ASME B16.5 Weld Neck Flange Dimension and Weight

ZIZI ENGEERING, would like to take the opportunity to introduce as a leading ASME B16.5 weld neck flange. They are used for the oil, gas, petrochemical and allied industries.

ASME B16.5 Standard

ASME B16.5 standard covers pressure-temperature ratings, materials, dimensions, tolerances, marking, testing, and methods of designating openings for pipe flange and flange fittings. This standard covers steel flanges from NPS 1/2 through NPS 24 Metric/Inch in pressure class 150 to class 2500. 

Size Range	1/2″ to 24″ DN10-DN600
ASME Pressure Rating	Class 150 , 300, 600, 900, 1500, 2500
Coating	Oil Black Paint, Anti-rust Paint, Zinc Plated, Yellow Transparent, Cold and Hot Dip Galvanized Stainless Steel Weld Neck Flange
Test Certificates	EN 10204/3.1BRaw Materials Certificate100% Radiography Test ReportThird Party Inspection Report, etc
Production technique	Forged, Heat treated and machined
Sealing Face Type	Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF), Large Male-Female (LMF), Lap-Joint Face (LJF), Small Male-Female (SMF), Small Tongue, Large Tongue & Groove, Groove
Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2, Test Certificates certifying NACE MR0103, NACE MR0175

What is Weld Neck Flange

ASME B16.5 Weld neck flange, also called a tapered hub flange or high-hub flange, is a kind of flange that can relocate stress to the pipes, ensuring a decrease in high-stress concentration at the bottom of the flange. They are high integrity flanges and are available in all sizes, all common face types (FF, RF, RTJ). Due to the strength of the hub and the integrity of the weld, this type of flange is well suited for elevated temperature and pressure applications.

Weld Neck Flange Dimension and Weight

ASME B16.5 weld neck flange dimensions including different pressure ratings. Class 150 , Class 300, Class 400, Class 600,Class 900, Class 1500, Class 2500, view below for more details.

 Class 150 Weld Neck Flange Class 150 Dimension & Weight

Nominal Pipe Size		A	B	C	D	E	F	G	H	I	J	Weight
inch	mm	mm	mm	mm	mm	mm	mm	mm	Holes	mm	mm	kg/ piece
1/2	21.30	88.90	15.70	11.20	47.80	21.30	30.20	35.00	4	15.70	60.45	0.48
3/4	26.70	98.60	20.80	12.70	52.30	26.70	38.10	42.90	4	15.70	69.85	0.71
1	33.40	108.0	26.70	14.20	55.60	33.50	49.30	50.80	4	15.70	79.25	1.01
11/4	42.20	117.3	35.10	15.70	57.15	42.20	58.70	63.50	4	15.70	88.90	1.33
11/2	48.30	127.0	40.90	17.50	62.00	48.30	65.00	73.15	4	15.70	98.60	1.72
2	60.30	152.4	52.60	19.10	63.50	60.45	77.70	91.90	4	19.10	120.7	2.58
21/2	73.00	177.8	62.70	22.40	69.85	73. 15	90.4	104.6	4	19.10	139.7	4.11
3	88.90	190.5	78.00	23.90	69.85	88.90	108.0	127.0	4	19.10	152.4	4.92
31/2	101.6	215.9	90.20	23.90	71.40	101.6	122.2	139.7	8	19.10	177.8	6.08
4	114.3	228.6	102.40	23.90	76.20	114.3	134.9	157.2	8	19.10	190.5	6.84
5	141.3	254.0	128.3	23.90	88.90	141.2	163.6	185.7	8	22.40	215.9	8.56
6	168.3	279.4	154.2	25.40	88.90	168.4	192.0	215.9	8	22.40	241.3	10.6
8	219.1	342.9	202.7	28.40	101.6	219.2	246.1	269.7	8	22.40	298.5	17.6
10	273.0	406.4	254.5	30.20	101.6	273.0	304.8	323.8	12	25.40	362.0	24.0
12	323.8	482.6	304.8	31.75	114.3	323.8	365.3	381.0	12	25.40	431.8	36.5
14	355.6	533.4		35.10	127.0	355.6	400.1	412.7	12	28.40	476.3	48.4
16	406.4	596.9		36.60	127.0	406.4	475.2	469.9	16	28.40	539.8	60.6
18	457.2	635.0		39.60	139.7	457.2	505.0	533.4	16	31.75	577.9	68.3
20	508.0	698.5		42.90	144.5	508.0	558.8	584.2	20	31.75	635.0	84.5
24	609.6	812.8		47.80	152.4	609.6	663.4	692.1	20	35.10	749.3	115

Download the size and weight chart of ASME B16.5 WN flange

Download the ASME B16.5 Standard

Advantage

ASME B16.5 weld neck flange is a top choice for industries requiring durability and strength in high-pressure systems.

High strength and durability

Good plasticity and weld ability

Wide application range

Standardization and Interchangeability

Excellent cost-effectiveness

Applications

Construction

Petrochemical industry

Shipbuilding industry

Engineering

Power generation industry

Food processing industry

Oil and gas industry

December 6, 2024