

Add to Cart
ASTM A312 304/L 1/2" SMLS Pipe SCH 80S 6M Seamless Stainless Steel
Pipe
Seamless Stainless Steel Pipe Information
ASTM A312 is a specification from the American Society for Testing
and Materials (ASTM) that outlines the requirements for seamless,
welded, and heavily cold worked austenitic stainless steel pipes.
In your specific case, "304/L" refers to the grade of stainless
steel, and "1/2" SMLS" indicates a 1/2-inch size seamless pipe.
Standardized Dimensions and Tolerances: ASTM A312 provides
standardized dimensions and tolerances for stainless steel pipes.
This ensures consistency and interchangeability of pipes produced
by different manufacturers, facilitating easier integration into
systems and compatibility with fittings and other components.
Grade 304/L: The "304" grade stainless steel is a widely used austenitic stainless steel alloy. It contains a composition of 18% chromium and 8% nickel, which provides excellent corrosion resistance, high-temperature strength, and good formability. The "L" designation indicates that the material has a lower carbon content, which helps to minimize sensitization and improve weldability.
ASTM A312 is a widely recognized specification for seamless, welded, and heavily cold worked austenitic stainless steel pipes. It covers various grades of stainless steel and specifies dimensions, mechanical properties, testing requirements, and acceptable manufacturing practices.
Product Name | ASTM A312 304/L 1/2" SMLS Pipe SCH 80S 6M Seamless Stainless Steel Pipe |
Standards | ASTM A312 304/L |
Outer Diameter | 1/2” |
Wall Thickness | Sch80S |
Length | 6m |
End Process | Plain Ends, Beveled Ends, Threaded Ends |
Origin | China |
STAINLESS STEEL PIPES | |||||||
ASTM A213; ASTM A269;ASTM A312;ASTM A789; ASTM A790; EN10216-5; JIS 3463; JIS 3459; |
SIZE AVAILABLE |
SIZE RANGE | OD | WALL THICKNESS | LENGTH | SURFACE | |
SEAMLESS | 1/2"--18" | UP TO 20mm | FIXED / RANDOM | PICKLING & PASSIVATION | BRIGHT ANNEALED |
WELDED | 3/4"--36" | UP TO 36mm | |||
TESTING & INSPECTION | |||||
NDT TESTING | MECHANICAO TESTING | CHEMICAL ANALYSIS | SPECTRUM ANALYSIS | SIZE INSPECTION | SURFACE INSPECTION |
UT; RT; EDDY CURRENT | TENSION/TENSILE; IMPACT; HARDNESS; HYDRAULIC | METALLOGRAPHIC; LOW TEMPERATURE | SPECTROMETER | CALIPER; GAUGE | VISUALIZATION |
APPLICATION | |||||
PETRO CHEMICAL INDUSTRY | HEAT EXCHANGE | AERO SPACE | PHARMACEUTICAL EQUIPMENTS | BOILER | NUCLEAR |
MATERIAL AVAILABLE | |||||||
304/L | 310/S | 316/L | 317/L | 321/H | 347/H | 316 Ti | 904L/N08904 |
1.4301 / 1.4307 | 1.4845 | 1.4401 /1.4404 | 1.4439 | 1.4541 | 1.4550 | 1.4571 | 1.4539 |
S31803/F51 | S32750/F53 | S32750/F55 | S31254/F44 | ||||
1.4462 | 1.441 | 1.4501 | 1.4547 |
Faqs
Q1. What is the difference between seamless stainless steel pipes
and welded stainless steel pipes?
Seamless stainless steel pipes are manufactured without any welding
seams, while welded stainless steel pipes are made by joining
stainless steel plates or coils together using various welding
techniques. Seamless pipes offer better strength, corrosion
resistance, and pressure containment, while welded pipes are
generally more cost-effective and suitable for less demanding
applications.
Q2. What are the advantages of using seamless stainless steel
pipes?
Seamless stainless steel pipes offer several advantages, including:
Stronger and more reliable due to the absence of welding seams.
Better corrosion resistance due to the smooth internal surface.
Ability to handle higher pressure and temperature conditions.
Enhanced aesthetics with a clean and smooth appearance.
Improved flow characteristics due to the absence of internal
obstructions.
Q3. What are the common grades of seamless stainless steel pipes?
Common grades of seamless stainless steel pipes include 304/304L,
316/316L, 321, and 904L. These grades offer varying levels of
corrosion resistance, mechanical properties, and temperature
resistance. The selection of the grade depends on the specific
application and environmental conditions.
Q4. What industries use seamless stainless steel pipes?
Seamless stainless steel pipes find applications in a wide range of
industries, including oil and gas, petrochemical, power generation,
pharmaceuticals, food and beverage, water treatment, aerospace,
automotive, and architectural sectors. They are commonly used for
conveying fluids, gases, and corrosive materials in various
processes.
Q5. What are the available sizes for seamless stainless steel
pipes?
Seamless stainless steel pipes are available in a broad range of
sizes, typically specified using the nominal pipe size (NPS) and
the schedule, which indicates the wall thickness. Common NPS sizes
range from ⅛ inch to 48 inches or more, and different schedule
numbers represent varying wall thicknesses.