Double Branch / Double Outlet Fitting - Butt-Weld Pipe Fitting
Double branch and double outlet fittings consolidate multiple pipe connections into a single fabricated component. Rather than welding several individual tees or outlets onto a header, a double-branch tee or dual-outlet manifold fitting provides two branch connections from a common run, reducing total weld count, simplifying fabrication and producing a stronger, more compact assembly.
All double branch fittings are manufactured with factory-prepared weld-end bevels to BS EN 10253 or ASME B16.25, ready for full-penetration butt welding on site. Full material traceability is maintained from parent plate or pipe through to the finished fitting, with material test certificates and heat numbers provided with every delivery.
Standards & Materials
Double branch and double outlet fittings are manufactured to BS EN 10253-2 and ASME B16.9 in carbon steel ASTM A234 WPB and stainless steel grades 304/304L and 316/316L. Bespoke outlet configurations, branch angles and material grades are available to order for specialist applications.
| Attribute | Specification |
|---|---|
| Manufacturing Standard | BS EN 10253-2 / ASME B16.9 |
| Carbon Steel | ASTM A234 WPB, A420 WPL6 (low-temp service) |
| Stainless Steel | ASTM A403 WP304/304L, WP316/316L |
| Special Grades | Duplex & Super Duplex (UNS S31803 / S32205 / S32750), Alloy 20, Inconel 625 / 825, Monel 400, Hastelloy C-276 - available on request |
| Fabrication | Full-penetration butt-welded from plate or pipe to client specification |
| Weld-End Preparation | Bevelled to BS EN 10253 / ASME B16.25 for all outlets |
| Test Pressure | Hydrostatic testing per BS EN 10253-2 requirements |
| Outlet Configurations | Equal, reducing, angled and custom multi-port arrangements |
Dimensions & Sizes
Double branch fittings are available from 1/2" (DN15) to 24" (DN600) in schedules 10, 40 and 80. The table below summarises the principal configuration types with their typical size ranges and outlet arrangements.
| Configuration | Size Range | Typical Outlets |
|---|---|---|
| Double-Branch Tee | 1/2" (DN15) to 12" (DN300) | Two equal 90° branches from a single run |
| Twin-Outlet Tee | 1" (DN25) to 10" (DN250) | Two reduced-diameter outlets at 90° to the run |
| Dual-Run Manifold | 2" (DN50) to 24" (DN600) | Two run outlets with branch entry points on a common header |
| Equal Double Outlet | 1/2" (DN15) to 8" (DN200) | Two identical branch outlets from a common header section |
| Custom Multi-Port | 1" (DN25) to 24" (DN600) | Client-specified branch angles, sizes and positions |
Performance & Benefits
By consolidating multiple branch connections into a single fitting, double branch and double outlet components significantly reduce the total number of welds required on a spool piece. This lowers fabrication time, reduces the number of potential leak paths and produces a cleaner, more structurally sound assembly. Reduced weld count also means fewer NDT inspections, lowering overall quality-assurance costs on complex manifold projects.
Typical Applications
Widely specified across the UK for instrument manifolds, header spool pieces, distribution systems and process skids where multiple branches must be served from a single point. Commonly found in oil and gas metering stations, power plant auxiliary systems, chemical dosing manifolds and water treatment distribution headers.
Quality Assurance & Traceability
Every fitting is manufactured to BS EN 10253-2 and ASME B16.9 and supplied with full material traceability and EN 10204 Type 3.1 test certificates. Heat numbers are recorded throughout production to support inspection, QA and UK project-compliance requirements.
Supply & Delivery
Stocked at our Sheffield, UK facility and delivered nationwide across England, Scotland and Wales. We offer fast dispatch from stock with tracked UK delivery to site, and next-day options for common sizes.
-
Which sizes and schedules are available?
Available from 1/2" (DN15) to 24" (DN600) in schedule 10, 40 and 80, in both metric and imperial sizes to suit UK installations.
-
Can you provide material certificates?
Yes. Material test certificates and full traceability documentation are available with every order, to project and quality-management requirements.
-
Can double branch fittings be made to custom outlet configurations?
Yes. Bespoke double branch fittings with non-standard outlet sizes, branch angles and positions can be fabricated to your GA drawings or performance specification. Our engineering team can advise on design optimisation and manufacturability during the quotation stage.
-
Do you deliver across the UK?
We deliver nationwide throughout England, Scotland and Wales, with fast dispatch from stock and tracked deliveries to site.