China Butt Weld Fittings manufacturer


TOBO International Trading(Shanghia)Co.,Ltd       Tianda Oil Pipe Co., Ltd

TOBO Pipeline Equipment Co.,Ltd        TPCO & TISCO Pipe(Tianjin)Co.,Ltd.                        


September 10, 2021

904L / NO8904 / 1.4539 Stainless Steel Stub Ends Lap Joint Stub End 1/2” To 24”

904L / NO8904 / 1.4539 Stainless Steel Stub Ends Lap Joint Stub End 1/2” To 24”



Detailed Product Description

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
Testing:: Direct Reading Spectrometer,Hydrostatic Test,X-Ray Flaw Detector,Ultrasonic Flaw Detector,Magentic Particle Inspection,etc Surface Finish:: Sand Blast, Black Painting, Galvanizing Finish
Manufacturing Process: Push, Press, Forge, Cast, Etc. Application: Petroleum/Power/Chemical/Construction/Gas/Metallurgy/Shipbuilding Etc
Non-destructive Testing:: Penetration Test, Ultrasonic Test, Radiographic Test, Any Third Parties Inspection,ed In Wooden Cases, Wooden Pallets Or As Per Customers Request    


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 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
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,



Contact Details