Carbon Steel Sockolet Manufacturer & Supplier | ASTM A105 / ASME B16.11, MSS SP-97

Carbon Steel Sockolet Manufacturer and Supplier in India

Carbon Steel Sockolets are branch outlet fittings that are forged to join a smaller branch pipe to a main pipe with a socket-weld connection. Two typical grades of carbon steel, ASTM A105 and ASTM A105N are known for being of good strength and durability. These fittings come in a variety of sizes and finishes and can be provided in different configurations, including socket-weld, threaded, and butt-weld. The small branch connections are typically made with Carbon Steel Sockolets ranging from 1/8" (DN6) to 4" (DN100). Solitaire Overseas produces and exports Carbon Steel Sockolets that can be customized in sizes, quality inspection, material traceability and delivery for any and all piping projects, both domestically and internationally.

Technical Data

Specifications Chemical Composition Mechanical Properties Size Chart Dimensions Chart Class Rating

Specifications of Carbon Steel Sockolet

Specification Parameter	Standard Technical Details
Product Name	Carbon Steel Sockolet (Socket Weld Branch Outlet Fitting)
Primary Material	Forged Carbon Steel ASTM A105 / A105N (A105 is the standard forged carbon steel grade; A105N represents the same material supplied in normalized condition where required by project specification)
Applicable Standards	• MSS SP-97: Integrally Reinforced Forged Branch Outlet Fittings • ASME B16.11: Forged Fittings, Socket-Welding and Threaded
Outlet Size Range	1/8″ to 2″ NB (Standard); up to 4″ for custom / specialized runs
Run / Header Size Range	1/2″ to 36″ NB (and larger upon request)
Pressure Class / Ratings	• Class 3000: Corresponds to Sch 80 / XS branch pipe • Class 6000: Corresponds to Sch 160 branch pipe • Class 9000: Corresponds to XXS branch pipe
End Connection Types	• Outlet End: Socket Weld (SW) • Run End: Contoured Beveled Weld-On (for welding onto header pipe)
Manufacturing Process	Solid forged, then machined
Surface Treatments & Finish	Galvanized (Hot-Dip / Electro), Black Anti-Rust Oil, Pickled, Yellow Varnish, Zinc Plated
Typical Service Applications	Water, Air, Steam, Crude Oil, Natural Gas, and Process Piping (Final suitability is determined by operating pressure, temperature design conditions, and material compatibility)
Quality & Inspection Criteria	Visual Inspection, Dimensional Checks, Hardness Testing, Tensile Testing, Impact Testing, Positive Material Identification (PMI)
Documentation & Certification	Raw Material Test Reports (RMTR), Mill Test Certificates (MTC per EN 10204 3.1 / 3.2), Heat Treatment Charts, NACE MR0175 / MR0103 compliance

Chemical Compositions of Carbon Steel Sockolet

Element	Composition (%)
Carbon (C)	0.35 max
Silicon (Si)	0.10–0.35
Manganese (Mn)	0.60–1.05
Phosphorus (P)	0.035 max
Sulfur (S)	0.040 max
Chromium (Cr)	0.30 max
Nickel (Ni)	0.40 max
Molybdenum (Mo)	0.12 max
Copper (Cu)	0.40 max
Vanadium (V)	0.08 max

ASTM A105 Carbon Steel Sockolet Mechanical Properties

Property	Requirement
Tensile Strength (Min.)	70,000 psi [485 MPa]
Yield Strength (Min.)	36,000 psi [250 MPa]
Reduction of Area (Min.)	30%
Hardness (Max.)	187 HB

ASME SA105 Carbon Steel Sockolet Size Chart

Nominal Size (NPS)	Dimension A (in)	Dimension B (in)	Dimension C (in)	Dimension D (in)	Approx. Weight (lbs)
1/2″	3/4″	1-3/8″	15/16″	5/8″	0.15
3/4″	7/8″	1-5/8″	1-3/16″	13/16″	0.25
1″	1-1/06″	2″	1-7/16″	1-1/32″	0.40
1-1/4″	1-1/4″	2-3/8″	1-3/4″	1-3/8″	0.70
1-1/2″	1-5/16″	2-7/8″	2″	1-5/8″	0.80
2″	1-1/2″	3-1/2″	2-9/16″	2-1/06″	1.50
2-1/2″	1-5/8″	4-1/8″	3″	2-7/16″	2.25
3″	1-3/4″	4-13/16″	3-11/16″	3-1/06″	3.75
3-1/2″	2″	5-3/8″	3-7/8″	3-9/16″	5.00
4″	2″	6″	4-3/4″	4″	6.75

ASTM A105 Carbon Steel Sockolet Dimensions Chart

Run Pipe Size (NPS)	Run Pipe Schedule	2″	3″	4″	6″	8″	10″	12″	14″	16″	18″	20″	24″
2″	STD / Sch 40	—	—	—	—	—	—	—	—	—	—	—	—
2″	XS / Sch 80	70	—	—	—	—	—	—	—	—	—	—	—
2″	XXS / Sch 160	87	—	—	—	—	—	—	—	—	—	—	—
3″	STD / Sch 40	84	91	—	—	—	—	—	—	—	—	—	—
3″	XS / Sch 80	84	91	—	—	—	—	—	—	—	—	—	—
3″	XXS / Sch 160	101	111	119	—	—	—	—	—	—	—	—	—
4″	STD / Sch 40	97	103	111	—	—	—	—	—	—	—	—	—
4″	XS / Sch 80	97	103	111	—	—	—	—	—	—	—	—	—
4″	XXS / Sch 160	114	132	144	—	—	—	—	—	—	—	—	—
6″	STD / Sch 40	124	130	138	148	—	—	—	—	—	—	—	—
6″	XS / Sch 80	124	130	138	165	—	—	—	—	—	—	—	—
6″	XXS / Sch 160	141	159	171	192	—	—	—	—	—	—	—	—
8″	STD / Sch 40	149	156	164	176	183	—	—	—	—	—	—	—
8″	XS / Sch 80	149	156	164	191	197	—	—	—	—	—	—	—
8″	XXS / Sch 160	167	184	197	218	224	—	—	—	—	—	—	—
10″	STD / Sch 40	176	183	191	205	210	218	—	—	—	—	—	—
10″	XS / Sch 80	176	183	191	218	238	235	—	—	—	—	—	—
10″	XXS / Sch 160	194	211	224	245	251	265	—	—	—	—	—	—
12″	STD	202	208	216	228	255	245	251	—	—	—	—	—
12″	XS	202	208	216	243	264	267	265	—	—	—	—	—
12″	XXS / Sch 160	219	237	249	270	276	291	324	—	—	—	—	—
14″	STD	218	224	232	245	251	259	267	270	—	—	—	—
14″	XS	218	224	231	239	279	270	278	286	—	—	—	—
16″	STD	243	249	257	270	276	284	292	295	300	—	—	—
16″	XS	243	249	257	284	305	293	303	306	319	—	—	—
18″	STD	268	275	283	295	302	310	318	321	325	335	—	—
18″	XS	268	275	283	310	330	321	329	332	338	352	—	—
20″	STD	294	300	308	321	327	335	343	346	351	356	376	—
20″	XS	294	300	308	335	356	346	354	557	364	370	386	—
24″	STD	345	351	359	372	378	386	394	397	402	406	411	446
24″	XS	345	351	359	386	406	397	405	408	414	421	429	449

Class Rating & Schedule Matching Chart of Carbon Steel Sockolet

CLASS	MATCHING BRANCH PIPE	TYPICAL USE
Class 3000	Schedule 80 / XS	General process branch connections
Class 6000	Schedule 160	Higher pressure and instrument service
Class 9000	XXS	High pressure and severe cyclic duty

Applications and Industrial Uses of Carbon Steel Sockolet

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Oil & Gas Industry
Petrochemical Industry
Chemical Processing Industry
Power Generation Industry
Refinery Industry
Fertilizer Industry
Water Treatment Industry
Pharmaceutical Industry

Frequently Asked Questions

What is a Carbon Steel Sockolet?

A Carbon Steel Sockolet is a forged branch outlet fitting used to connect a smaller branch pipe to a main pipe through a socket-weld connection.

What is a Sockolet used for?

A Sockolet is used to make small branch connections in piping systems where a socket-weld connection is required.

What is the difference between a Sockolet and a Weldolet?

A Sockolet uses a socket-weld connection, while a Weldolet uses a butt-weld connection. Sockolets are generally used for smaller branch pipes.

What are the pressure classes of Sockolet fittings?

Sockolets are commonly available in Class 3000, Class 6000, and Class 9000, depending on the material, size, and application.

What is ASTM A105 Sockolet?

An ASTM A105 Sockolet is a forged carbon steel branch outlet fitting manufactured from ASTM A105 material for pressure piping applications.

Can Sockolets be used for high-pressure applications?

Yes. Sockolets can be used for high-pressure piping when the appropriate pressure class, material grade, size, and design requirements are selected.

How do I choose between Class 3000, 6000 and 9000?

Choose the fitting class based on the branch pipe schedule: Class 3000 for Schedule 80/Extra Strong, Class 6000 for Schedule 160, and Class 9000 for XXS. For Schedule 40 or lighter, consider a threaded or butt-weld connection instead.