Ductile Iron Reducing Cross – Threaded 4-Way Cast Fitting

By Nico Yin · Qingdao Zhaoyuqi Machinery Co., Ltd.

Overview

A reducing cross is a four-way fitting in which the two run outlets lie on one axis and the two branch outlets on the perpendicular axis, with one or both axes reduced to smaller diameters. Where a tee offers a single branch, the cross provides two 90° branch take-offs in one body — a compact way to split flow into four directions while stepping sizes down at the same time. Cast as a single piece, it replaces a fabrication of two tees or a tee plus couplings, removing three potential leak joints from the system.

Our reducing crosses are produced by resin sand casting in ductile iron to ASTM A536 (65-45-12 / 80-55-06) and to EN-GJS-400-15 / -450-10 / -500-7, then fully machined. Typical threaded combinations run from 2"×1" up to 12"×8", covering water distribution, HVAC risers, compressed air headers, irrigation manifolds and fire protection interconnections. Ductile iron's nodular graphite structure gives roughly twice the tensile strength of grey cast iron, which matters at the four-way junction where casting sections converge. All outlets are threaded to ASME B1.20.1 NPT or ISO 228 BSP and gauge-checked; bare, hot-dip galvanized and epoxy finishes are applied in-house for indoor, outdoor and buried service respectively.

Specifications

Customization & Sampling

Pattern-controlled production means the four outlets need not be symmetric: we regularly cast crosses with two different branch sizes, mixed NPT/BSP threads, or bossed branch openings. Dimensioned samples with material and thread-gauge reports are available before batch release; sampling is typically 15–25 days depending on pattern work.

Quality Inspection & Packaging

Every batch is checked for melt chemistry, tensile and hardness per ASTM A536, thread gauging on all four outlets, wall thickness at the central junction, and ISO 8062 dimensional audit. Quality management conforms to ISO 9001:2015 requirements. Crosses are packed in cartons or woven bags and palletized; heavier sizes ship in steel-strapped plywood cases with threaded protectors.

FAQ

Q1: When is a cross preferred over two tees?

When flow must divide into four directions at one point, a single cast cross is shorter, aligned by the pattern rather than by the installer, and eliminates the extra joints of a tee-plus-tee fabrication.

Q2: Can the two branch outlets be different sizes?

Yes. Branch outlets are pattern-controlled, so unequal branches such as a 4"×4"×2"×1½" combination can be produced to drawing — see also our Reducing Cross II page for dedicated unequal-branch configurations.

Q3: How is pressure rating established for a four-way body?

The central junction concentrates stress, so wall thickness there is verified per batch alongside ASTM A536 tensile coupons; rating is stated as typical and confirmed against the system design in the order stage.

Related Products

• Reducing Tee

• Reducing Cross II

• 90° Reducing Elbow

• Concentric Reducer

• Reducing Coupling

Get a Quote

Send your four-outlet size schedule — quotes within 24 hours, drawings reviewed by our casting engineers. WhatsApp: +86 185 6156 7088. Factory-direct ductile iron casting with coating and export packing in-house.

Need a formal quotation? Send your Ductile Iron Reducing Cross drawing, quantity and target price through our quotation request form — it goes straight to the foundry inbox, and we reply with a priced offer, material certificate draft and production lead time within one business day.