Threaded flange is a kind of non welded flange, which is made of inner hole of flange into pipe thread and connected with pipe with thread.

Carbon steel threaded flange can be divided into: (20#, A3, Q235A, Q235B, 20g, 16Mn, ASTM a234wpb, ASTM A105, etc.)

American standard carbon steel threaded flange B16.5 model th pressure dimension 

Specification: 

ASME B16.5 CLASS 150 1/2"-24"

ASME B16.5 CLASS 300 1/2"-24"

ASME B16.5 CLASS 400 1/2"-24"

ASME B16.5 CLASS 600 1/2"-24"

ASME B16.5 CLASS 900 1/2"-24"

ASME B16.5 CLASS 1500 1/2"-24"

ASME B16.5 CLASS 2500 1/2"-24"

American Standard NPT thread flange executive standard: ASME / ANSI B16.11

Threaded flange th National Standard: GB / T 9114-2010 ribbed steel pipe flange .

The PN mark has 12 pressure levels, they are:PN2.5,PN6,PN10. PN16.PN25,PN40,PN63, PN100,PN160,PN250,PN320,PN400

The class mark has six pressure levels ,they are: Class 150,Class 300,Class 600,Class 900,Class 1500,Class 2500

Standard classification

Specification: 1 / 2 "～ 80" (DN 10-DN5000)

Pressure rating: 0.25Mpa-250Mpa (150LB-2500LB)

Common standards:

Chinese standard: GB9112-88 (GB9113 · 1-88 ～ GB9123 · 36-88)

American Standard: ANSI B16.5, ANSI 16.47, Class150, 300, 600, 900, 1500 (TH, LJ, SW) Japanese standard: JIS 5K, 10K, 16K, 20K (PL, SO, BL)

German standard: DIN2527, 2543, 2545, 2566, 2572, 2573, 2576, 2631, 2632, 2633, 2634, 2638 （PL、SO、WN、BL、TH）

British Standard: BS4504,4506

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