ASME B16.47 Series B Class 600 Welding Neck Flanges


YANHAO is a manufacturer, supplier and exporter of ASME B16.47 Series A Class 600 Weld Neck Flanges suitable for large diameter pipes from NPS 26 to NPS 60. B Series flanges are medium-pressure compact flanges and in most cases, these flanges have a smaller bolt circle diameter than A Series flanges. The welded neck design adds greater strength and stability, capable of withstanding greater pipe loads, and can be used in general household, commercial and industrial application

Yanhao’s ASME B16.47 B series casting flanges are made of stainless steel, carbon steel, and alloy steel. We usually supply standard flanges; if you need to order a special model and bore size, please contact our experts.

Custom Flanges

Class 600 dimensions | ASME B16.47 Series B Flange

Nominal Pipe SizeOutside Diameter (O)Bolt Circle (W)Raised Face Diameter (R)Number of HolesDiameter of HolesBore (B)Top of Hub (A)Hub Diameter (X)Minimum Fillet Radius (r)Minimum Thickness (T)Length Thru Hub (Y)Approximate Weight (lbs)
2635.0031.7528.62281.75Specified by purchaser26.0027.500.504.387.12550
2837.5034.0030.88281.88Specified by purchaser28.0029.620.504.567.50650
3040.2536.5033.12282.00Specified by purchaser30.0031.750.504.948.06810
3242.7538.7535.25282.12Specified by purchaser32.0033.880.505.128.50950
3445.7541.5037.50242.38Specified by purchaser34.0036.000.565.569.191205
3647.7543.5039.75282.38Specified by purchaser36.0038.120.565.759.561340
3850.0045.7541.50282.38Specified by purchaser38.0040.250.566.0010.001470
4052.0047.7543.75322.38Specified by purchaser40.0042.250.566.2510.381630
4255.2550.5046.00282.62Specified by purchaser42.0044.380.566.6211.002030
4457.2552.5048.25322.62Specified by purchaser44.0046.500.566.8111.382160
4659.5054.7550.25322.62Specified by purchaser46.0048.620.567.0611.812410
4862.7557.5052.50322.88Specified by purchaser48.0050.750.567.4412.442855
5065.7560.0054.50283.12Specified by purchaser50.0052.880.567.7512.943330
5267.7562.0056.50323.12Specified by purchaser52.0054.880.568.0013.253560
5470.0064.2558.75323.12Specified by purchaser54.0057.000.568.2513.753920
5673.0066.7560.75323.38Specified by purchaser56.0059.120.628.5614.254280
5875.0068.7563.00323.38Specified by purchaser58.0061.120.628.7514.564640
6078.5071.7565.25283.62Specified by purchaser60.0063.380.699.1915.315000
  • All dimensions are in inches.
  • These flanges will be furnished with a 1/4″ raised face unless otherwise specified. For more alternate flange facings, please click here!

Weld Neck Flange

Weld Neck Flange is a type of industrial pipe connection, especially used in pressure pipeline systems. Thanks to the high structural strength, sealing performance, corrosion resistance, and the characteristics of withstanding high temperature and pressure of the welding neck flange, it can be used for oil transportation pipelines, ship pipeline systems, and the transportation of raw materials in chemical plants, etc.

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ASME B16.47 Forged Flanges FLANGE CLASSES

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About YANHAO

Aerial view of YANHAO Factory
Aerial view of YANHAO Factory

YANHAO is a flange manufacturer located in Hebei Province, China. It is one of the few professional flange suppliers in China.

We have many years of experience in flange production and have multiple flange production lines. We have sufficient stock of raw materials, rich inventory, fast delivery, and can ship within three days. At the same time, the price is affordable. You are welcome to consult and purchase!

In addition, we can provide a variety of bespoke flanges and pipe fittings. Customers can give drawings or samples, and our company will produce them to fit your specific requirements.

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