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Butt Welded Cap SCH 80

Butt welded cap is a pipe fitting used to closed the piping systems.BW caps use welding connection to connect with the pipes.SCH 80 is a commonly used wall thickness of BW fittings,the other commonly used wall thickness is SCH 40.

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BW(butt welded) cap is a pipe fitting which is used to weld with the end of the pipe system,its function is similar to blind flange and plug.However,blind flange and plug can be disassembled and replaced while BW can not.The joint connection of welded is permanent.Schedule (SCH) 80 is represents one commonly used of the thickness of the welded fittings.


This is stainless steel butt welded cap,it is popular as its corrosion resistance and using period both better than other materials.




  • Preventing leakage permanently
  • Adding strength and power to the piping structure
  • Reducing pressure losses



Shape  Cap
Size Range 1/2″ – 80″ / DN15 – 2000
Thickness Schedule SCH 10,SCH 10S, SCH 20, SCH 40,SCH 40S, STD, XS,SCH 80, SCH 80S, SCH 100, SCH 120, SCH 160, XXS
China Standard GB/T12459, GB/T13401, HG/T21635/21631, SH3408/3409
America Standard ANSI / ASME B16.9 / MSS SP 43
apan Standard JIS B2311/2312/2313
Europe Standard EN10253
Carbon Steel Q235, 20#, 35#, 45#, 20G,ASTM A234 WPB/WPC
Low Temp Carbon Steel Q345B, 16Mn, ASTM A420 WPL6
Pipeline Steel ASTM A860 WPHY 42 / 46 / 56 / 60 / 65
Alloy Steel ASTM A234 WP11 / WP12 / WP 5 / WP9 / WP91 / WP92,15CrMoG, 12Cr1MoVG, 12Cr5Mo, 1Cr5Mo, Cr9Mo, 10CrMo910, 12CrMo4-5
Stainless Steel ASTM A403 WP304/304L/304H, 316/316L, 310S, 321, 317,347,904L
Duplex Stainless Steel ASTM A815 S32205, S31803, 32750, 32760





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