Factory Direct Welding Neck Flange GOST 12821, Sizes 1"-8" DN25-DN200

PN/Мpа	0.1-0.6	1.0-6.3	10	16	20
DN/MM	10-1600	10-1200	10-400	15-300	15-200
От минус 253 до плюс 600°
STEEL 20,25,Q235,304,316

Data

Welding Neck Flange
Standard	ANSI	ANSI B16.5, ASME B16.47 series A/B
	DIN	Germany 6bar, 10bar, 16bar, 25bar, 40bar
	GOST	GOST 12820/12821/12836
	EN1092-1	EN1092-01/05/11/12/13
	JIS	JIS B 2220-1984, KS B1503, JIS B 2216
	BS4504	BS4504 BS10 Table D/E
Items	Plate, Welding Neck, Slip on, Blind, Socket Welding, Lap joint, Threaded Flange etc.
Material	ASTM A105 ST37.0 A350 LF2 A694 F60 A694 F70 SS304 SS321 SS316
Nominal Pressure	class150 PN16 PN10
Applicable Medium	oil,gas,water or other medium;
Technology	Forge&CNC machining
Delivery Time	15-60 days
Payment Term	FOB,CIF
Packaging	Plywood cases

Product Introduction

GOST 12821 PN1.6 welding neck flange belongs to the Russian standard flange system. It is one of the manifestations of Russian standard flange (also known as GOST flange), and it is a common flange on equipment or pipeline. Now the field of application of the flange is more and more widely, but not for professionals to choose the right flange is very difficult, just to face so many flange standards, we are not very clear. So let me take the Russian standard flange as an example. Explain it Sealing surface form: protrusion (RF), concavo-convex (MFM), tongue and groove (TG), ring connection (RJ) Material: Carbon Steel: ASTM A105, 20 #, Q235, 16Mn, ASTM A350 LF1, LF2 CL1 / CL2, LF3 CL1 / CL2, ASTM A694 F42, F46, F48, F50, F52, F56, F60, F65, F70; Stainless steel (Stainess Steel): ASTM A182 F304, 304L, F316, 316L Manufacturing standards: ANSI B16.5, HG20619-1997, GB / T9117.1-2000-GB / T9117.4-200, HG20597-1997 Connection: flange nut, bolt connection Production process: professional forging, forging manufacturing and so on Processing methods: high-precision CNC lathe turning, general lathe fine car, welding and other processing Applications: Boiler and pressure vessels, petroleum, chemical, shipbuilding, pharmaceutical, metallurgy, machinery, stamping elbow food and other industries. Welded neck flange not easy to distortion, good sealing, widely used, butt thinning transition weld joints ,horn shape, avoid shape change when welding in high temperature. applicable to high temperature pipeline, high pressure and low temperature pipeline, normally used to connect pipes and valves which PN is greater than 2.5MPa; also used to transport expensive, flammable, explosive media pipeline.

Welding Neck Flange GOST 12821 1"-8" DN25-DN200

Products Details

Data

Product Introduction

Picture

Featured Products

Contact us