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Heavy-Duty Forged Industrial Pipeline Connections Carbon Steel Flanges custom

Heavy-Duty Forged Industrial Pipeline Connections Carbon Steel Flanges Manufacturers

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Material & Manufacturing Process

Premium Carbon Steel Flanges | Heavy-Duty Forged Industrial Pipeline Connections.

Manufactured in full compliance with ASME B16.5, ASME B16.47, and EN 1092-1 standards, our carbon steel flanges deliver superior sealing performance and structural strength. Utilizing advanced closed-die forging, ring rolling, precision CNC machining, and heavy hydraulic presses up to 6,800 tons, we process premium certified carbon steel grades. This includes ASTM A105, A350 LF2 Class 1/2 for low-temperature environments, and high-yield line pipe grades like ASTM A694 F42 through F70. Fully compliant with NACE MR0175/ISO 15156 for sour service, all flanges undergo normalized heat treatment, smooth serrated face machining, and mandatory 100% NDT inspection (UT, MT, PT) to guarantee complete internal soundness.

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Carbon Steel Flanges Technical Specifications

ParameterSpecification Detail
Material GradeASTM A105, ASTM A694 F42, F70
Design StandardASME B16.5, ASME B16.47, EN 1092-1, NACE MR0175/ISO 15156
Pressure ClassClass 1
CertificationPED, AD2000, DNV, NORSOK M-650, ABS, BV, ISO, NACE MR0175, EAC
Testing / InspectionUltrasonic (UT), Magnetic Particle (MT), Penetrant (PT)

Specification Range

Jiangyin Gaoxin Pipe Fittings Co., Ltd. manufactures a wide selection of carbon steel Weld Neck, Slip-On, Blind, Threaded, Socket Weld, and Lap Joint flanges. Driven by heavy hydraulic forging presses with capacities reaching up to 6,800 tons, our facility fabricates precision flange 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"). Pressure ratings span Class 150 to Class 2500, as well as PN6 to PN400, featuring Raised Face (RF), Flat Face (FF), and Ring Type Joint (RTJ) sealing profiles to meet exact project specifications.

Product Advantages

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

  • International Certification: Our carbon steel flanges hold recognized global credentials, including PED 2014/68/EU, AD2000, EAC, NORSOK M-650, and marine classification approvals from DNV, ABS, and BV. Specialized yellow anti-rust oil, black varnish, or rust-preventative coatings protect precision flange faces during ocean freight
  • Full Traceability & Documentation: Every shipment is delivered with an EN 10204 3.1 Mill Test Certificate featuring full 100% heat-number raw material traceability
  • Rigorous Testing & Inspection: Paired with seaworthy protective packaging, our flanges protect client infrastructure while lowering lifetime total cost of ownership.

Applications

Engineered to ensure reliable, leak-free bolt joints under severe operating pressure and temperature fluctuations, our carbon steel flanges are critical components across global industrial sectors. They are extensively deployed in long-distance oil and gas transmission pipelines, onshore oil refineries, chemical processing plants, thermal power stations, and high-pressure steam distribution systems. Furthermore, our NACE-compliant low-temperature carbon steel flanges serve in LNG receiving terminals, FPSO vessels, and offshore production platforms. Their robust mechanical strength, precision bolt-hole positioning, and zero-leak sealing integrity guarantee continuous, safe performance across demanding processing environments worldwide.

  • Q: What size and pressure range is available for Carbon Steel Flanges?
  • A: We supply Carbon Steel Flanges covering Class 1 pressure ratings, manufactured according to project specifications.
  • Q: What materials and standards apply to Carbon Steel Flanges?
  • A: We manufacture Carbon Steel Flanges in materials such as ASTM A105, ASTM A694 F42, F70 and to standards including ASME B16.5, ASME B16.47, EN 1092-1, 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 Heavy-Duty Forged Industrial Pipeline Connections Carbon Steel Flanges 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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