ASME B16.9 | Reducing Cross | Unequal Buttweld Cross | Pipe Fittings | NPS 1/2″–48″ | Carbon Steel, Stainless Steel, Duplex, Alloy & Nickel Alloys
Elite Reducing Crosses, also known as Unequal Crosses, are butt-welding pipe fittings with a main run and reduced outlet connections. They provide a four-way piping arrangement where the branch/outlet sizes are smaller than the main run.
ASME B16.9 specifically includes straight and reducing crosses, with reducing-cross dimensions based on run and outlet sizes.
| Parameter | Specification | |
|---|---|---|
| Manufacturer | Elite | |
| Product | Reducing / Unequal Buttweld Cross | |
| Primary Standard | ASME B16.9 | |
| Type | Reducing Cross / Unequal Cross | |
| Size Range | NPS 1/2"–48" | |
| Configuration | Run × Run × Outlet × Outlet | |
| Connection | Butt Weld | |
| Construction | Seamless / Welded / Fabricated* | |
| Wall Thickness | Schedule / nominal wall thickness as specified | |
| End Preparation | ASME B16.25 | |
| Material Standards | ASTM / ASME | |
| Heat Treatment | Material and specification dependent | |
| Surface Finish | Machined / Pickled / Blasted / Polished / Project Specified | |
| Inspection | Visual, dimensional, PMI and NDE as specified | |
| Marking | Size, material, schedule, standard and heat/lot identification | |
| Documentation | MTC, EN 10204 3.1/3.2 and project documentation | |
| *Fabricated and special configurations are subject to applicable material and project requirements. | ||
| Type | Description |
|---|---|
| Standard Reducing Cross | Main run with reduced outlet connections |
| Symmetrical Reducing Cross | Both reduced outlets are the same size |
| Unequal Cross | Multiple connection sizes within one fitting |
| Seamless Reducing Cross | Seamless wrought construction |
| Welded Reducing Cross | Welded construction |
| Fabricated Reducing Cross | Custom large-size or special configuration |
| Heavy-Wall Reducing Cross | Heavy-wall process and high-pressure applications |
Note: ASME B16.9 is the primary dimensional standard for reducing crosses. ASME B16.28 should not be listed as a current primary standard; relevant fitting requirements have been incorporated into B16.9.
Carbon Steel
ASTM A234 WPB, WPC and applicable WPHY grades.
Low Temperature Carbon Steel
ASTM A420 WPL3, WPL6 and applicable grades.
Stainless Steel
ASTM A403 WP304/304L, WP316/316L, WP321/321H, WP347/347H and applicable grades.
Duplex & Super Duplex
ASTM A815 S31803, S32205, S32750 and S32760.
Alloy Steel
ASTM A234 WP1, WP5, WP9, WP11, WP12, WP22 and WP91.
Nickel Alloys
ASTM B366 and applicable grades including Nickel 200/201, Monel 400/K500, Inconel 600/601/625/800/825, Hastelloy C276 and Alloy 20.
Copper-Nickel Alloys
Applicable grades including UNS C70600 and C71500.
Titanium
Applicable titanium grades manufactured to the relevant ASTM specification.
Material selection is based on pressure, temperature, process fluid, corrosion conditions, mechanical requirements and project specifications.
Reducing / Unequal Cross
Main run is larger than the outlet connections.
Symmetrical Reducing Cross
Both outlet connections are the same reduced size.
Multiple-Size Reducing Cross
Run and outlet connections are supplied in different nominal sizes according to the piping arrangement.
Seamless Reducing Cross
Seamless construction for applicable sizes, materials and wall thicknesses.
Welded Reducing Cross
Welded construction for applicable materials and sizes.
Fabricated Reducing Cross
Custom-fabricated construction for large diameters, heavy-wall requirements and special configurations.
Elite Reducing Crosses are manufactured using appropriate forming, extrusion, heat-treatment, machining and welding processes according to the material, size and project requirements.
Quality control may include:
Elite can manufacture Reducing / Unequal Crosses according to customer drawings and project specifications, including:
Available documentation can include:
Elite Reducing / Unequal Crosses are used in:
Typical applications include flow distribution, process piping, pipeline branches, utility systems and four-way piping arrangements where different pipe sizes are required.
Please specify:
| Item | Required Information |
| Product | Reducing / Unequal Cross |
| Size | Run × Run × Outlet × Outlet |
| Material & Grade | ASTM / ASME grade |
| Wall Thickness | Schedule / nominal wall |
| Construction | Seamless / Welded / Fabricated |
| Standard | ASME B16.9 / Project Specification |
| End Preparation | ASME B16.25 or project specified |
| Surface Finish | Standard / Pickled / Blasted / Polished |
| Inspection | PMI / UT / RT / MT / PT / Hardness as required |
| Documentation | EN 10204 3.1 / 3.2 and project documents |
| Special Requirements | Drawing, NACE, testing or other project requirements |
Typical Order Example:
8″ × 8″ × 6″ × 6″ Reducing Cross, ASME B16.9, ASTM A234 WPB, SCH 40, Seamless, ASME B16.25 Bevel Ends, EN 10204 3.1, PMI.
