4. ASME B16.11 Forged steel fittings

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Socket Welding Boss

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Description

Socket Welding Boss is a type of pipe fitting used in welded piping systems by assembling pipes into sockets (holes) and then welding them together. These sockets help create strong and secure connections, ensuring the integrity of the piping system. Socket Welding Boss is usually made of stainless steel, carbon steel, or special alloys to meet different requirements for pressure and temperature.

Applications

Socket Welding Boss is widely used in many industries, including:

Oil and gas industry : Used in oil and gas pipeline systems.
Chemical industry : Used in chemical plants and chemical manufacturing processes.
Energy industry : Used in power plants and renewable energy systems.
Food and beverage processing industry : Used in food and beverage processing systems.
Pharmaceutical industry : Used in pharmaceutical manufacturing processes, requiring high hygiene standards.

Standards

ASME B16.11 is a standard established by the American Society of Mechanical Engineers (ASME) for socket weld and threaded pipe fittings. This standard defines the dimensional, material, tolerance, and working pressure requirements for fittings, including Socket Welding Boss.

Dimensions: The ASME B16.11 standard defines the nominal pipe sizes (NPS) and actual dimensions of Socket Welding Boss. These dimensions include inside diameter, outside diameter, socket depth, and wall thickness. Nominal sizes typically range from 1/8 inch to 4 inches.
Materials: Socket weld fittings shall be manufactured from high quality materials such as carbon steel, alloy steel, stainless steel, or other special alloys. Materials shall comply with the chemical and mechanical standards specified in ASME B16.11.
Working Pressure: ASME B16.11 specifies maximum working pressures for fittings based on material and nominal size. Pressure ratings are classified as Class 2000, 3000, 6000, and 9000, with the higher Class indicating greater maximum working pressure.

Size and thickness table of Socket Welding Boss according to ASME B16.11 standard

Kích thước danh định (NPS)	Đường kính ngoài (OD)	Đường kính trong (ID)	Độ sâu của socket (Socket Depth)	Độ dày của thành ống (Wall Thickness)
1/2″	21.34 mm	15.75 mm	10.92 mm	3.73 mm
3/4″	26.67 mm	20.93 mm	11.18 mm	3.91 mm
1″	33.40 mm	26.64 mm	13.59 mm	4.55 mm
1 1/4″	42.16 mm	35.05 mm	15.11 mm	4.85 mm
1 1/2″	48.26 mm	40.94 mm	15.75 mm	5.08 mm
2″	60.33 mm	52.48 mm	17.53 mm	5.54 mm
2 1/2″	73.03 mm	62.71 mm	19.05 mm	7.01 mm
3″	88.90 mm	77.93 mm	21.34 mm	7.62 mm
4″	114.30 mm	102.26 mm	22.91 mm	8.56 mm
5″	141.30 mm	128.27 mm	25.40 mm	9.53 mm
6″	168.28 mm	154.05 mm	28.45 mm	10.97 mm
8″	219.08 mm	201.93 mm	31.75 mm	12.70 mm
10″	273.05 mm	254.56 mm	35.05 mm	12.70 mm
12″	323.85 mm	304.80 mm	38.10 mm	12.70 mm
14″	355.60 mm	336.55 mm	41.28 mm	12.70 mm
16″	406.40 mm	387.35 mm	44.45 mm	12.70 mm
18″	457.20 mm	438.15 mm	47.63 mm	12.70 mm
20″	508.00 mm	488.95 mm	50.80 mm	12.70 mm
24″	609.60 mm	590.55 mm	57.15 mm	12.70 mm

Summary table of materials commonly used to manufacture Socket Welding Boss according to ASME B16.11 standard:

Material	Describe	Special applications
Carbon steel	ASTM A105	High pressure and high temperature applications
Stainless Steel	ASTM A182 F304/F316	Corrosion resistant, used in food and chemical industries
Alloy steel	ASTM A182 F11/F22/F91	High temperature application and withstand harsh environments
Duplex Stainless Steel	ASTM A182 F51/F53	High corrosion resistance, better mechanical strength
Super Duplex Stainless Steel	ASTM A182 F55/F60	Withstands very corrosive environments, such as marine environments
Nickel alloy	ASTM B564 (Alloy 400, Alloy 600, Alloy 625)	Application in highly corrosive, high temperature environments
Copper alloy	ASTM B61/B62	Corrosion resistant, used in marine industry
Aluminum alloy	ASTM B247	Light weight, corrosion resistant, aerospace applications
Austenitic stainless steel	ASTM A182 F304H/F316H	High temperature application, corrosion resistance
Ferritic stainless steel	ASTM A182 F430	Corrosion resistance, application in food industry