Shaped metal spiral wound gasket

Shaped metal spiral wound gasket Model: ZD-G1205 shaped profiled metal spiral wound gasket spiral wound gasket is usually applied to a boiler manholes, hand holes, valve cover gaskets, etc., the same as the structure of metal spiral wound gasket, just different shapes. There are oval, square, diamond and other forms of spiral wound gasket, other shapes can be produced according to drawings. Special shape spiral wound gasket is generally basic type spiral wound gasket. Features :: high temperature, high pressure, corrosion resistance and good compression resilience. Equipment: junction petroleum, chemical, metallurgy, electric power, shipbuilding, machinery and other sectors of pipes, valves, pressure vessels, condensers, heat exchangers, towers, manholes, hand holes and other seals. Spiral wound gasket structure and code and using the flange Category: Basic model code applicable flange sealing surface Thickness (mm) V-type basic body / Ring W-type basic body / Ring basic type A or R-type tongue and groove, convex surface , plane and groove surface 3.2; 4.5 4.8; 5.5; 7.5 Materials: 1. profiled metal spiral wound gasket A. metal strip with a thickness of 0.15mm ~ 0.25mm of, sus304, sus316L, sus321 cold rolled strip, or by both the two sides negotiated. B. preformed metal strip is V-shaped or W-shaped narrow, the surface should be smooth. Clean, there should be rough. Crack. Scratch hardness values ??defects such as pits and pitting of stainless steel HV≤200 2. Alien C. A non-metallic spiral wound gasket with nonmetallic filled with special asbestos, flexible graphite tape, Teflon tape, non-asbestos fiber tape, and mica and the like. With a thickness of 0.3-1.0mm. Chloride content B. special loss on ignition of asbestos must be ≤25% C. nonmetallic belt ≤100PPM D. Recommended temperature and pressure with all kinds of media and various non-metallic spiral wound gasket main technical parameters of various non-metallic materials : material identification code temperature ℃ maximum working pressure for the media compression rate% Rebound rate% stress relaxation rate% expanded graphite FG -220--550 250 BAR corrosive media 18--30 ≥17 ≤18 special asbestos with ASB -150 --450 100 BAR-like tightness 18--30 ≥19 ≤28 polytetrafluoroethylene PTFE -200-- 200 100 BAR corrosive media 18--30 ≥15 ≤13 non-asbestos material NA -100--350 100 BAR general tightness 18--30 ≥19 ≤28 mica MICA -150--800 100 BAR 18--30 ≥19 special high temperature ceramic CER -200--1090 100 BAR UHT 18--40 ≥19 use the following table wound metal commonly used in material selection: Material short name tag hardness (HB) Temperature (° C) Carbon Steel (Carbon steel) CS 120 -40 ~ + 540 SUS 304 304 130 ~ 180 -195 ~ + 550 SUS 316L 316L 130 ~ 180 -100 ~ + 550 SUS 321 321 130 ~ 190 -195 ~ + 760 HASTELLOR-B2 HASTB 215 -185 ~ + 1090 INCONEL-600 INC600 150 -100 ~ + 1090 MONEL-400 MON 150 -130 ~ + 820 titanium TI 215-195 ~ + 1090 wound gasket basic thickness tolerances: Item Thickness (mm) Tolerance (mm) gasket thickness of 4.5, 3.2 +0.2 -0.1 ring thickness of 3.0 ± 0.25 in the following table are spiral wound gasket diameter tolerance (ie for Flange nominal pipe diameter): DIN (mm) ANSI B16.5 BS1560 (mm) Mss sp-44 API 605 pads in diameter tolerances of the inner ring inner diameter <= 600 <= 24 ";> = 26"; and <= 34 "; ± 0.5> 600 and <= 800> 24"; and <= 34 ";> = 36"; and <= 60 "; ± 0.9> 800 and <= 1600> 34"; and <= 60 "; ± 1.3> 1600> 60 "; ± 1.6 gasket outer diameter of <= 600 <= 24"; <= 24 "; ± 0.9> 600 and <= 16000> 24"; and <= 60 ";> 24"; and < = 60 "; ± 1.8 1600> 60"; ± 2.2 outer ring outer diameter> = 1/2 "; and <= 60"; ± 0.9 <= 600 <= 24 "; 0-1.0> 600 and <= 1000> 24 "; and <= 34"; 0-1.8> 1000 and <= 1600 ";> 34"; and <= 60 0-2.2 common metal graphite spiral wound gasket main performance parameters: spiral wound gasket factor m = 2.5-4 spiral wound gasket spiral wound gasket pressure ≤25MPa temperature -196 ℃ -700 ℃ (oxidizing medium is not higher than 600 ℃) wound gasket minimum sealing pressure ratio y = 68MPa technical criteria: 1. metal spiral wound gasket Foreign manufacturing standards: ASME B 16.20, ASME B 16.5, ASME B 16.47 A (B), BS EN1092, JIS, and NF standards, etc. 2 HG20610-2009 domestic steel pipe flanges with spiral wound gasket Ministry of Chemical Industry in Europe. System HG20631-2009 steel pipe flanges with spiral wound gasket Ministry of Chemical Industry American system GB / T4622.2-97 spiral wound gasket flange gasket dimensions of national standards JB / T4719-92 shell and tube heat exchanger winding Gasket machinery of the standard JB / T90-94 pipeline flanges with spiral wound gasket machinery of the standard JB / T4705-2000 pressure vessel flange with a spiral wound gasket machinery of the standard