SW Socket Weld Pipe Cap

Overview

Guojie SW socket weld pipe caps are integrally die-forged high-pressure pipe fittings, used for end closure of small-diameter high-pressure pipeline systems. The pipe end is inserted into the socket of the pipe cap, and then circumferential welding is performed to achieve permanent sealing of the pipe opening. The product strictly implements ASME B16.11 and GB/T14383 forged pipe fitting standards, adopts hot die forging integrated molding, has a dense internal structure, no sand holes, pores, porosity, or other defects, and has strong pressure-bearing capacity. Specifications are mainly small diameters from DN6–DN100, pressure ratings include 3000LB, 6000LB, and 9000LB American standard pound ratings, and materials cover carbon steel, stainless steel, alloy steel, duplex steel, etc. The socket weld structure is compact and occupies little installation space, making it suitable for working conditions with dense pipelines and limited assembly space, with small welding deformation and stable sealing.

Key Selling Points

The product adopts integral hot die forging integrated molding, with dense material, no pores, sand holes, or porosity defects, and a uniform internal structure. Its compressive strength and impact resistance are superior to ordinary stamped pipe fittings, and it can withstand high pressure and high-temperature impact for a long time. The socket nesting structure cooperates with full welding sealing to form dual protection and reduce leakage risk. The socket depth, cavity bore diameter, and welding bevel are all precision machined, with dimensional errors controlled within ±0.1mm, and small welding deformation. The structure is compact and suitable for narrow equipment spaces and dense pipeline layouts. Specifications, materials, and pound ratings cover a wide range, and it supports customization of non-standard bore diameters, special socket depths, thickened wall thickness, and special materials, with one-to-one production according to customer drawings or samples.

Applications

SW socket weld pipe caps are specially designed for small-diameter, high-pressure, high-temperature, precision, and narrow-space industrial scenarios. In energy and heavy industry scenarios, they are suitable for end closure of high-pressure oil and gas branch pipes, high-pressure natural gas instrument pipelines, high-pressure thermal power steam pipelines, and nuclear power auxiliary pressure pipelines. In fine industrial scenarios, they are used for high-pressure anti-corrosion sealed pipeline closure in fine chemicals, pharmaceutical clean environments, and high-end manufacturing, suitable for clean, leak-free, and high-safety working conditions. In special equipment scenarios, they cover high-pressure boilers, pressure vessel instrument pipe openings, high-pressure heat exchange equipment branch pipelines, and fire protection high-pressure stabilization system closure. In ship and marine engineering scenarios, they are suitable for ship high-pressure pipelines and offshore platform precision pipeline closure, requiring vibration resistance, impact resistance, and stable sealing performance. The product has a compact structure, small welding deformation, and high precision, and can adapt to confined spaces such as dense pipelines, narrow equipment cavities, and indoor precision cabinet pipelines.

Specifications

Nominal diameter range DN6–DN100 (1/8”–4”), pressure ratings cover 3000LB, 6000LB, and 9000LB American standard high-pressure pound ratings, corresponding to PN100–PN220 national standard ultra-high pressure ratings. Implementation standards are ASME B16.11, GB/T14383, and BS3799. The forming process is integral hot forging and die forging integrated molding, and the connection method is standard SW socket weld structure. Working temperature range: carbon steel -20℃ to 450℃, stainless steel -80℃ to 600℃, alloy steel can withstand high-temperature steam working conditions above 550℃. Materials cover carbon steel, stainless steel, alloy steel, and duplex steel, and can customize 15CrMo, 12Cr1MoV heat-resistant alloy steel, 2205/2507 duplex steel, titanium alloy, etc. Surface processes include blackening anti-rust, sandblasting descaling, stainless steel pickling and passivation, and mirror polishing. For specific specifications, materials, pound ratings, and special working condition adaptation, please contact us for confirmation.

Purchase & Delivery

For conventional standard specifications, conventional pound ratings, and conventional material in-stock models, MOQ is as low as 1 piece, supporting overseas precision pipe fitting sample inspection and high-end engineering single-piece procurement. For conventional 3000LB/6000LB standard in-stock models, after payment confirmation, precision inspection, packing, and warehouse dispatch shipment are completed within 24–48 hours; for conventional standard orders within 1000 pieces, please contact us to confirm the delivery time. The product adopts exclusive export packaging for high-end precision high-pressure pipe fittings. Each small-diameter socket weld pipe cap is individually wrapped with anti-static PE film, paired with an individual shockproof foam sleeve, to eliminate transportation friction scratches, port deformation, and damage to the precision cavity. Products are neatly classified and boxed, with moisture-proof desiccant inside. The entire box is reinforced with thickened export cartons, externally wrapped with waterproof stretch film, and bulk goods are uniformly fixed on fumigation-free solid wood pallets, fastened with high-strength strapping. All packaging complies with customs export inspection standards and does not require secondary fumigation. Customer-specific shipping marks, LOGOs, specification labels, and batch numbers can be customized as needed.

Service & Support

All products undergo triple inspection before leaving the factory: forging flaw detection, precision dimensional measurement, and high-pressure pressure testing, ensuring pure materials, precise dimensions, pressure resistance meeting standards, and no forging defects. If there are factory quality problems, precision deviations, material inconsistency, or process defects, unconditional free return and exchange and replacement shipment are supported, and the factory bears full logistics losses. The pre-sales professional technical team provides guidance on high-pressure pound rating selection, material adaptation, working condition analysis, and precision assembly solutions. After-sales provides high-pressure welding process guidance, precision pipeline installation Q&A, and engineering technical consultation. After order shipment, full-process logistics tracking is provided, synchronizing logistics updates in real time, and assisting overseas customers with rapid customs clearance and receipt. The product warranty period is 18 months. During the warranty period, non-human-caused quality problems are repaired and replenished free of charge. Exclusive foreign trade after-sales responds online 7×24 hours.