SMSTEEL
SMSTEEL
In the complex architecture of modern industrial piping, the Slip On Plate Flange (SOP) stands as a cornerstone of structural integrity and operational flexibility. Unlike welded neck flanges, plate flanges are slipped over the pipe and then welded both inside and outside to provide sufficient strength and prevent leakage. This "hubless" design is particularly valued in low-pressure applications and non-critical systems where cost-efficiency and ease of installation are paramount.
As a leading Slip On Plate Flange Factory, we recognize that procurement isn't just about buying a metal ring; it's about ensuring the safety of fluid transport systems. Our manufacturing process adheres to rigorous international standards including ASME B16.5, EN 1092-1, and JIS B2220, ensuring that every plate flange we produce offers the "Information Gain" required for engineers to make informed, data-driven decisions on-site.
The global demand for plate flanges is projected to grow by 5.4% CAGR through 2030, driven by rapid urbanization in Southeast Asia and the modernization of water treatment facilities in the Middle East. Our factory is positioned at the nexus of this growth, providing scalable solutions for global enterprises.
China's industrial clusters, particularly in Hebei and Liaoning, offer a unique ecosystem where raw material procurement, precision forging, and heat treatment coexist within a 50-mile radius. This reduces logistics costs and lead times significantly compared to European or North American counterparts.
Our facility houses over 20 R&D engineers with a decade of experience. We don't just manufacture; we innovate. From optimizing the metallurgical grain structure to enhancing corrosion resistance through specialized coatings, our "Information Gain" approach ensures superior product longevity.
By leveraging high-frequency welded lines and automated CNC machining, we achieve a monthly output of 100,000 tons. This scale allows us to offer premium Grade A steel flanges at a price point that empowers global contractors to win more bids without compromising on safety.
Modern factories are now integrating QR codes on each flange for full traceability, from the heat number of the steel to the final QC inspector's ID.
The shift toward "Green Steel" (low-carbon production) is becoming a procurement requirement for EU-based infrastructure projects.
Advancements in plate rolling technology now allow plate flanges to handle higher pressure ratings (PN16, PN25) that were previously reserved for forged hubs.
The rise of prefabricated piping modules requires flanges with tighter tolerances (+/- 0.5mm) to ensure perfect alignment in off-site assembly.
STEP MILLION STEEL SUPPLY CHINA CO., LTD. founded in 2010, is a leading steel material supplier and manufacturer. Our production facilities cover over 66,700 square meters and employ more than 300 staff members across eight High Frequency welded lines.
We specialize in a comprehensive range of products: pre-galvanized steel pipe, hot dip galvanized steel pipe, ERW pipe, square and rectangular tube, scaffolding tube, steel plate coils, and specialized materials like SPCC, SPHC, and SGCC/SECC.
"Serve the public, focus on quality." - Our core philosophy drives us to maintain strategic partnerships with giants like LG Electronics and Xizi United.
Used in HVAC systems and low-pressure water distribution networks in high-rise commercial buildings.
Precision steel components for structural frames in large-scale industrial refrigeration units.
Exhaust system connections and structural chassis reinforcements where vibration resistance is key.
Over 20 inspectors, each with over 10 years of experience, oversee every stage of production. We utilize testing equipment from Germany and Japan to ensure every Slip On Plate Flange meets GB, ASTM, BS, or DIN certifications.
A Plate Flange is a flat ring without a hub, typically used for lower pressure ratings (Class 150 or PN10). A Hubbed Slip On Flange has a raised neck (hub) that provides additional reinforcement for the pipe connection, suitable for higher stress environments.
Yes. Our R&D team can manufacture flanges based on specific drawings, including non-standard outer diameters, thicknesses, and bolt hole patterns, while maintaining structural integrity calculations.
We offer several surface treatments: Yellow/Black Vanish, Anti-rust Oil, Hot Dip Galvanizing, and Cold Electro-Galvanizing. For extreme environments, we recommend our Stainless Steel (304/316L) series.
Standard sizes are usually in stock. For custom production, our integrated supply chain allows us to complete manufacturing and QC within 15-21 days from order confirmation.
