304L Stainless Steel Pipes and Tubes Grades

Type 304 | Type 304L | Type 304H | Type 316 | Type 316L | Type 316H | Type 317L | Type 321 | Type 347  | Type 410 | Type 904L | UNS 32750 Duplex

304L Stainless Steel Pipes and Tubes

ASTM A/ASME SA213/A249/A269/A312/A358 CL. I to V ASTM A789/A790 TP 304L Stainless Steel Pipes and Tubes Stainless Steel Pipes and Tubes

Type 304L is a lower carbon variant of Grade 304-the steel can be welded without the resulting issue of carbon precipitation (precipitation of chromium carbide as heat is applied during the welding process which depletes the chromium element of the steel thus reducing its anti-corrosive/oxidation effectiveness). 

Size : 1/8"NB TO 42"NB IN

Schedule: SCH 10, SCH20, SCH30, SCH40, STD, SCH60, XS, SCH80, SCH120, SCH140, SCH160, XXS
Type : Seamless / ERW / Welded / Fabricated / LSAW Pipes
Form : Round, Square, Rectangular, Hydraulic Etc.
Length : Single Random, Double Random & Cut Length.
End : Plain End, Beveled End, Treaded. 

Nickel Alloy Pipe Standard:

Benefits of using 304L Stainless Steel

• Low carbon content eliminates carbon precipitation in the welding process
• Can be used in severe corrosive environments
• Weld annealing only required in high stress applications
• Very similar to Type 304

304 & 304L Stainless Steel Pipes and pipes have similar properties and in certain cases are stocked with Dual Certification, where it is concluded that each item has properties and a composition which comply with both steel types. Grade 304H cannot be included in this equation due to the steel's higher carbon content which is intended for use in elevated temperature applications. 

304L Stainless Steel Pipes and Tubes Product Range

304L Stainless Steel Pipes and Tubes Specifications: ASTM A/ASME SA213/A249/A269/A312/A358 CL. I to V ASTM A789/A790
304L Stainless Steel Pipes and Tubes Sizes (Seamless): 1/2" NB - 24" NB
304L Stainless Steel Pipes and Tubes Sizes (ERW): 1/2" NB - 24" NB

304L Stainless Steel Pipes and Tubes Sizes (EFW): 6" NB - 100" NB  

304L Stainless Steel Pipes and Tubes Wall Thickness available:
Schedule 5S - Schedule XXS (heavier on request)

Other Materials Testing:

NACE MR0175, H2 SERVICE, OXYGEN SERVICE, CRYO SERVICE, etc.

304L Stainless Steel Pipes and Tubes Dimensions:

All Pipes is manufactured and inspected/tested to the relevant standards including ASTM, ASME and API etc. 

Background 304L Stainless Steel

Grade 304 is the standard "18/8" stainless; it is the most versatile and most widely used stainless steel, available in a wider range of products, forms and finishes than any other. It has excellent forming and welding characteristics. The balanced austenitic structure of Grade 304 enables it to be severely deep drawn without intermediate annealing, which has made this grade dominant in the manufacture of drawn stainless parts such as sinks, hollow-ware and saucepans. For these applications it is common to use special "304DDQ" (Deep Drawing Quality) variants. Grade 304 is readily brake or roll formed into a variety of components for applications in the industrial, architectural, and transportation fields. Grade 304 also has outstanding welding characteristics. Post-weld annealing is not required when welding thin sections.

Grade 304L, the low carbon version of 304, does not require post-weld annealing and so is extensively used in heavy gauge components (over about 6mm). Grade 304H with its higher carbon content finds application at elevated temperatures. The austenitic structure also gives these grades excellent toughness, even down to cryogenic temperatures.

304L Stainless Steel Pipes and Tubes Composition
Typical compositional ranges for grade 304 stainless steels are given in table 1.

Table 1. Composition ranges for 304 grade stainless steel

304L Stainless Steel Pipes and Tubes Mechanical Properties
Typical mechanical properties for grade 304 stainless steels are given in table 2.

Table 2. Mechanical properties of 304 grade stainless steel

304L Stainless Steel Pipes and Tubes Physical Properties
Typical physical properties for annealed grade 304 stainless steels are given in table 3.

Table 3. Physical properties of 304 grade stainless steel in the annealed condition

304L Stainless Steel Pipes and Tubes Grade Specification Comparison
Approximate grade comparisons for 304 stainless steels are given in table 4.

Table 4. Grade specifications for 304 grade stainless steel

304L Stainless Steel Pipes and Tubes Corrosion Resistance

Excellent in a wide range of atmospheric environments and many corrosive media. Subject to pitting and crevice corrosion in warm chloride environments, and to stress corrosion cracking above about 60⁰C. Considered resistant to potable water with up to about 200mg/L chlorides at ambient temperatures, reducing to about 150mg/L at 60⁰C.

304L Stainless Steel Pipes and Tubes Heat Treatment

Solution Treatment (Annealing) - Heat to 1010-1120⁰C and cool rapidly. These grades cannot be hardened by thermal treatment.

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INCONEL Seamless Pipes and Tubes 600 gr. INCONEL Seamless Pipes and Tubes 601 gr. INCONEL Seamless Pipes and Tubes 617 gr INCONEL Seamless Pipes and Tubes 625 gr INCONEL Seamless Pipes and Tubes 718 gr INCONEL Seamless Pipes and Tubes 800 gr INCONEL Seamless Pipes and Tubes 800H gr INCONEL Seamless Pipes and Tubes 800HT GR INCONEL Seamless Pipes and Tubes 825 gr HASTELLOY Seamless Pipes and Tubes  GR. C-22 HASTELLOY Seamless Pipes and Tubes  GR. C-276 HASTELLOY Seamless Pipes and Tubes  GR. B-2 HASTELLOY Seamless Pipes and Tubes  GR. X NICKEL Seamless Pipes and Tubes 200 gr. NICKEL Seamless Pipes and Tubes 201 gr. MONEL Seamless Pipes and Tubes 400 gr. MONEL Seamless Pipes and Tubes 405 gr. MONEL Seamless Pipes and Tubes K500 gr Stainless steel Seamless Pipes and Tubes 304 gr. Stainless steel Seamless Pipes and Tubes 304l gr. Stainless steel Seamless Pipes and Tubes 304H gr. Stainless steel Seamless Pipes and Tubes 316 gr. Stainless steel Seamless Pipes and Tubes 316l gr. Stainless steel Seamless Pipes and Tubes 904L gr. Stainless steel Seamless Pipes and Tubes 310 gr. Stainless steel Seamless Pipes and Tubes 321 gr. Stainless steel Seamless Pipes and Tubes 347 gr. Stainless steel Seamless Pipes and Tubes 347h gr.

ALLOY STEEL Seamless Pipes and Tubes ASTM A-335, GR P-5 ALLOY STEEL Seamless Pipes and Tubes ASTM A-335, GR P-9 ALLOY STEEL Seamless Pipes and Tubes ASTM A-335, GR P-11 ALLOY STEEL Seamless Pipes and Tubes ASTM A-335, GR P-22 ALLOY STEEL Seamless Pipes and Tubes ASTM A-335, GR P-91 duplex steel 2507 gr. Seamless Pipes and Tubes   CARBON STEEL Seamless Pipes and Tubes FITTINGS ASTM A-106, GR B CARBON STEEL Seamless Pipes and Tubes FITTINGS ASTM A-333, GR 6 CARBON STEEL Seamless Pipes and Tubes FITTINGS ASTM A-53, GR B TITANIUM Seamless Pipes and Tubes IN GRADE OF 2 TITANIUM Seamless Pipes and Tubes IN GRADE OF 5 TiTANIUM Seamless Pipes and Tubes IN GRADE OF 7 Duplex Steel S32760 gr. Seamless Pipes and Tubes