Prosaic Steel and Alloys India Manufacturer & Fabricator, Importer, Stockholder, ASTM A312 TP 304 / 304L Stainless Steel Seamless Pipes and Tubes, premier suppliers of bulk ASTM A312 TP 304 / 304L Stainless Steel Seamless Pipes and Tubes. We Stock & Supply worldwide. Fast delivery guaranteed for every size ASTM A312 TP 304 / 304L Stainless Steel Seamless Pipes and Tubes, largest range of ASTM A312 TP 304 / 304L Stainless Steel Seamless Pipes and Tubes Suppliers in India.
ASTM A312 TP 304 / 304L Stainless Steel Seamless Pipes Grade of the most versatile and commonly used stainless steels on the market, Grade 304 stainless steel is the most standard used alloy of this type. Essentially,
Grade 304 is an austenitic chromium alloy which is also known as an "18/8" stainless as the make-up of the steel is 18% chromium and 8% nickel.
The chromium content promotes the material's considerable resistance to the effects of corrosion and oxidation. The stainless steel alloy resists most oxidizing acids and will withstand ordinary rusting though this does
not mean that the steel will not tarnish over time. The steel needs to be cold worked to generate higher tensile strength. For stainless steel sections which are welded heavily, post-weld annealing may be necessary to
provide maximum corrosive resistance.
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).
As a result, Type 304L stainless steel is a sort after material for use in severely corrosive conditions. Weld annealing is only necessary in applications where stress loads are excessive.
This steel Grade is found in a variety of commercial sectors, particularly in the chemical industry.
ASTM A312 TP 304 / 304L Stainless Steel Seamless Pipes and Tubes Product Range
Specifications: ASTM A/ASME SA213/A249/A269/A312/A358 CL. I to V ASTM A789/A790 Pipes and Tubess Sizes (Seamless): 1/2" NB - 16" NB Pipes and Tubes Sizes (ERW): 1/2" NB - 24" NB Pipes and Tubes Sizes (EFW): 6" NB - 100" NB
Pipes and Tubes Wall Thickness available:
Schedule 5S - Schedule XXS (heavier on request) Pipe and Tubes Other Materials Testing:
NACE MR0175, H2 SERVICE, OXYGEN SERVICE, CRYO SERVICE, etc.
All Pipe is manufactured and inspected/tested to the relevant standards including ASTM, ASME and API etc.
Type 304 Stainless Steel has excellent welding and deep drawing characteristics - it is easy to fabricate, easy to clean and aesthetically pleasing to the eye.
Applications of Grade 304 Stainless Steel
The steel is common throughout industry particularly in food processing as the material is not susceptible to corrosion from acids found in common foodstuffs. As a consequence, such steel is ideal for items such as sinks,
work surfaces, preparation areas and refrigerators. It is also a perfect material for use in the pharmaceutical industry for environments such as clean rooms.
Grade 304 can also be found in heat exchangers, chemical containers, pipelines and throughout the brewing industry. It can be used as a fabricated material where high temperature petroleum gases or steam production gases
are stored such as pressure vessels. It can even be found extensively in the construction industry where the material is used for cosmetic purposes such as building fascias.
304 & 304L plate and Pipe 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. ASTM A312 TP 304 / 304L Stainless Steel Seamless 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
Approximate grade comparisons for 304 stainless steels are given in table 4.
Table 4. Grade specifications for 304 grade stainless steel
These comparisons are approximate only. The list is intended as a comparison of functionally similar materials not as a schedule of contractual equivalents. If exact equivalents are needed original specifications must be consulted.
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.
Good oxidation resistance in intermittent service to 8700C and in continuous service to 9250C. Continuous use of 304 in the 425-8600C range is not recommended if subsequent aqueous corrosion resistance is important. Grade
304L is more resistant to carbide precipitation and can be heated into the above temperature range.
Grade 304H has higher strength at elevated temperatures so is often used for structural and pressure-containing applications at temperatures above about 5000C and up to about 8000C. 304H will become sensitised in the
temperature range of 425-8600C; this is not a problem for high temperature applications, but will result in reduced aqueous corrosion resistance.
ASTM A312 TP 304 / 304L Stainless Steel Seamless Pipes and Tubes Heat Treatment
Solution Treatment (Annealing) - Heat to 1010-11200C and cool rapidly. These grades cannot be hardened by thermal treatment.
ASTM A312 TP 304 / 304L Stainless Steel Seamless Pipes and Tubes Packing ASTM A312 TP 304 / 304L Stainless Steel Seamless Pipes and Tubesis sleeved into plastic bag individually, pieces wrapped with water-proof material, bundled with nylon rope. Clear labels are tagged on the
outside of the package for easy identification of the quantity and product I.D. Great care is taken during operation and transportation.
SS 304 ASTM A312 TP 304 / 304L Stainless Steel Seamless Pipes and Tubes packing will be according to international standard in bundles strapped by strips then into containers to avoid any damage.
Delivery: Within 10-25 days or asap if we have enough stock
Types of Packaging:
- Bundles (hexagonal)
- Wooden Boxes
- Crates (steel/wooden)
- Special crates for U-Bend tubes with each radius separated
- Packaging for SS 304/304L ASTM A312 Seamless Pipe as per customer's requirements
- Each bundle covered with plastic for protection against extreme weather.
- End of SS 304 ASTM A312 Seamless Pipe protected by plastic caps.
- Bundles strapped with plastic strips.
- Each radius of U-Bend tube separated by a separator.
- Packaging list (laminated) placed with box/crate.
Types Of ASTM A312 TP 304 / 304L Stainless Steel Seamless Pipes and Tubes :