The low-temperature steel branch outlet is an integrated reinforced branch pipe fitting specially used for deep cryogenic working conditions. It is mainly used for non-cut-off branch drainage operations on the side wall of the main pipe of
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Low-temperature steel branch outlet fittings are integrated reinforced pipe branch fittings, integrally die-forged and formed in accordance with MSS SP-97, GB/T19326, ASME B31.3, and ASME B31.8 standards, and manufactured through forging, low-temperature heat treatment, impact testing, and precision machining. The product does not require cutting the main pipe; it is directly welded onto the outer wall of the main pipe to lead out a branch, and comes with an integrated reinforcement structure, used to disperse stress at the pipe opening location and reduce the risk of brittle fracture and medium leakage caused by stress concentration in low-temperature environments. The materials are mainly ASTM A350 LF2 and A350 LF3 low-temperature forged steel; LF2 is suitable for temperatures from -46°C to 425°C, and LF3 is suitable for low temperatures down to -101°C. Pressure ratings cover American standard 2000LB, 3000LB, 6000LB, and 9000LB, nominal diameters from DN6 to DN100, wall thicknesses from SCH40 to XXS, and connection forms include butt welding, socket welding, NPT thread, and 45° miter. It mainly serves LNG engineering general contractors, air separation equipment installation contractors, low-temperature chemical infrastructure enterprises, oil and gas low-temperature transmission pipeline network construction units, as well as low-temperature pipe fitting traders and design institute selection personnel.
| Product Name | Low-Temperature Steel Branch Outlet |
| Product Categories | Branch Outlet |
| All technical parameters of low-temperature steel branch outlet fittings strictly follow ASME, MSS, and national low-temperature piping standards, and the parameters precisely adapt to deep-cold and high-pressure working conditions. Material parameters | The mainstream materials are ASTM A350 LF2 and A350 LF3 low-temperature forged steel, which undergo normalizing and quenching and tempering low-temperature heat treatment, and the low-temperature impact energy fully meets the standard. Temperature resistance parameters: LF2 is suitable for temperatures from -46℃ to 425℃, and LF3 is suitable for low temperatures down to -101℃, adapting to ultra-deep cryogenic working conditions. Pressure parameters: American standard 2000LB, 3000LB, 6000LB, and 9000LB high-pressure pound ratings, capable of withstanding combined low-temperature and high-pressure loads. Specification parameters: nominal diameter DN6-DN100, wall thickness SCH40 to XXS full series of thickened specifications. Connection methods include butt welding BW, socket welding SW, NPT thread, and 45° miter structure. Executive standards: MSS SP-97, ASME B3 |
| Customization | Our factory has one-stop deep non-standard customization capability for low-temperature steel branch outlets, and can fully meet the overseas customization needs of various ultra-low temperature, special high pressure, and special drawings. It supports customization of all low-temperature materials, and can produce A350 LF2 conventional low-temperature and A350 LF3 ultra-low temperature full-grade products, adapting to different cryogenic grade working conditions from -46℃ to -101℃. It supports customization of non-standard parameters, and can process low-temperature special branch outlets with unconventional pipe diameters, reducing size ratios, ultra-high pressure pound ratings, special thickened wall thickness, and special length specifications. It supports structural customization, and can produce branch outlets at any angle, embedded thickened reinforcement, extended nipples, and special interface structure styles. It supports process customization, including exclusive low-temperature heat treatment, low-temperature impact strengthening treatment, sandblasting and rust removal, and anti-rust and anti-corrosion coating treatment |
| MOQ | Our factory adopts a flexible foreign trade minimum order model for low-temperature steel branch outlets, fully adapting to the diverse procurement needs of low-temperature special pipe fitting sample testing, batch stocking, and engineering centralized procurement, with no high threshold restrictions. The MOQ for conventional LF2 material standard stock specifications is as low as 1 piece, supporting overseas customers' low-temperature working condition sample testing, project selection proofing, and drawing parameter coordination, greatly reducing the early-stage cost of high-end low-temperature projects |
| Lead Time | Our factory has a dedicated forging production line for low-temperature steel and standing stock inventory, and relies on a mature special pipe fitting supply chain system to ensure efficient and stable delivery of foreign trade cryogenic orders. Commonly used A350 LF2 conventional standard models in the market are sufficiently stocked. After order confirmation, parameter verification, and payment are completed, packaging and shipment can be completed within 24-48 hours, quickly responding to overseas LNG projects and air separation |
| Packaging | In view of the fact that low-temperature steel branch outlets are high-pressure precision special equipment and have foreign trade long-distance sea freight moisture-proof and anti-rust requirements, our factory has formulated an exclusive standardized export packaging plan to ensure that goods are transported long distances without damage. Each low-temperature steel branch outlet is first independently fully wrapped with thickened pearl cotton to avoid collision damage to precision-machined threads and bevels, and the outer layer is wrapped with waterproof and anti-rust vacuum film to isolate sea freight moisture and salt spray and prevent surface oxidation and rust. Small standard specifications are neatly packed into five-layer thickened shockproof export cartons, with buffer foam filled inside, pressure-resistant and drop-resistant; medium and large heavy-duty products are fixed on internationally fumigation-free solid wood pallets, reinforced and bound with steel straps, meeting global customs fumigation standards and can directly clear customs without re-inspection. All products are strictly classified and stacked according to material, model, pound rating, and specification |
| Reference Price | Inquiry |
Low-temperature steel branch outlets are quoted by material, pressure class, nominal diameter, wall thickness, and connection type, with prices subject to inquiry. Standard A350 LF2 in-stock specifications have an MOQ as low as 1 piece, suitable for sample testing and project selection prototyping; LF3 ultra-low-temperature material, non-standard pipe diameters, reducing size ratios, ultra-high-pressure classes, and special structures require customization according to drawings. Please contact us to confirm the minimum order quantity and production scheduling cycle. Common LF2 standard models can be packed and shipped within 24-48 hours after parameter verification and payment are completed. The delivery time for non-standard customized orders is confirmed according to the specific specifications and quantities. Packaging is carried out according to export sea freight requirements: each piece is fully wrapped in pearl cotton plus waterproof, rust-proof vacuum film; small specifications are packed in five-layer thickened export cartons; medium and large specifications use fumigation-free solid wood pallets reinforced with steel straps; the outer packaging is affixed with bilingual Chinese-English labels indicating material, low-temperature grade, standard, pressure, batch, and quantity. The entire batch of goods is wrapped in waterproof stretch film, suitable for sea, air, and land transport. You are welcome to provide dimensions, material, quantity, and operating conditions, and we will assist in confirming the configuration and providing a quotation.
In the pre-sales stage, we provide technical consultation on low-temperature operating condition diagnosis, cryogenic material selection, low-temperature grade matching, and pressure parameter adaptation, assisting in determining the selection of LF2 and LF3 as well as the matching of connection types. In the in-sales stage, dedicated customer service follows up on the order, synchronizing forging, low-temperature heat treatment, impact testing, quality inspection, and logistics progress, and supports order parameter adjustments and expedited production scheduling requirements. In the after-sales stage, products with quality defects under normal low-temperature operating conditions that are not caused by human damage are supported for return, exchange, and replacement, and we provide bilingual Chinese-English low-temperature pipe fitting welding process guidance, cryogenic pipeline installation specifications, and precautions for use under low-temperature operating conditions. We can assist customers in handling matters related to overseas customs clearance, project acceptance, and qualification verification. Long-term cooperative customers can discuss inventory reservation and priority production scheduling arrangements. Please contact us to confirm the specific warranty period and after-sales terms.
Ordinary carbon steel is prone to brittle fracture at low temperatures. Low-temperature steel branch outlets use A350 LF2/LF3 low-temperature forged blanks, undergo dedicated low-temperature heat treatment and V-notch impact testing, and have stable toughness under subzero operating conditions. They are mainly used in LNG, air separation, and extremely cold cryogenic pipeline systems.
For conventional -46°C low-temperature working conditions, choose LF2, which offers better cost-effectiveness; for -101°C ultra-low temperature, high-end air separation, and special gas working conditions, it is recommended to choose LF3. For specific selection, you can combine the medium temperature, pressure, and project specifications, and contact us for assistance in confirmation.
All batches of products come with V-notch low-temperature impact test reports, which can meet the acceptance requirements of international cryogenic projects. For other documents shipped with the goods, please contact us for confirmation.
We can provide bilingual Chinese-English labels and related inspection documents, and assist customers in handling document verification matters in overseas customs clearance and project acceptance. For the specific documents required, please contact us for confirmation according to the requirements of the destination country.
We support customization of all LF2/LF3 grades, non-standard pipe diameters, reducing size ratios, ultra-high pressure ratings, special thickened wall thicknesses, special lengths, branches at any angle, extended nipples, and special interfaces, etc. We can also do low-temperature heat treatment, sandblasting and rust removal, anti-rust and anti-corrosion coatings, and laser engraving of LOGOs. Please provide drawings or parameters, and we will assist in confirmation.
The MOQ for regular LF2 standard in-stock specifications is as low as 1 piece, and it can be packed and shipped within 24-48 hours after parameter verification and payment are completed. For LF3 and non-standard customized specifications, please contact us to confirm the minimum order quantity and delivery time.
Each piece is fully wrapped with thickened pearl cotton and waterproof and rust-proof vacuum film. Small specifications are packed in five-layer thickened export cartons, while medium and large specifications use fumigation-free solid wood pallets reinforced with steel straps, with bilingual Chinese and English labels affixed on the outside. The entire batch is wrapped with waterproof stretch film, suitable for sea, air, and land transportation.
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