• icon01
  • 378_2025032719101269029.webp
  • icon03
  • 1
  • 819_2025032811520752409.png
guandao

Steel Pipes - ASTM A268

ASTM A268/ A268M-24 covers a variety of ferritic and martensitic stainless steel seamless steel pipe and welded steel pipe, suitable for general corrosive environment and high temperature environment and other application scenarios, providing a unified standard and requirements for the production, inspection and use of these steel pipes.



СПАМПАВАЦЬ PDF

Steel Pipes - ASTM A268

 

Specifications Range
Out Diameter 6.00mm to 219mm
Wall Thickness 0.5mm to 12.7mm

 

ASTM A268 Standard Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service. Covers standard specification for a number of grades of nominal wal thickness, welded ferritic and martensitic stainless steel tubing for general corrosion-resisting and high-temperature service.

The steel shall conform to the required chemical composition for carbon, manganese, phosphorus, sulfur, silicon, nickel, chromium, molybdenum, aluminum, copper, nitrogen, titanium, and columbium. The number of tubes in a lot heat treated by the continuous process shall be determined from the size of the tubes. The steel shall conform to the following tensile properties: tensile strength, yield strength, and elongation. 

The tubes shall have a hardness number that will not exceed the prescribed Brinell and Rockwell hardness values. Several mechanical tests shall be conducted, namely: tension test; flaring test (for seamless tubes); flange test (for welded tubes); hardness test; reverse flattening test; intergranular corrosion test; and hydrostatic or nondestructive electric test.

Grade TP439 is used primarily for hot-water tank service and does not require post-weld heat treatment to prevent attack of the heat affected zone.

Note 1-TP329 (S32900) formerly in this specification. has been transferred to Specifications A 789/A 789M and 790/A 790M.

An optional supplementary requirement is provided,and when desire, shall be so stated in the order.



Note 2-For tubing smaller than 1/2 in. [12.7 mm] in outside diameter, the elongation values given for strip specimens in Table 2 shall apply. Mechanical properties requirements do not apply to tubing smaller than 1/8 in. [3.2mm] in outside diameter or with walls thinner than 0.015 in. [0.4 mm].

The values stated in either inch-pound units or SIunits are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are 

Калі вы зацікаўлены ў нашых прадуктах, вы можаце пакінуць сваю інфармацыю тут, і мы звяжамся з вамі ў бліжэйшы час.


Напішыце тут сваё паведамленне і адпраўце яго нам
  • Jul . 02, 2025
    The Ultimate Guide to Selecting Stainless Steel Bends: Specification Analysis and Industrial Applications Under ASTM A234 Standard
    In the realm of industrial piping systems, stainless steel bends stand as critical components that ensure seamless fluid flow and structural integrity.
    The Ultimate Guide to Selecting Stainless Steel Bends: Specification Analysis and Industrial Applications Under ASTM A234 Standard
  • Jul . 02, 2025
    The Cost-Effectiveness Code of K55 Grade: How API 5CT Pipe Optimizes Cost and Performance for Conventional Oil Wells
    In the oil and gas industry, balancing operational costs with reliable performance in conventional oil wells is a constant challenge.
    The Cost-Effectiveness Code of K55 Grade: How API 5CT Pipe Optimizes Cost and Performance for Conventional Oil Wells
  • 31
  • admin@ylsteelfittings.com
  • 11
Вы выбралі 0 прадукты

Калі вы зацікаўлены ў нашых прадуктах, вы можаце пакінуць сваю інфармацыю тут, і мы звяжамся з вамі ў бліжэйшы час.