Carbon steel threaded flange seal type:

Convex surface (RF), full plane (FF). Other sealing surface dimensions can be customized according to customer requirements;

Production process of carbon steel threaded flange:

1. The whole forging process of round steel;

2. Forging, cutting and forming process of finished products;

3.Steel plate cutting and blanking processing technology;

4.Blank forging, ring expanding machine hot expansion production process; Production standards: American Standard, German standard, European standard, British standard, Japanese standard and South African standard

British standard carbon steel thread flange production pressure size 

Specification: 

BS4504 113 PN6 DN10-DN150

BS4504 113 PN10 DN10-DN150

BS4504 113 PN16 DN10-DN150

BS4504 113 PN25 DN10-DN150

BS4504 113 PN40 DN10-DN150

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

Carbon steel threaded flange can be divided into: (20#, A3, Q235A, Q235B, 20G, 16Mn, ASTM A234WPB, ASTM A105, etc.);

Standard classification

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

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

Common standards:

National 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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