GOST 12820-80 PN1.0 Plate Flanges Duplex Steel A182 F51, UNS 31803/2205

GOST 12820-80 Flange Gost flange is a flange system from Russia, include Plate Flanges(GOST12820-80),Blind Flanges(GOST12836-67),Welding neck Flanges(GOST12821-80), Steel Butt-Welded Flanges GOST12821-80 etc., size from DN10 to DN1600, Plate flange, welding neck flange, slip on welding plate...

Product Details

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GOST 12820-80 Flange

Gost flange is a flange system from Russia, include Plate Flanges(GOST12820-80),Blind Flanges(GOST12836-67),Welding neck Flanges(GOST12821-80), Steel Butt-Welded Flanges GOST12821-80 etc., size from DN10 to DN1600, Plate flange, welding neck flange, slip on welding plate flange.

Pressure PN =1,0 МPа (10 kgf/cm²))
Description	D, мм	D1, мм	Dв, mm	B, mm	d, мм	Ot., Pcs.	Weight, kg.
Plate flange GOST 12820-80 (01) 1-15-10 ст.3 (20)	95	65	19	10	14	4	0,51
Plate flange GOST 12820-80 (01) 1-20-10 ст.3 (20)	105	75	26	12			0,74
Plate flange GOST 12820-80 (01) 1-25-10 ст.3 (20)	115	85	33	12			0,89
Plate flange GOST 12820-80 (01) 1-32-10 ст.3 (20)	135	100	39	14	18		1,4
Plate flange GOST 12820-80 (01) 1-40-10 ст.3 (20)	145	110	46	15			1,71
Plate flange GOST 12820-80 (01) 1-50-10 ст.3 (20)	160	125	59	15			2,06
Plate flange GOST 12820-80 (01) 1-65-10 ст.3 (20)	180	145	78	17			2,8
Plate flange GOST 12820-80 (01) 1-80-10 ст.3 (20)	195	160	91	17			3,19
Plate flange GOST 12820-80 (01) 1-100-10 ст.3 (20)	215	180	110	19		8	3,96
Plate flange GOST 12820-80 (01) 1-125-10 ст.3 (20)	245	210	135	21			5,4
Plate flange GOST 12820-80 (01) 1-150-10 ст.3 (20)	280	240	161	21	22		6,62
Plate flange GOST 12820-80 (01) 1-200-10 ст.3 (20)	335	295	222	21			8,05
Plate flange GOST 12820-80 (01) 1-250-10 ст.3 (20)	390	350	273	23		12	10,65
Plate flange GOST12820-80 (01) 1-300-10 ст.3 (20)	440	400	325	24		12	12,9
Plate flange GOST12820-80 (01) 1-350-10 ст.3 (20)	500	460	377	24		16	15,85
Plate flange GOST12820-80 (01) 1-400-10 ст.3 (20)	565	515	426	26	26	16	21,56
Plate flange GOST12820-80 (01) 1-500-10 ст.3 (20)	670	620	530	28	26	20	27,7
Plate flange GOST 12820-80 (01) 1-600-10 ст.3 (20)	780	725	630	31	30	20	39,4
Plate flange GOST 12820-80 (01) 1-800-10 ст.3 (20)	1010	950	820	37	33	24	79,16
Plate flange GOST12820-80 (01) 1-1000-10 ст.3 (20)	1220	1160	1020	43	33	28	118,43
Plate flange GOST 12820-80 (01) 1-1200-10 ст.3 (20)	1455	1380	1220	51	39	32	197,44

Standard	GOST STANDARD
Type	GOST 12820-80 Flange
Dimension	DN10～DN1600
Wall thickness	SCH 5s 10s 20s 30s 40s 80s 160s XXS
Standard	GOST STANDARD
Type	GOST 12820-20 Flange
Dimension	DN10～DN1600
Wall thickness	SCH 5s 10s 20s 30s 40s 80s 160s XXS
Material:	Duplex steel	A182 F51, UNS 31803/2205
	Stainless steel	304/304L 316/316L
	Alloy steel:	A182 F1/ F5/ F9/ F11, F22
	Carbon steel	A105, A181
	Copper nickel	90/30, 70/30
	Titanium alloy	Gr2, Gr3, Gr5
Pressure rate	PN6
	PN10
	PN16
	PN25
Application:	Shipbuilding &Marine industry, Oil &gas industry, On/Off shore.
Surface treatment	Anit-oil, epoxy zinc rich primer(transparent/yellow/black), hot dipped galvanized and cold galvanized
Certificate	ISO9001:2008, CR, CCS,RS,BV,NK,RINA,LR,ABS,DNV,GL,TUV

Production:

1. Cutting: material is cool cut or saw cut.

2. Forging: after heating up, all material blocks are free forged, die forged or ring rolled according to their size.

3. Heat Treatment: We have 6 sets of electric shaft furances,3 sets of high-temperature, car type electric furnaces, and can do normalizing treatment and drawing temper.

4. Machining: Rough parts are machined by engine lathe and digital lathe according to the size, flange type and tolerance requirement.

5. Drilling: The semi-finished-products are drilled.

6. Surface treatment: Die-stamp, wash, paint, oil or galvanize flanges according to the customers\' requirement.

7. Packing: Pack the flange as requested

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