The SP short-type flanged stub end is a core standard pipe fitting for low-pressure detachable pipeline connection systems, specifically designed for use with loose backing flanges, and is widely used in industrial and municipal pipelines u
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Short-type lap joint stub end SP has one end with a butt-weld bevel, welded and fixed to the main pipe; the other end is a flat lap joint flange face formed by hot stamping integrated molding, serving as the sealing pressure-bearing surface of the slip-on flange. The slip-on flange can rotate 360° for alignment, making it easier to handle issues such as bolt hole misalignment, fixed equipment nozzle angles, and construction in confined spaces during on-site installation. Our SP short-type lap joint stub ends use integrated molding technology, with no splicing welds, and the end face is precisely turned flat. Specifications cover mainstream diameters, and regular models are in stock, suitable for small and medium-sized projects, foreign trade bulk distribution, and standardized supporting procurement by equipment manufacturers. Specific configurations such as material, diameter, and wall thickness can be confirmed according to project requirements.
| Product Name | Short Stub End SP |
| Product Categories | Flanges & Stub Ends |
| Customization | Our factory has comprehensive non-standard customization capabilities for SP short-type lap joint stub ends, and can precisely match various special sizes, special wall thicknesses, special materials, and non-standard equipment connection working conditions. Supports arbitrary non-standard diameters from DN15–DN1200, non-standard short straight pipe sections, widened and thickened lap joint sealing faces, and low-pressure ultra-thin wall customization, adapting to imported equipment connection dimensions, non-standard parameters for old pipeline renovation, and supporting needs for niche equipment. In terms of processes, we can provide high-precision mirror-finished turned sealing faces, zero-tolerance precision machining, and appearance polishing treatment, adapting to clean pipeline and precision equipment supporting scenarios. Materials can be customized to special corrosion-resistant materials such as 2205 duplex steel, 15CrMo alloy steel, and C70600 copper-nickel alloy, adapting to mild seawater, acid-base corrosion, and medium-temperature low-pressure working conditions |
| MOQ | To adapt to the diversified procurement needs of foreign trade trial orders, engineering replenishment, bulk stocking, and long-term supporting for equipment factories, our factory has set extremely low threshold tiered minimum order quantities for SP short-type flanged short pieces, greatly reducing the difficulty of cooperation for foreign trade beginners and overseas small and medium-sized customers. Market-circulating mainstream DN20–DN300 conventional diameters, STD/SCH40 standard wall thickness, carbon steel and 304/ |
| Lead Time | Our factory has a dedicated stamping and precision machining production line and large-scale spot warehousing for SP short-type flanged short pieces, with massive inventory of conventional models, sufficient production capacity, stable scheduling, and industry-leading delivery speed, adapting to foreign trade urgent orders, engineering replenishment, and bulk distribution needs. For conventional carbon steel, 304, and 316 stainless steel standard spot specifications, after payment confirmation, complete fine inspection and protective packaging within 24–48 hours |
| Packaging | SP short-type flanged short pieces adopt a foreign trade standardized moisture-proof and collision-proof packaging system, specifically protecting the flanged sealing end face and welding groove, eliminating bumps, scratches, rust, and deformation during long-distance sea transportation, adapting to international sea, air, and land long-distance logistics. Each individual product is fully wrapped with PE dust-proof film, the precision flanged sealing surface is affixed with a special anti-scratch protective film, and the welding groove is equipped with a collision-proof protective sleeve, eliminating damage to high-precision working surfaces. Products of the same specification are neatly classified and packed into thickened export-specific cartons, with high-strength moisture-proof desiccant placed inside the cartons, effectively resisting oxidation and rust caused by high humidity, salt spray, and rain exposure during ocean shipping. The outer layer of the carton is wrapped with waterproof stretch film for overall reinforcement and sealing, preventing water ingress and carton breakage. Large-volume full-container orders are uniformly and neatly stacked on fumigation-free solid wood pallets |
| Reference Price | Inquiry |
| Standard | MSS SP43 |
Short Type Stub End SP is a standard lap joint fitting used with lap joint flanges, manufactured to the MSS SP43 standard. One end is a butt weld bevel, which is welded and fixed to the main pipe; the other end is a flat flanged face formed by hot stamping in one piece, serving as the flange sealing pressure-bearing surface. The lap joint flange can rotate freely 360°, making alignment easier during installation. Compared with the LP Long Type Stub End, the SP Short Type has a shorter straight pipe section, a more compact structure, and lighter weight, making it suitable for low-pressure ambient-temperature piping systems with conventional anti-corrosion requirements that need frequent disassembly or are in space-constrained locations. Our SP Short Type Stub Ends are produced with a one-piece forming process, with no spliced welds, and the end face is precision-turned flat. Regular models are in stock, making them suitable for small and medium-sized projects, foreign trade bulk distribution, and standardized supporting procurement by equipment manufacturers.
The core advantages of the SP Short Type Stub End are compact structure, high cost-effectiveness, strong versatility, and time-saving installation. Compared with the LP Long Type, the SP stub end has a shorter body and uses less material, resulting in lower per-unit procurement cost and lower full-container logistics costs, making it suitable for foreign trade bulk volume and low-price infrastructure projects. The product adopts hot stamping one-piece forming, with no spliced welds and no sand holes or gas pores, providing stable pressure resistance under low-pressure working conditions. The flanged end face is CNC precision-turned flat, with high fit with gaskets and good sealing performance. The lap joint flange can rotate 360° for alignment, reducing the trouble of bolt hole misalignment and construction in narrow spaces during on-site installation. For standard in-stock specifications in regular carbon steel, 304, and 316 stainless steel, precision inspection and protective packaging are completed within 24–48 hours after payment confirmation.
The SP Short Type Stub End is mainly used in low-pressure ambient-temperature piping systems with conventional anti-corrosion requirements that need frequent disassembly or are in space-constrained locations. In environmental water treatment, it can be used for sewage transmission pipelines, pure water equipment piping, auxiliary pipelines for exhaust gas treatment, and reclaimed water reuse system piping. In municipal infrastructure, it can be used for urban water supply and drainage networks, auxiliary heating pipelines for residential communities, temporary pipelines for municipal renovation, and park transmission pipelines. In light industry and chemicals, it can be used for auxiliary pipelines in chemical workshops, branch pipes for chemical agent transportation, ambient-temperature material storage pipelines, and ordinary anti-corrosion process pipelines. In equipment supporting, it can be used for heat exchanger connections, external piping for pressure vessels, cooling pipelines for electromechanical equipment, and connection ports for small fluid equipment. It is also suitable for outdoor ambient-temperature pipelines, indoor piping in equipment-dense and narrow spaces, and industrial piping systems that require regular disassembly for inspection, cleaning, and maintenance.
The SP Short Type Stub End is manufactured to the MSS SP43 standard, with regular diameters DN20–DN300, regular wall thicknesses STD/SCH40, and optional carbon steel, 304/304L, 316/316L stainless steel; special materials such as 2205 duplex steel, 15CrMo alloy steel, and C70600 copper-nickel alloy can also be confirmed according to project requirements. We support non-standard diameters DN15–DN1200, non-standard short straight pipe sections, widened and thickened flanged sealing faces, and low-pressure ultra-thin wall customization, and can perform one-on-one processing according to customer drawings, samples, or technical agreements. For specific pressure ratings, material matching, and flange pairing, please contact us for confirmation.
We set tiered minimum order quantities for SP Short Type Stub Ends, with a relatively low threshold for regular diameters, making it convenient for foreign trade trial orders, project replenishment, bulk stocking, and long-term supporting procurement by equipment factories. For standard in-stock specifications in regular carbon steel, 304, and 316 stainless steel, precision inspection and protective packaging are completed within 24–48 hours after payment confirmation. The lead time for non-standard customization is confirmed according to drawings and quantity. Packaging uses full PE dust-proof film wrapping, with scratch-resistant protective film applied to the flanged sealing face, impact-resistant protective sleeves added to the weld bevel, thickened export cartons plus moisture-proof desiccant, and fumigation-free solid wood pallets for reinforcement on full-container orders. We support customized English shipping marks, LOGOs, specifications and models, and batch numbers.
We provide pre-sales and after-sales support for B2B customers purchasing SP Short Type Stub Ends. Before sales, we can assist in confirming working-condition selection, material matching, pressure rating adaptation, flange pairing, and installation connection. After sales, we provide technical answers on welding processes, disassembly and maintenance, and piping supporting; we provide full-process logistics tracking after order shipment and assist overseas customers with customs clearance and receipt. The product warranty period is 18 months. During the warranty period, quality problems caused by non-human damage are repaired or replaced free of charge, with 7×24-hour online foreign trade after-sales response.
For low-pressure ambient-temperature, municipal, sewage, and equipment auxiliary pipelines, choose the SP Short Type, which is cost-effective and compact to install; for high-temperature and high-pressure, main process pipelines, and power station and marine projects, choose the LP Long Type, which offers higher safety. For specific selection, please contact us to confirm the working-condition parameters.
Yes. SP short-type flanged short pieces are suitable for Class 150 and PN16 and below conventional low-pressure pressure pipelines, and are standard fittings for national standard low-pressure pipelines. For specific pressure ratings and working condition compatibility, please contact us for confirmation.
SP short-type uses less material, has a lower unit price, saves more on logistics, has sufficient stock, and has faster delivery times, making it suitable for large-volume distribution and low-price infrastructure projects. For standard stock specifications in conventional carbon steel, 304, and 316 stainless steel, precision inspection and protective packaging are completed within 24–48 hours after payment confirmation.
Yes. We can customize non-standard DN15–DN1200 diameters, non-standard short straight pipe sections, widened and thickened flanged sealing surfaces, low-pressure ultra-thin walls, as well as special materials such as 2205 duplex steel, 15CrMo alloy steel, and C70600 copper-nickel alloy. One-on-one processing can be carried out according to customer drawings, samples, or technical agreements.
We can provide customs clearance and acceptance documents such as 3.1 material certificates, spectral reports, CE certification, and certificates of conformity. For specific document requirements, please contact us for confirmation.
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