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S31254 Stub End

The stub end is usually a short section of pipe fittings, with one end being a flap structure, and the other end can be a stub end or special processing according to specific needs. The turning part is designed to facilitate the connection with other pipe fittings or equipment.

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The stub end is usually a short section of pipe fittings, with one end being a flap structure, and the other end can be a stub end or special processing according to specific needs. The turning part is designed to facilitate the connection with other pipe fittings or equipment.

S31254 is a super austenitic stainless steel with excellent corrosion resistance. It also has good mechanical properties, including high strength and toughness. In high temperature environments, S31254 can still maintain good strength, which makes the flanged short section made of it less likely to deform or damage when subjected to a certain pressure. For example, in the connection parts of high-temperature chemical reaction vessels, S31254 stub end can stably connect different components.

In the process of oil and gas extraction, transportation and processing, corrosion and high pressure are also faced. S31254 stub ends can be used in the pipeline system of offshore oil platforms to connect wellhead equipment with transmission pipelines, or to connect different process pipelines in natural gas processing plants. Due to the harsh offshore environment and the high level of corrosive components in seawater and oil and gas, the S31254 stub end can effectively resist corrosion and ensure the normal operation of the pipeline system.

Specification of Stub End 

Type Long Pattern (LP) and Short Pattern (SP)
Size Range 1/2” – 24” / DN15 – 600
Thickness Schedule SCH 10 – SCH 160, XXS
China Standard GB/T12459, GB/T13401, HG/T21635/21631, SH3408/3409
America Standard ANSI / ASME B16.9 / MSS SP 43
Japan Standard JIS B2311/2312/2313
Germany Standard DIN2605/2615/2616/2617
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, 317,347,904L
Duplex Stainless Steel ASTM A815 S32205, S31803, 32750, 32760

Material Standard for Stainless Steel Stub End

Chemical Composition

CHEMICAL LIMITS C Mn P S Si Ni Cr Mo
ASTM A403 WP304 MIN 8.0 18.0
MAX 0.08 2.00 0.045 0.030 1.00 11.0 20.0
ASTM A403 WP316 MIN 10.0 16.0 2.00
MAX 0.08 2.00 0.045 0.030 1.00 14.0 18.0 3.00

Mechanical Properties

MATERIAL ASTM A403 WP304 ASTM A403 WP316
T.S (MPA) 515 min 515 min
Y.S (MPA) 205 min 205 min
EL % 28 min 28 min

Application of S31254 Stub End

Chemical Industry: In chemical production, many pipeline systems need to transport corrosive chemicals. S31254 stub end can be used to connect different pipeline sections or connect pipelines to chemical equipment, such as reactors, heat exchangers, etc. For example, in a sulfuric acid production workshop, the use of S31254 stub end in the pipeline system can ensure the sealing and reliability of pipeline connections under the high temperature and highly corrosive environment of sulfuric acid.

Oil and Gas Industr: In the process of oil and gas extraction, transportation and processing, they also face problems such as corrosion and high pressure. S31254 stub end can be used in the pipeline system of offshore oil platforms to connect wellhead equipment with transmission pipelines, or to connect different process pipelines in natural gas processing plants. Due to the harsh offshore environment and the high corrosive components in seawater and oil and gas, S31254 stub end can effectively resist corrosion and ensure the normal operation of the pipeline system.

Power Industry: S31254 stub end may be used in the cooling system of thermal power generation or nuclear power generation. For example, in the cooling water piping system of a thermal power plant, it is necessary to prevent the cooling water (which may contain certain corrosive substances) from corroding the pipes. The S31254 stub end can provide a reliable connection and resist corrosion, ensuring the efficient operation of the cooling system.

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