Large Bore Stainless Steel Threaded High Pressure flange
5 week ago
Engineered for superior performance in demanding industrial environments, this Threaded Flange Carbon Steel BSP offers a reliable, weld-free alternative for high-pressure piping systems. Designed with precision and built to last, it seamlessly integrates into fluid transfer networks across oil & gas, chemical processing, power generation, and water treatment sectors. As a robust Carbon Steel Threaded Flange BSP solution, it ensures secure connections without the need for welding—reducing installation time, minimizing heat-affected zones, and eliminating the risk of weld failure. This innovative design combines mechanical strength with operational flexibility, making it an ideal choice for professionals seeking durability, efficiency, and compliance with international standards such as ASME B16.3, ISO 228, and DIN 2633.

The key features of this threaded flange include a fully machined BSP (British Standard Pipe) thread profile, ensuring tight, leak-proof sealing even under fluctuating pressure conditions. Crafted from high-grade carbon steel (typically ASTM A105 or equivalent), it delivers excellent tensile strength, impact resistance, and corrosion resilience—particularly when used with compatible gaskets and sealants. Its seamless threading eliminates weak points associated with welded joints, while the flanged interface provides uniform load distribution, reducing stress concentrations and extending service life. The absence of welding not only simplifies maintenance but also enhances safety during retrofitting and system upgrades.

Delving deeper into its construction, this Threaded Flange Carbon Steel BSP is manufactured using advanced CNC machining techniques, guaranteeing dimensional accuracy within ±0.05 mm tolerance. The internal and external surfaces undergo thorough surface finishing processes—including shot blasting and passivation—to prevent scaling, pitting, and premature degradation. Available in various nominal pipe sizes (from 1/2" to 4") and pressure classes (Class 150 to 300), it supports a wide range of applications requiring both versatility and reliability. The flange body features a raised face (RF) configuration, which improves sealing integrity when paired with standard ring-type joint (RTJ) or spiral wound gaskets. Additionally, the bolt hole pattern adheres strictly to ANSI B16.5 specifications, enabling compatibility with standard bolts and nuts for secure fastening.

Industries utilizing this product benefit from reduced downtime due to faster assembly times—no specialized welding equipment or certified welders required. It’s particularly advantageous in hazardous areas where open flames or high heat are prohibited. In offshore platforms, refineries, and manufacturing plants, this weld-free connection minimizes fire hazards and streamlines inspection protocols. Furthermore, its recyclable material composition aligns with sustainability goals, supporting green engineering practices across global infrastructure projects.

Users consistently highlight the ease of installation, long-term reliability, and consistent performance under extreme temperature variations—from -20°C to +450°C. Maintenance teams appreciate the ability to disassemble and reassemble components without compromising structural integrity. Real-world feedback confirms that this Carbon Steel Threaded Flange BSP maintains optimal sealing performance over extended service cycles, outperforming traditional flanged joints in vibration-prone environments.

Commonly sought after as a threaded pipe flange for carbon steel systems, BSP-threaded flange connector, or weld-free pipe coupling flange, this product stands out among alternatives due to its balance of cost-efficiency and technical excellence. Related terms frequently used in inquiries include mechanical flange joint, non-welded flange fitting, threaded end flange for pipe, carbon steel BSP flange with male threads, and threaded flange for high-pressure lines. These long-tail keywords reflect the growing demand for safe, efficient, and modular piping solutions in modern industrial setups.
When selecting a replacement or upgrade for aging pipeline infrastructure, professionals prioritize components that reduce lifecycle costs while maximizing uptime. This Threaded Flange Carbon Steel BSP fits perfectly within that framework. Whether replacing damaged sections, expanding existing networks, or designing new installations, it provides a future-ready solution backed by proven engineering principles and rigorous quality control.
For those navigating complex piping challenges—especially where welding is impractical or unsafe—this flange delivers peace of mind through its robust design, standardized compliance, and field-proven track record. It’s more than just a connection; it’s a strategic asset in maintaining operational continuity and safety across critical systems worldwide.
Frequently Asked Questions:
What materials are used in the construction of this threaded flange? This flange is made from premium-grade carbon steel, typically conforming to ASTM A105 or similar specifications, offering high tensile strength and resistance to fatigue and wear.
Is this flange suitable for use with corrosive fluids? Yes, when paired with appropriate gasket materials (such as PTFE, EPDM, or graphite) and protective coatings, this flange performs reliably in environments involving aggressive chemicals, steam, and hydrocarbons.
Can I install this flange without welding tools? Absolutely. The weld-free design allows for straightforward assembly using standard wrenches and torque tools—ideal for field repairs and temporary installations.
Does it meet international piping standards? Yes, it complies with major standards including ASME B16.3 for pipe threads, ISO 228 for BSP dimensions, and DIN 2633 for flange configurations.
What size options are available? Available in nominal pipe sizes ranging from 1/2 inch to 4 inches, with pressure ratings from Class 150 to Class 300, ensuring adaptability across diverse systems.
How does this compare to welded flanges in terms of longevity? In dynamic environments with thermal cycling or vibration, this threaded flange often exceeds the lifespan of welded joints due to reduced stress accumulation and no heat-induced material degradation.

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Appearance Customization
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Natural finish, sand blasting, galvanization, painting and logo marking customization |
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Material customization
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(1) Carbon steel: 20#, 45#, Q235(B), 245R, 20G, 16Mn(Q345B-E)
(2) Alloy steel: 15CrMoG, 12Cr1MoVG, 12CrMoG, Cr5Mo, P22 (3) Stainless steel: 0Cr18Ni9(304), 00Cr19Ni10(304L), 0Cr25Ni20(310S), 0Cr17Ni12Mo2(316), 00Cr17Ni14Mo2(316L) (4) Nickel-based alloy steel: Monel 400, K-500, R4-05, Inconel 600, 617 (5) Duplex steel: SAF2304, 3RE60, SAF2205, 10RE51, SAF2507 (6) Line pipe steel: X56, X60, X65, X70, X80 (7) Oil casing steel: J55, K55, N80, L80, C90 (8) Spiral steel pipe: Q235A-B, Q345B (9)Pure Copper,Brass,Aluminum Bronze,Cupronickel Or Customized to your needs |
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Processing technology customization
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Optional Processes:Forging, hot pressing, cold pressing, pushing forming, Machined by CNC
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Production standards:Chinese national & industrial standards including GB/T12459, GB/T13401, HG/T20592, JB/T81, GB/T9124, GB/T9948, GB/T3091, GB/T9711, GB/T5310, GB/T8163, SH/T3408; ASME, EN, DIN, JIS international standards
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Dimension customization
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Production range: Flange DN10-DN6000, customizable in all pressure classes and material grades.
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Sealing Type
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FF, RF, RJ, FM, M, T, G, etc.
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Pressure Rating
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Class:150#, 300#, 600#, 900#, 1500#, 2500#, etc.
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PN: PN2.5, PN6, PN10, PN16, PN25, PN40, PN63, PN100, PN160, etc.
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Sealing Finish
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Smooth or Spiral Finish (As your request)
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Varieties
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PL (Plate Flat), WN (Weld Neck), BL (Blind), SO (Slip-ons), SW (Socket Welds), TH (threaded), LF/SE(Lapped Flange/Stub ends), PJ/SE, LF/SE, etc.
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Special Design
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Available
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Warranty
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1 year
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Package
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Cartons, pallet, cases
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Production period
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In 15-60 days upon order quantity
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Payment term
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T/T, Western Union, Small-amount payment
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Certificate
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ISO14001,ISO9001,ASME,CCC,CE
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Closest port for shipment
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Shanghai |
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Main Product:
Steel Pipes and Tubes,
Stainless Steel Flange ,
Stainless Steel Valve,
Pipe Fittings,
Stainless Steel Products,
Sealing and Gaskets