000, EAC, NORSOK M-650, and marine classification approvals from DNV, ABS, and BV. The detachable lap joint setup allows fast bolt-hole alignment and drastically cuts project material costs by enabling cheaper carbon steel backing flanges on corrosion-resistant alloy lines
  • Leak-Proof Connection Integrity: Every shipment includes an EN 10204 3.1 Mill Test Certificate with full heat-number traceability, packed securely in sea-worthy export crates to protect critical sealing surfaces.

Applications

Engineered to streamline installation and routine maintenance in piping systems requiring frequent dismantling, our butt weld stub-ends are vital components across global process industries. They are extensively deployed in marine piping loops, offshore oil and gas facilities, FPSO topsides, and subsea fluid handling systems. Furthermore, our NACE-compliant carbon, stainless steel, and special alloy stub-ends serve in onshore petrochemical plants, LNG processing terminals, chemical synthesis units, desalination plants, and industrial water treatment networks. Their superior sealing precision and structural durability guarantee continuous, zero-leak operational safety across severe temperature, pressure, and highly corrosive application environments worldwide.

  • Q: What materials and standards apply to Butt Weld Stub-Ends?
  • A: We manufacture Butt Weld Stub-Ends in materials such as ASTM A105, S31803, S32750, Inconel 625 and to standards including ASME B16.9, EN 10253, NACE MR0175/ISO 15156, with full material traceability available on request.
  • Q: Can Butt Weld Stub-Ends be customized for special project requirements?
  • A: Yes, our engineering team can review drawings, material grades and inspection requirements to provide customized Butt Weld Stub-Ends solutions for EPC and industrial projects.
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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 High-Precision Butt Weld Stub-Ends 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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