Socket Weld Tee Archives | Quality Manufacturer of Industrial Pipe Fittings

Forged Socket Weld Tee

zhao77jie — Tue, 26 Aug 2025 06:00:00 +0000

What is a Socket Weld Tee?

A Socket Weld Tee, also known as a socket weld tee fitting, is a high-pressure pipe connection component manufactured using round steel or steel ingots through die-forging and machining on a lathe. It is used in piping systems to achieve a “one-pipe-to-two-branches” configuration. Its core structure includes three ports: one main pipe port and two branch pipe ports, all of which utilize socket weld connections. Unlike ordinary threaded tees or butt-welded tees, the ports of a Socket Weld Tee are designed in a “socket” form, allowing pipes to be directly inserted into the sockets and then secured via welding to form a tight, sealed connection. It is primarily used in high-pressure precision fields such as petrochemicals, power generation, aerospace, and defense industries. Its manufacturing processes include hot pressing, radial compression, and branch pipe stretching, differing from the metal compensation method used in hydraulic forming processes.

Forged Socket Weld Fittings Tees are categorized into two types based on structure: equal tee and reducing tee. Sizes range from DN6 to DN100, with common sizes being DN15 to DN50. Materials include carbon steel, stainless steel, and alloy steel. Pressure ratings include 3000LB, 6000LB, and SCH80. The product complies with the American Standard ASME B16.11. Contact us

Forged Fitting Socket Weld Tee Specification

Standard	ASME 16.11, MSS SP-79, MSS SP-95, 83, 95, 97, BS 3799
Size :	1/8″ NB TO 4″ NB(DN6 – DN100)
Class :	3000LBS, 6000LBS， 9000LBS
Type :	Socket Weld Fitting Tee, Socket Weld Equal Tee, Socket Weld Unequal Tee

Advantages of Socket Weld Tees: Why Are They thePreferred Choice for Industrial Piping?

1. Strong Adaptability to High-Pressure Conditions

The socket weld tee’s socket weld structure can withstand higher working pressures (typically compatible with pressure ratings from Class 150 to Class 2500), far exceeding the pressure limits of threaded tees. Socket weld connections provide excellent structural strength, enabling them to withstand high internal and external pressures, and are commonly used in applications with pressure ratings of Class 3000, 6000, and 9000.

2. Corrosion Resistance

High-quality Socket Weld Tees are typically manufactured from materials such as stainless steel (e.g., 304, 316L), alloy steel, or specialty plastics. Among these, Socket Weld Tees made from 316L stainless steel not only resist corrosion from ordinary water and oil media but also significantly extend the service life of the fittings, reducing long-term maintenance costs.

3. Easy and Efficient Installation

Compared to the complex process of butt-welded tees, which require precise alignment of pipes and multiple welds, the installation of Socket Weld Tees is much simpler: simply insert the pipe into the socket and secure it with a single weld.

4. Wide Range of Applicable Media

Whether it is gas, liquid, or certain powder media, Socket Weld Tees can be reliably adapted.

5. High strength and leak-proof performance:

By welding the pipes and tees together, a robust and completely leak-proof connection is formed. This is critical for systems transporting high-pressure, high-temperature, or hazardous fluids.

6. Smooth inner walls: Although there are weld seams on the exterior, since the pipes are inserted into the socket, the weld seams do not protrude into the pipe interior, ensuring smooth fluid flow within the pipe and minimizing turbulence and pressure drop.

ASME B16.11 Socket Weld Tee Dimensions

DN	NPS	B	C						A			G
DN	NPS	B	3000		6000		9000		3000	6000	9000	3000	6000	9000
6	1/8	10.9	3.18	3.18	3.96	3.43	–	–	11.0	11.0	–	2.41	3.15	–
8	1/4	14.3	3.78	3.30	4.60	4.01	–	–	11.0	13.5	–	3.02	3.68	–
10	3/8	17.7	4.01	3.5	5.03	4.37	–	–	13.5	15.5	–	3.20	4.01	–
15	1/2	21.9	4.67	4.09	5.97	5.18	9.53	8.18	15.5	19	25.5	3.73	4.78	7.47
20	3/4	27.3	4.09	4.27	6.96	6.04	9.78	8.56	19	25.5	28.5	3.91	5.56	7.82
25	1	34.0	5.69	4.98	7.92	6.93	11.38	9.96	22.5	27.0	32.0	4.55	6.35	9.09
32	11/4	42.8	6.07	5.28	7.92	6.93	12.14	10.62	27.0	32.0	35.0	4.85	6.35	9.70
40	11/2	48.9	6.35	5.54	8.92	7.80	12.7	11.12	32.0	38.0	38.0	5.08	7.14	10.15
50	2	61.2	6.93	6.04	10.92	9.50	13.84	12.12	38.0	41.0	54.0	5.54	8.74	11.07
65	21/2	73.9	8.76	7.62	–	–	–	–	41.0	–	–	7.01	–	–
80	3	89.9	9.52	8.30	–	–	–	–	57.0	–	–	7.62	–	–
100	4	115.5	10.69	9.35	–	–	–	–	66.5	–	–	8.56	–	–

1) The even thickness around the socket bore shall not be less than the average value, the thickness at partial areas can be the min. one.
2) Considering the tolerance of outside diameter of pipe, the diameters of some socket bore can be a little larger than the ones specified in B16.11.
3) When the sizes of the connecting pipes are not conformed to the ones specified in this catalog, the sizes of the connecting pipes shall be provided in the purchase specification.
4) When the fittings are reducing,the structure sizes shall be same as the ones of the straight fittings and B J D shall be machined per the according reducing ends.
5) Fittings can also be manufactured as the mixed connectings of Socket Weld and Threaded.

ASME B16.11 Forged Tee Weight Chart in KG

DN	NPS	3000	6000	9000
6	1/8	0.13	0.22	–
8	1/4	0.14	0.25	–
10	3/8	0.16	0.45	–
15	1/2	0.35	0.55	1.15
20	3/4	0.48	0.90	1.80
25	1	0.66	1.46	2.25
32	1-1/4	1.00	1.90	3.95
40	1-1//2	1.40	2.80	4.87
50	2	2.00	3.70	8.89
65	2-1/2	4.10	–	–
80	3	5.55	–	–
100	4	15.6	–	–

Tolerances for Socket Weld Fittings

Nominal Size		All Fittings		Tees	Reducer Inserts
Nominal Size		Socket Bore Dia.	Bore Dia. of Fittings	Center to Bottom of Socket	Laying Length	Shank Dia.	Length
DN	NPS	B	D	A H	A	SD	SL
6~8	1/8~1/4	+0.4 0	+1.5 0	± 1.0	+1.5 0	± 0.25	0 -1.5
10~20	3/8~3/4	+0.4 0	+1.5 0	± 1.5	+1.5 0	± 0.25	0 -1.5
25~40	1~11/2	+0.4 0	+1.5 0	± 2.0	+2.0 0	± 0.25	0 -2.0
50	2	+0.5 0	+1.5 0	± 2.0	+2.0 0	± 0.5	0 -2.0
65~80	21/2~3	+0.5 0	+3.0 0	± 2.5	+2.5 0	± 0.5	0 -2.5
100	4	+0.5 0	+3.0 0	± 2.5	+2.5 0	± 0.7	0 -2.5

Material & Grades of Forged Fittings Tees

Carbon Steel :
ASTM A105 / A105N,ASTM A350 LF2 / LF3, A694 F42 / 46 / 52 / 56 / 65 / 70

Alloy Steel :
ASTM / ASME A/SA 182 & A 387 F1, F5, F9, F11, F12, F22, F91

Stainless Steel :
ASTM A 182, A 240 F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H, 904L

Duplex & Super Duplex Steel :
ASTM / ASME A/SA 182 F 44, F 45, F51, F 53, F 55, F 60, F 61

Copper Alloy Steel :

ASTM SB 61 , SB62 , SB151 , SB152 UNS No. C 70600 (Cu-Ni 90/10), C 71500 (Cu-Ni 70/30), UNS No. C 10100, 10200, 10300, 10800, 12000, 12200

Nickel Alloy :
ASTM SB564, SB160, SB472, SB162 Nickel 200 (UNS No. N02200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No.N10276), Alloy 20 (UNS No. N08020)

Types of Socket Weld Tee – Comparison

Feature	Equal Tee (Straight Tee)	Reducing Tee (Unequal Tee)
Definition	All three outlets have the same diameter.	Branch outlet has a smaller diameter than the main pipe.
Flow Distribution	Divides or combines flow into three equal-sized directions.	Divides or combines flow where branch requires different pipe size.
Application	Used when all connecting pipes are of the same size.	Used when the branch connection requires a different size for flow reduction or transition.
Design	Simple, symmetrical shape.	Asymmetrical, with a smaller branch end.
Common Usage	General piping systems, balanced flow distribution.	Piping systems requiring size transition, fluid control, or reduced flow rate.

Application Areas

Oil and Gas Transportation

Chemical and Petrochemical Plants

Power and Boiler Systems

Shipbuilding and Marine Engineering

High-Pressure Hydraulic and Steam Systems

Conclusion

The Socket Weld Tee, with its advantages of high-pressure resistance, corrosion resistance, easy installation, and wide applicability, has become an indispensable key component in industrial piping systems. Whether in high-pressure, high-temperature industries such as petrochemicals and power generation, or in fields with stringent hygiene and corrosion resistance requirements such as food and pharmaceuticals and water treatment, selecting the appropriate Socket Weld Tee can significantly enhance the stability and service life of the piping system.

When purchasing Socket Weld Tees, it is recommended to prioritize products manufactured by reputable manufacturers that comply with international/domestic standards, and to select the appropriate type based on the characteristics of the medium and operating conditions. During installation, strict adherence to specifications is essential to ensure the quality of the connections. In the future, with advancements in material technology and intelligent systems, Socket Weld Tees will play an increasingly important role in more industrial applications, providing stronger support for the efficient and safe operation of pipeline systems.

The post Forged Socket Weld Tee appeared first on Quality Manufacturer of Industrial Pipe Fittings.

Types of Stainless Steel Equal Tee

zhao77jie — Tue, 25 Jun 2024 08:49:30 +0000

Stainless steel equal tee is commonly used pipe fittings in pipeline systems. They are mainly used at the connections of pipeline systems and play a role in changing direction, converging, or diverting flow. Stainless steel tees are an important type of pipeline connector, and their excellent performance and wide range of applications make them an indispensable part of pipeline systems.

According to the shape, stainless steel tees can be divided into equal tee and reducing tee.

Stainless Steel Equal Tee

Stainless Steel Reducing Tee

Stainless steel Equal tee with the same outer diameter for main and branch pipes. Reducing tee refer different diameters between the main and branch pipes.In this article,we will introduce stainless steel equal tee.

How to Classify Stainless Steel Equal tee

Stainless steel equal tee can be classified according to different connection methods. Such as butt weld tee, threaded tee and socket tee.

Stainless Steel Butt Weld Tee

Stainless steel butt weld tees are pipe fittings that connect the main and branch pipes through welding, thereby achieving branch connections in the pipeline system. Due to its good sealing performance at the welded joints and low risk of leakage, it is widely used in various pipeline systems.

Shape Type	Equal Tee and Reducing Tee
Size Range	1/2″ – 80″ / DN15 – 2000
Thickness Schedule	SCH 10 – SCH 160, XXS
Standard	GB/T12459, GB/T13401, HG/T21635/21631, SH3408/3409， ANSI / ASME B16.9, MSS SP 43, JIS B2311/2312/2313, DIN2605/2615/2616/2617, EN10253
Stainless Steel	ASTM A403 WP304/304L/304H, 316/316L, 310S, 317,347, 904L, A815 S32205, S31803, 32750, 32760

Dimension of ASME B16.9 Butt Weld Tee

Nominal Size		Outside Diameter at Bevel	Center to End
DN	NPS	OD1 X OD2	C	M
15	1/2	21.3	25	25
20	3/4	26.7	29	29
25	1	33.4	38	38
32	1-1/4	42.2	48	48
40	1-1/2	48.3	57	57
50	2	60.3	64	64
65	2-1/2	73.0	76	76
80	3	88.9	86	86
90	3-1/2	101.6	95	95
100	4	114.3	105	105
125	5	141.3	124	124
150	6	168.3	143	143
200	8	219.1	178	178
250	10	273.0	216	216
300	12	323.8	254	254
350	14	355.6	279	279
400	16	406.4	305	305
450	18	457.0	343	343
500	20	508.0	381	381
550	22	559.0	419	419
600	24	610.0	432	432
650	26	660.0	495	495
700	28	711.0	521	521
750	30	762.0	559	559
800	32	813.0	597	597
850	34	864.0	635	635
900	36	914.0	673	673
950	38	965.0	711	711
1000	40	1016.0	749	749
1050	42	1067.0	762	711
1100	44	1118.0	813	762
1150	46	1168.0	851	800
1200	48	1219.0	889	838
1300	52	1321.0	965	914
1400	56	1422.0	1041	965
1600	64	1626.0	1194	1092
1700	68	1727.0	1270	1168
1800	72	1829.0	1320	1245
1900	76	1930.0	1422	1320
2000	80	2032.0	1499	1397

Stainless Steel Threaded Tee

Stainless steel threaded tee is a pipeline accessory made of stainless steel material forged and connected through threaded connection. It’s characteristics include strong corrosion resistance, easy installation, low maintenance cost. They are suitability for small diameter high-pressure pipeline systems below 4 inches.

Type	Equal Tee and Reducing Tee
Size	1/8″, 1/4″, 3/8″, 1/2″, 3/4″, 1″, 1 1/4″, 1 1/2″, 2″, 2 1/2″, 3″, 4″
Class	Class 2000, 3000, 6000
Grade	ASTM A182 F304/F304L/F316/F316L/F321/F347

Dimension of ASME B16.11 Threaded Tee

DN	NPS	A			H
DN	NPS	2000LB	3000LB	6000LB	2000LB	3000LB	6000LB
6	1/8	21	21	25	22	22	25
8	1/4	21	25	28	22	25	33
10	3/8	25	28	33	25	33	38
15	1/2	28	33	38	33	38	46
20	3/4	33	38	44	38	46	56
25	1	38	44	51	46	56	62
32	1-1/4	44	51	60	56	62	75
40	1-1/2	51	60	64	62	75	84
50	2	60	64	83	75	84	102
65	2-1/2	76	83	95	92	102	121
80	3	86	95	106	109	121	146
100	4	106	114	114	146	152	152

Stainless Steel Socket Weld Tee

The socket connection method makes the installation process of stainless steel socket tees relatively simple. After inserting the connecting fittings into each end of the tee, they can be fixed by welding or fusion. Without the need for complex processes and tools, improving installation efficiency.

Shape	Straight and Reducing Fittings
Size Range	1/8″- 4″ / DN6 – DN100
Pressure Rating	Class 3000, 6000, 9000.
Stainless Steel	ASTM A182 F304 / 304L / 304H, 316 / 316L, 321, 310S, 317, 347, 904L
Duplex Stainless Steel	ASTM A182 F51, F53, F44

Dimension of ASME B16.11 Socket Weld Tee

DN	NPS	B	C						A			G
DN	NPS	B	3000		6000		9000		3000	6000	9000	3000	6000	9000
6	1/8	10.9	3.18	3.18	3.96	3.43	–	–	11.0	11.0	–	2.41	3.15	–
8	1/4	14.3	3.78	3.30	4.60	4.01	–	–	11.0	13.5	–	3.02	3.68	–
10	3/8	17.7	4.01	3.5	5.03	4.37	–	–	13.5	15.5	–	3.20	4.01	–
15	1/2	21.9	4.67	4.09	5.97	5.18	9.53	8.18	15.5	19	25.5	3.73	4.78	7.47
20	3/4	27.3	4.09	4.27	6.96	6.04	9.78	8.56	19	25.5	28.5	3.91	5.56	7.82
25	1	34.0	5.69	4.98	7.92	6.93	11.38	9.96	22.5	27.0	32.0	4.55	6.35	9.09
32	11/4	42.8	6.07	5.28	7.92	6.93	12.14	10.62	27.0	32.0	35.0	4.85	6.35	9.70
40	11/2	48.9	6.35	5.54	8.92	7.80	12.7	11.12	32.0	38.0	38.0	5.08	7.14	10.15
50	2	61.2	6.93	6.04	10.92	9.50	13.84	12.12	38.0	41.0	54.0	5.54	8.74	11.07
65	21/2	73.9	8.76	7.62	–	–	–	–	41.0	–	–	7.01	–	–
80	3	89.9	9.52	8.30	–	–	–	–	57.0	–	–	7.62	–	–
100	4	115.5	10.69	9.35	–	–	–	–	66.5	–	–	8.56	–	–

Material Feature of Stainless Steel

Stainless steel tees are produced using stainless steel as the raw material. Common stainless steel materials include SS304, SS316, SS321, etc. At the same time, its environmental and health characteristics also meet the requirements of sustainable development in modern society.

Chemical Composition

CHEMICAL	LIMITS	C	Mn	P	S	Si	Ni	Cr	Mo	N
SS304L	MIN						8.00	18.00	\	\
SS304L	MAX	0.035	2.00	0.045	0.030	1.00	13.00	20.00	\	\
SS316L	MIN						10.00	16.00	2.00	\
SS316L	MAX	0.035	2.00	0.045	0.030	1.00	14.00	18.00	3.00	\
SS317L	MIN						11.00	18.00	3.00	\
SS317L	MAX	0.035	2.00	0.045	0.030	1.00	15.00	20.00	4.00	\
SS321	MIN						9.00	17.00	\	\
SS321	MAX	0.080	2.00	0.045	0.030	1.00	12.00	19.00	\	0.10
SS347	MIN						9.00	17.00	\	\
SS347	MAX	0.080	2.00	0.045	0.030	1.00	13.00	19.00	\	\

Mechanical Properties

MATERIAL	T.S (MPA)	Y.S (MPA)	EL %
ASTM A312 TP304L	485 min	170 min	35 min
ASTM A312 TP316L	485 min	170 min	35 min
ASTM A312 TP317L	515 min	205 min	35 min
ASTM A312 TP321	515 min	205 min	35 min
ASTM A312 TP347	515 min	205 min	35 min

Application

Raw Material Transportation

Chemical Process Transportation

HVAC System

Water Supply System

Drainage System

Sewage Treatment System

Fresh Water System

Fire Protection System

Automotive Piping

Air Conditioning System

Food Processing

Stainless steel equal tees are widely used in multiple industries. Meanwhile, its diverse sizes and specifications, as well as flexible connection methods, also meet the needs of different pipeline systems.

The post Types of Stainless Steel Equal Tee appeared first on Quality Manufacturer of Industrial Pipe Fittings.