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Socket Weld Cross

Forged socket weld equal cross in Stainless Steel 304/316, Duplex Steel and Super Duplex Steel — four equal outlets at 90 degrees, manufactured to ASME B16.11.

Socket Weld Cross – Forged Equal Cross SS 304 316 Duplex Super Duplex

Forged SW Equal Cross

The Socket Weld Equal Cross is a four-outlet forged pipe fitting with all outlets positioned at 90-degree angles in a single plane, forming a plus-sign geometry. Each of the four outlets accepts a pipe end into its socket, secured with a fillet weld, creating permanent high-pressure connections in four directions simultaneously.

The cross fitting is used where two intersecting pipelines must be connected at a single junction point. The equal cross configuration means all four outlets are the same nominal pipe size. Cunimet Alloy International manufactures SW crosses through closed-die forging, ensuring a structurally sound body at the highly stressed central intersection where all four outlets meet.

The forged central body of an equal cross is more compact and stronger than fabricated alternatives using branch connections, making it the preferred choice for high-pressure systems where minimising weld joints and maintaining structural integrity at the intersection is critical.

ASME B16.11 MSS SP-79 1/8" to 4" NPS 3000# • 6000# 4 Equal SW Outlets
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ASME Standard B16.11
4 Outlets Equal Bore, 90° Apart
1/8–4" Size Range NPS
3000# Pressure Class Also 6000#
3 Material Grades SS / Duplex / S.Duplex

SW Equal Cross — ASME B16.11 Dimensions

For an equal cross, all four outlets share the same Centre-to-End dimension “M” and identical socket bore and depth. All dimensions in millimetres.

NPS Pipe O.D. (mm) Centre-to-End All Outlets “M” (mm) Socket Bore (mm) Socket Depth (mm) No. of Outlets
Class 3000# Class 6000#
1/8"10.3161610.59.54
1/4"13.7161614.011.14
3/8"17.1202017.312.74
1/2"21.3252521.615.94
3/4"26.7293226.919.14
1"33.4384433.622.24
1-1/4"42.2485142.425.44
1-1/2"48.3575748.528.64
2"60.3647060.531.84
2-1/2"73.0768373.238.14
3"88.99510289.144.54
4"114.3114127114.550.84

Dimensions are nominal per ASME B16.11 latest edition. Subject to applicable manufacturing tolerances. All dimensions in millimetres.

Material Grades for SW Equal Crosses

Grade 01

Stainless Steel 304 / 316

Austenitic stainless steel for general corrosive process service. SS 316 provides superior chloride resistance. Both grades are widely used in chemical, food processing and pharmaceutical piping systems.

ASTM A182 F304 ASTM A182 F316 ASME B16.11
Grade 02

Duplex Steel

High-strength duplex alloy with dual-phase microstructure delivering excellent resistance to pitting, crevice corrosion and stress corrosion cracking in chloride-rich process environments.

ASTM A182 F51 UNS S31803 UNS S32205
Grade 03

Super Duplex Steel

Premium super duplex alloy with PREN greater than 40 for extreme corrosion resistance in seawater, desalination, offshore and chloride-rich chemical service environments.

ASTM A182 F53 UNS S32750 UNS S32760

Standards, Testing & Documentation

Applicable Standards

StandardDescription
ASME B16.11Primary dimensional standard for socket weld forged fittings
ASTM A182Forged alloy and stainless steel material specification
MSS SP-25Marking system for valves, fittings and flanges
MSS SP-55Visual inspection criteria for steel forgings
EN 102043.1 Mill Test Certificate standard; 3.2 on request
NACE MR0175Sour service compliance for Duplex / Super Duplex on request

Quality Tests Performed

TestMethod / Scope
Chemical AnalysisOES per ASTM A182 for each heat of material
Mechanical TestingTensile, yield, elongation and Charpy impact where specified
Hardness TestingBrinell or Vickers per ASTM A182 requirements
PMI100% Positive Material Identification by XRF on request
Dimensional Inspection100% per ASME B16.11 — all four sockets and cross body
Visual Inspection100% per MSS SP-55 including central body intersection

Where SW Equal Crosses Are Used

01

4-Way Flow Junctions

Connecting two intersecting pipelines at a single junction in process plants, replacing two separate tee fittings with one compact cross fitting, reducing overall piping complexity and weld count.

02

Hydraulic & Pneumatic Systems

Distribution manifolds in hydraulic power units and pneumatic control systems where four lines must connect at one junction point in a compact, leak-free arrangement.

03

Chemical Dosing Systems

Multi-point chemical injection manifolds in water treatment, desalination and chemical process plants where multiple process streams intersect at one dosing point.

04

Instrumentation Manifolds

Process instrumentation blocks and gauge manifolds in oil & gas facilities where four connections are required at a single measurement point on a piping circuit.

Other Socket Weld Fittings

SW Elbow 90°

Forged 90-degree SW elbow, ASME B16.11.

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SW Elbow 45°

Forged 45-degree SW elbow, ASME B16.11.

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SW Equal Tee

Forged socket weld equal tee, ASME B16.11.

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SW Full Coupling

Forged socket weld full coupling, ASME B16.11.

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Get a Quote for SW Equal Crosses

Specify size, pressure class, material grade and quantity. Our team responds within 24 hours with pricing and full technical documentation.

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