ASTM A312 316L Stainless Steel Seamless Pipe
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ASTM A312 316L Stainless Steel Seamless Pipe

Overall, ASTM A312 316L stainless steel seamless pipes are widely used for their excellent corrosion resistance, high strength, and durability, making them a preferred choice in various industries.
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Product Introduction

ASTM A312 316L stainless steel seamless pipe is a high quality pipe used in a wide variety of different fields. One of the main advantages of this tube is that it has excellent corrosion resistance, which makes it ideal for use in environments that have an impact on corrosion. In addition, this tube also has extremely high temperature resistance, which makes it ideal for use in high temperature environments.

 

ASTM A312 316L seamless tubing is of high quality and it meets many different standards and requirements. For example, the tubing is compliant with ASTM A312, a standard widely used in the industry. In addition, it complies with many other national and industry standards and requirements, including ASME, DIN, EN, JIS, and more.

 

The cost of ASTM A312 316L seamless tubing is relatively high, but due to its high quality and excellent performance, it is a tubing well worth the investment. It can be used for a long time without maintenance and replacement, which makes it ideal for many companies and businesses.

SS 316L Seamless Pipe vs Stainless Steel 316L Welded Pipe

Stainless Steel 316L is a popular material choice for a wide range of applications due to its excellent corrosion resistance, high ductility, and good mechanical properties. One of the most important factors to consider when choosing the right type of pipe for your application is whether to opt for a seamless or welded option. Below, we will discuss the benefits of both SS 316L seamless pipes and stainless steel 316L welded pipes.

SS 316L Seamless Pipe:

- Seamless pipes are made by piercing a solid block of steel and drawing it out to form the desired shape without any joints or seams. This eliminates the risk of weak points and makes them more reliable and durable than welded pipes.

- The absence of welds also makes seamless pipes more aesthetically pleasing, as the surface is completely smooth and uniform. This is particularly important for applications where appearance matters, such as in the automotive, aerospace, and healthcare industries.

- Due to their manufacturing process, seamless pipes usually have tighter tolerances and higher wall thicknesses than welded pipes. This makes them more suitable for high-pressure and high-temperature applications where reliability and safety are critical.

Stainless Steel 316L Welded Pipe:

- Welded pipes are made by rolling a flat sheet of steel into a tube shape and welding the edges together. This makes them a more cost-effective option than seamless pipes, as the manufacturing process is simpler and less time-consuming.

- Welded pipes are also available in a wider range of sizes and wall thicknesses than seamless pipes, making them more versatile and adaptable to different applications.

- While welded pipes do have seams, modern welding techniques such as TIG and MIG produce strong and reliable joints that are resistant to corrosion and wear. This makes them suitable for a wide range of applications where appearance is not a priority but strength and durability are key factors.

In conclusion, both SS 316L seamless pipes and stainless steel 316L welded pipes have their own unique benefits and applications. Choosing the right type of pipe for your needs depends on a variety of factors, such as the budget, the application requirements, and any specific functional or aesthetic considerations. Ultimately, both options are excellent choices for anyone looking for a high-quality, durable, and corrosion-resistant material for their piping needs.

AISI 316L Pipe Outside Diameter

OD NOMINAL PIPE SIZE (NPS)
0.84 1/2"
1.05 3/4"
1.315 1"
1.66 1-1/4"
1.9 1-1/2"
2.375 2"
2.875 2-1/2"
3.5 3"
4 3-1/2"
4.5 4"

SUS 316L Pipe Od Tolerance

Standard Manufacturing Method Wall Thickness Tolerance OD Tolerance Others
Outer Diameter (mm) Class
EN10216-5 Hot Finished Stainless Steel 316L Seamless Pipe +22.5%T,-15%T 219.1~610 D1 T/D≤0.05
T1 T/D≤0.09
T2 T/D>0.09
T1 30~219.1 D2  
T2  
Cold Finished 316L SS Seamless Pipe T3 ≤219.1 D3  
T4 D4 Agreement
EN10297-2 Hot Finished 1.4436 Stainless Steel Seamless Pipe T1   D1  
T2 D2 Agreement
Cold Finished 316L Stainless Steel Seamless Pipe T3   D3  
T4 D4 Agreement
EN10217-7 Stainless Steel 316L Welded Pipe T3 >168.3 D2  
T3 ≤168.3 D3  
T3 D4 Agreement
EN10296-2 316L SS Welded Pipe T3 >168.3 D2  
T3 ≤168.3 D3  
T3 ≤114.3 D4 Agreement
EN10312 1.4436 Stainless Steel Welded Pipe T3 Series 1 D4 T=0.6~2 Mm
T3 – T4 Series 2 D3 – D4 T=1~

ASTM specification of Stainless Steel 316L Pipe

Stainless Steel 316L Pipe American Standard
ASTM A999
ASTM A312 / A312M ASTM A790 / A790M
ASTM A778 ASTM A928 / A928M
ASTM A409 / A409M ASTM A814 / A814M
ASTM A376 / A376M ASTM A813 / A813M

Alloy 316L Pipe Temperature Limit

Hot working: 1150-1260 °C

TP316L Pipe Thermal Conductivity

Specific Heat (0 to 100°C) J.kg-1.°K-1 500
Thermal Conductivity W.m -1.°K-1 16.3
Thermal Expansion μm/μm/°C 15.9

SS 316L Pipe Chemical Composition

Element Min Max
C - 0.035
Mn - 2
Ni 10 15
Cr 16 18
Mo 2 3
S - 0.03
Si - 1
P - 0.045

316L Pipe Mechanical Properties

Temper SS 316L Annealed Pipe 316L Cold worked Pipe(approx. 20%)
Tensile Strength Rm 70 ksi (min) 102-131 ksi (min)
Tensile Strength Rm 485 MPa (min) 700-900 MPa (min)
R.p. 0.2% Yield Strength 27 ksi (min) 73-102 ksi (min)
R.p. 0.2% Yield Strength 182 MPa (min) 500-700 MPa (min)
Elongation (2” or 4D gl) 35 % (min) 40 % (min)

SS 1.4408 Pipe equivalent grades chart

USA UNS No Old British Euronorm Swedish SS Japan JIS
BS En WNR id
316L S31603 304S11 58E 1.4436 X3CrNiMo17-13-3 2348 SUS 316L

SS316 Seamless Pipe

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