ASTM A312 TP 904L Pipes,GOST 9941 904L Pipes,1.4539 Stainless steel pipe

We are a professional manufacturer and exporter of ASTM A312 TP 904L Pipes,GOST 9941 904L Pipes,1.4539 Stainless steel pipe in China, 06Х28МДТ Pipe (AISI 904L Pipes) 

ASTM A312 TP 904L pipes are super austenitic stainless steel pipes designed for highly corrosive environments, especially those involving strong acids and chlorides. Manufactured in accordance with ASTM A312, TP 904L pipes offer outstanding resistance to pitting, crevice corrosion, and chloride stress corrosion cracking, making them a preferred choice for chemical processing, offshore, and desalination applications.

What Is ASTM A312?

ASTM A312 is the standard specification for seamless, welded, and heavily cold-worked austenitic stainless steel pipes intended for high-temperature and general corrosive service. The specification defines requirements for:

• Chemical composition

• Mechanical properties

• Heat treatment

• Dimensional tolerances

• Testing and inspection

With its alloy composition, A312 TP904L stainless steel pipes exhibit excellent high-temperature strength and oxidation resistance. These pipes maintain their mechanical properties even at elevated temperatures, making them suitable for applications such as chemical processing, petrochemical, and offshore installations.

GOST 9941 904L pipes are seamless stainless steel pipes manufactured in accordance with the Russian standard GOST 9941, using super austenitic stainless steel 904L (UNS N08904). These pipes are designed for highly corrosive environments, offering excellent resistance to sulfuric acid, phosphoric acid, chlorides, and stress corrosion cracking.

Material Grade: TP 904L (UNS N08904)

TP 904L is a low-carbon, high-alloy austenitic stainless steel with elevated levels of nickel, chromium, molybdenum, and copper, providing superior corrosion resistance compared to standard stainless steels.

Material 1.4539 (alloy 904L, UNS N08094) is an austenitic special steel with high molybdenum content as well as addition of copper and extremely low carbon content.

AISI 904L is a non-stabilised low carbon high alloy austenitic stainless steel. The addition of copper to this grade gives it greatly improved resistance to strong reducing acids,particularly sulphuric acid. It is also highly resistant to chloride attack – both pitting crevice corrosion and stress corrosion cracking. This grade is non-magnetic in all conditions and has excellent weldability and formability. The austenitic structure also gives this grade excellent toughness, even down to cryogenic temperatures. 904L does have very substantial contents of the high cost ingredients nickel and molybdenum. Many of the applications in which this grade has previously performed well can now be fulfilled at lower cost by duplex stainless steel 2205 (S31803 or S32205),

Super austenitic 904L Stainless Steel seamless Pipe (UNS: N08904; EN: 1.4539) is a high alloy austenitic stainless steel with low carbon content. It has good corrosion resistance in dilute sulfuric acid, and is specially designed for harsh corrosion conditions. It has high chromium content and enough nickel content. The addition of copper makes it have strong acid resistance, especially to chloride gap corrosion and stress corrosion cracking. 904L Stainless Steel seamless Pipe is not easy to appear corrosion spots and cracks. Its pitting corrosion resistance is slightly better than other steel grades. It has good machinability and weldability, and can be used in pressure vessels

Our product range in 1.4539 are tubes and pipes, fittings and flanges, accessories.

1. Commodity: Seamless Stainless Steel Pipe ASTM B677 UNS N08904/904L
2. Material: UNS N0904L Stainless Steel Pipe(Tube) Standards
3. Standards:

ASTM A 312 – seamless, welded, and heavily cold worked austenitic stainless steel pipes
ASTM A 213 – seamless ferritic and austenitic alloy-steel boiler, super heater, and heat-exchanger tubes
ASTM A 269 – seamless and welded austenitic stainless steel tubing for general service
ASTM B 677 – uns n08904, uns n08925, and uns n08926 seamless pipe and tube8904/904L

4. Size:
A) NPS: 1/8″ to 8″
B) Schedule: 5/5S, 10/10S, 20/20S, 40/40S, 80/80S, 120/120S, 160/160S, acc. To ANSI B36.19

ASTM Material grade: N08904, 904L,

European material grade : X1NiCrMoCu25-20-5, 1.4547

How to order our AISI 904L Pipes?

Example#1,AISI 904L 57x3mm Seamless stainless steel Pipe Quanity:5 tons

Example#2,AISI 904L  89*4.5 mm Seamless stainless steel Pipe Quanity:3 tons

ASTM A312 TP 904L stainless steel pipes provide exceptional corrosion resistance, mechanical reliability, and long service life in highly aggressive chemical and offshore environments. Fully compliant with ASTM A312, 904L pipes are a proven solution for sulfuric acid, chloride-rich, and critical process systems.

Download ASTM_A312_TP904L_Pipe_Specification