TOBO STEEL GROUP CHINA
TOBO GROUP TOBO International Trading(Shanghia)Co.,Ltd Tianda Oil Pipe Co., Ltd TOBO Pipeline Equipment Co.,Ltd TPCO & TISCO Pipe(Tianjin)Co.,Ltd.
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904L / NO8904 / 1.4539 Stainless Steel Stub Ends Lap Joint Stub End 1/2” To 24”SCH10S SCH80S ASME/ANSI B16.9
904L Super Austenstic Stainless Steel(1.4539,UNS N08904)
904L is a high-alloy austenitic stainless steel with low carbon content. The grade is intended for use under severe corrosive conditions. It has been application proved over many years and was originally developed to resist corrosion in dilute sulfuric acid. It is standardized and approved for pressure vessel use in several countries. Structurally, 904L is fully austenitic and is less sensitive to precipitation ferrite and sigma phases than conventional austenitic grades with high molybdenum content. Characteristically, due to the combination of relatively high contents of chromium, nickel, molybdenum and copper 904L has good resistance to general corrosion, particularly in sulfuric and phosphoric conditions.
Chemical Composition %
C Cr Cu Mn Mo Ni P S Si
0.02 19.0-23.0 1.0-2.0 2.0 4.0-5.0 23.0-28.0 0.045 0.035 1.0
Production and transport of sulfuric acid
Metal pickling in sulfuric acid
Production and concentration of phosphoric acid
Use in seawater, brackish water, condensers, heat exchangers and pipe work in general
Paper and allied industries
Gas washing
Chemical and pharmaceutical industries
TENSILE REQUIREMENTS
Tensile Strength (KSI) 70
Yield Strength (KSI) 25
Product Name: Butt Welding Stainless Steel Fitting Stub end
Size Range:
DN15-DN600 (1/2"-24") Seamless Type
DN15 - DN1200 (1/2"- 48" ) Welded type
Wall Thickness: SCH5 to SCH160
Material:
Carbon Steel: ASTM A234 WPB, WPC, ASTM A420 WPL1, WPL3, WPL6 etc
Stainless Steel: ASTM A403 WP304/304L, WP316/316/L, WP317L, WP321, WP347 & WPS31254
Alloy Steel: ASTM A234 WP1/WP12/WP11/WP22/WP5/WP7/WP9/WP91
Duplex and super duplex steel: ASTM A815 UNS S31803/S32205/S32750/S32760
DIN 1.4301,1.4401,1.4404,1.4541,1.4401,1.4571 etc
Manufacture Standard:
ASME B16.9,ASME B16.11,ASME B16.28 ,MSS SP-43,JISB2311,JIS B2312,JIS B2313,DIN 2605,DIN 2606 ,DIN2615,DIN2616 ,BG12459-90,GB/T13401,HGJ514 ,SH3408 ,SH3409, HG/T21635, HG/T21631,
End Bevel: According to the standard or the customer's requirements
Surface Treatment: Shot blasted, rust-proof black oil
Non-destructive testing: penetration test, ultrasonic test, radiographic test, any third parties inspection,
