Name: Socket Weld Equal Tee
Brand: Cunimet Alloy International

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

Product Overview

Forged SW Equal Tee

The Socket Weld Equal Tee is a three-outlet forged fitting used to create a 90-degree branch connection from a piping run. All three outlets are of equal bore and accept standard pipe ends inserted into the sockets, each secured with a fillet weld. The equal tee is the standard fitting for splitting or combining equal-diameter flow streams.

Cunimet Alloy International manufactures SW equal tees through a closed-die forging process. The forged body provides a homogeneous grain structure through the entire fitting, including the branch crotch area, ensuring resistance to fatigue and pressure cycling. All three sockets are machined to ASME B16.11 bore tolerances and inspected dimensionally before dispatch.

ASME B16.11 MSS SP-79 1/8" to 4" NPS 3000# • 6000# 3 Equal SW Outlets

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ASME Standard B16.11

3 Outlets Equal Bore

1/8–4" Size Range NPS

3000# Pressure Class Also 6000#

3 Material Grades SS / Duplex / S.Duplex

Technical Dimensions

SW Equal Tee — ASME B16.11 Dimensions

For an equal tee, the Centre-to-End dimension “M” (run) and Centre-to-End dimension “C” (branch) are identical. All three sockets share the same bore diameter and depth. All dimensions in millimetres.

NPS	Pipe O.D. (mm)	Centre-to-End Run “M” (mm)		Centre-to-End Branch “C” (mm)		Socket Bore (mm)	Socket Depth (mm)
NPS	Pipe O.D. (mm)	3000#	6000#	3000#	6000#	Socket Bore (mm)	Socket Depth (mm)
1/8"	10.3	16	16	16	16	10.5	9.5
1/4"	13.7	16	16	16	16	14.0	11.1
3/8"	17.1	20	20	20	20	17.3	12.7
1/2"	21.3	25	25	25	25	21.6	15.9
3/4"	26.7	29	32	29	32	26.9	19.1
1"	33.4	38	44	38	44	33.6	22.2
1-1/4"	42.2	48	51	48	51	42.4	25.4
1-1/2"	48.3	57	57	57	57	48.5	28.6
2"	60.3	64	70	64	70	60.5	31.8
2-1/2"	73.0	76	83	76	83	73.2	38.1
3"	88.9	95	102	95	102	89.1	44.5
4"	114.3	114	127	114	127	114.5	50.8

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

Available Materials

Material Grades for SW Equal Tees

Grade 01

Stainless Steel 304 / 316

Austenitic stainless steel providing broad corrosion resistance for general process, chemical and food-grade applications. SS 316 is preferred where chloride-induced pitting or crevice corrosion is a concern.

ASTM A182 F304 ASTM A182 F316 ASME B16.11

Grade 02

Duplex Steel

High-strength austenitic-ferritic alloy with excellent resistance to stress corrosion cracking. Suitable for offshore, chemical plant and desalination service where chloride levels are elevated.

ASTM A182 F51 UNS S31803 UNS S32205

Grade 03

Super Duplex Steel

Premium corrosion-resistant alloy with PREN greater than 40, designed for the most demanding subsea, offshore and seawater handling applications where standard duplex grades are insufficient.

ASTM A182 F53 UNS S32750 UNS S32760

Quality & Compliance

Standards, Testing & Documentation

Applicable Standards

Standard	Description
ASME B16.11	Primary dimensional standard for SW forged fittings
ASTM A182	Material specification — alloy and stainless forged fittings
MSS SP-25	Standard marking for valves, fittings and flanges
MSS SP-55	Visual inspection acceptance criteria for forgings
EN 10204	3.1 MTC as standard; 3.2 with TPI on request
NACE MR0175	Sour service material requirements — Duplex / Super Duplex on request

Quality Tests Performed

Test	Method / Scope
Chemical Analysis	OES per ASTM A182 for each heat
Mechanical Testing	Tensile, yield, elongation, Charpy impact where specified
Hardness Testing	Brinell or Vickers per ASTM A182
PMI	100% by XRF on request
Dimensional Inspection	100% per ASME B16.11 — all three sockets and body
Visual Inspection	100% per MSS SP-55 including crotch area

Applications

Where SW Equal Tees Are Used

01

Process Flow Distribution

Splitting a single process stream into two equal branches for parallel equipment operation, or combining two streams into a common header in chemical and petrochemical plants.

02

Instrumentation Tapping

Creating a branch connection for pressure gauges, flow meters, temperature sensors and sampling points on process lines where permanent socket weld connections are specified.

03

Offshore Piping

Topside manifold piping, seawater distribution headers and firewater ring mains on offshore platforms where Duplex or Super Duplex Steel tees are mandatory for corrosion resistance.

04

Utility Systems

Steam distribution networks, compressed air headers, hydraulic oil piping and cooling water circuits in power stations, refineries and industrial plants.

Socket Weld Fittings Range

Socket Weld Equal Tee