316L Stainless Steel Seamless Pipes & Tubes

 

The grade 316L stainless steel is a material that is widely used in more aggressive environments compared to ordinary 304-grade steel. The Stainless Steel 316L Pipe/ Tube is primarily used for seamless pressure operations in highly corrosive environments, like acid processing and waste treatment plants. The Stainless Steel 316L Pipe is also abundantly used in salt and marine applications. We design Stainless Steel 316L Seamless Pipe as per the industry standards and use pure raw materials of international standards. Due to more carbon in the alloy, the Stainless Steel 316L Tube comes with decreased weldability. They are used in various industries, including constructions, cement, petrochemicals, sugar mills, etc..

We might have just the right solution available for you. The Stainless Steel 316L Pipe produced by us has a low carbon content that is indicated by the letter ‘L’ surfixed to it. Stainless Steel 316L Pipe has an austenitic structure. This is the reason the 1.4404 SS 316L Seamless Pipe displays excellent toughness even in cryogenic temperature. SS 316L Pipe is supplied in polished girt 600-1200 that is suitable for architectural application. Apart from this SS grade 1.4404 Pipes are also available in abrasive polished finish. 316L SS ERW Pipe is available in the size range of ½ inches to 8 inches.

316L Stainless Steel Pipes and Tubes Product Range
316L Stainless Steel Pipes and Tubes Specifications: ASTM A/ASME SA213/A249/A269/A312/A358 CL. I to V ASTM A789/A790
316L Stainless Steel Pipes and Tubes Sizes (Seamless): 1/2” NB - 16” NB
316L Stainless Steel Pipes and Tubes Sizes (ERW): 1/2” NB - 24” NB
316L Stainless Steel Pipes and Tubes Sizes (EFW): 6” NB - 100” NB

316L Stainless Steel Pipes and Tubes Wall Thickness available:
Schedule 5S - Schedule XXS (heavier on request)

316L Stainless Steel Pipes and Tubes Other Materials Testing:

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

316L Stainless Steel Pipes and Tubes Dimensions:
All Pipes is manufactured and inspected/tested to the relevant standards including ASTM, ASME and API etc.


Type 316L 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 316L 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 316L 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.

316L plate 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 316LH cannot be included in this equation due to the steel's higher carbon content which is intended for use in elevated temperature applications.


316L Stainless Steel Pipes and Tubes Composition

Typical compositional ranges for grade 316L stainless steels are given in table 1.

Table 1. Composition ranges for 316L grade stainless steel


Grade C Mn Si P S Cr Mo Ni N
316L min. - - - - - 18.0 - 8.0 -
max. 0.08 2.0 0.75 0.045 0.030 20.0 10.5 0.10
316L min. - - - - - 18.0 - 8.0 -
max. 0.030 2.0 0.75 0.045 0.030 20.0 12.0 0.10
316LH min. 0.04 - - - - 18.0 - 8.0 -
max. 0.10 2.0 0.75 0.045 0.030 20.0 10.5


316L Stainless Steel Pipes and Tubes Mechanical Properties

Typical mechanical properties for grade 316L stainless steels are given in table 2.

Table 2. Mechanical properties of 316L grade stainless steel

Grade Tensile Strength
(MPa) min
YieldStrength
0.2% Proof (MPa) min
Elongation
(%in 50mm) min
Hardness
Rockwell B (HR B) max Brinell (HB) max
316L 515 205 40 92 201
316L 485 170 40 92 201
316LH 515 205 40 92 201
316LH also has a requirement for a grain size of ASTM No 7 or coarser.


316L Stainless Steel Pipes and Tubes Physical Properties

Typical physical properties for annealed grade 316L stainless steels are given in table 3.

Table 3.
Physical properties of 316L grade stainless steel in the annealed condition

Grade Density (kg/m3) Elastic Modulus (GPa) Mean Coefficient of Thermal Expansion (m/m/0C) Thermal Conductivity (W/m.K) Specific Heat 0-1000C (J/kg.K) Electrical Resistivity (n.m)
0-1000C 0-3150C 0-5380C at 1000C at 5000C
316L/L/H 8000 193 17.2 17.8 18.4 16.2 21.5 500 720


316L Stainless Steel Pipes and Tubes Grade Specification Comparison

Approximate grade comparisons for 316L stainless steels are given in table 4.

Table 4. Grade specifications for 316L grade stainless steel

Grade UNS No Old British Euronorm Swedish SS Japanese JIS
BS En No Name
316L S316L00 316LS31 58E 1.4301 X5CrNi18-10 2332 SUS 316L
316L S316L03 316LS11 - 1.4306 X2CrNi19-11 2352 SUS 316L
316LH S316L09 316LS51 - 1.4948 X6CrNi18-11 - -
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.


316L 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.


316L Stainless Steel Pipes and Tubes Heat Resistance

Good oxidation resistance in intermittent service to 8700C and in continuous service to 9250C. Continuous use of 316L in the 425-8600C range is not recommended if subsequent aqueous corrosion resistance is important. Grade 316L is more resistant to carbide precipitation and can be heated into the above temperature range.

Grade 316LH 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. 316LH 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.

316L Stainless Steel Pipes and Tubes Heat Treatment

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