Stainless Steel Pipe

Stainless steel pipes

Stainless steel pipes are used mainly for industrial use, plants, sanitation, heat exchangers, and machine structures.

Stainless steel pipe is one of the more standardized materials in the building and engineering industries. Stainless Steel Seamless Pipes is a hollow steel bar, a large number of pipes used for conveying fluids, such as oil, gas, water, gas, steam,heat exchanger,mechanical machine.

Welded Stainless steel pipe

In addition, engaging in bending, torsional strength of the same, lighter, and they are also widely used in the manufacture of mechanical parts and engineering structures.

Steel pipes are long, hollow tubes that are used for a variety of purposes. They are produced by two distinct methods which result in either a welded or seamless pipe. Industrial Metal Supply carries a wide variety of stainless steel pipe products.

U-tube heat exchanger

Stainless Steel Pipe Applications 

Stainless steel pipe has a wide variety of applications, some of the most prevalent include: 

Also used in producing all kinds of conventional weapons, the barrel, artillery shells and so on...


Material stainless steel grades:

Also known as "marine grade" stainless steel due to its increased ability to resist saltwater corrosion compared to type 304. SS316 is often used for building nuclear reprocessing plants.

See the full data for Stainless steel pipes

Normal Standard

Item ASTM A213/A213M ASTM A312/A312M
Grade TP304 TP304L TP304 TP304L
TP316 TP316L TP316 TP316L
TP317 TP317L TP317 TP317L
TP347 TP310S TP347 TP310S
TP309H* TP310H* TP317* TP310H*
  TP321HΔ   TP321HΔ
Yield Strength
σ0.2 (Mpa)
≥170; ≥205 ≥170; ≥205
Tensile Strength
σb (Mpa)
≥485 ≥515 ≥485; ≥515
Elongation %
≥35 ≥35 ≥35 ≥35
Flattening Test H=1.09t/(0.09+t/D) H=1.09t/(0.09+t/D)
Flange Test 21-68%  
Intergranular corrosion
"*""Δ" ASTM E112
"Δ" min 7#, "*" min 6#
"*"﹑"Δ"ASTM E112, min 6#
Hydraulic test(Mpa) D P max P=220.6t/D D P max ASTM A530/A530M
D≤270MM P=2Rt/D
R=50%σ0.2
<25.4 7 ≤88.9 17
25.4-<38.1 10
38.1-<50.8 14 >88.9 19
50.8-<76.2 17
76.2-<127 24
≥127 31
Metallograph Analysis STM A262 E ASTM A262 E
Non-Destructive Test ASTM E213 E309 E426 ASTM E213 E309 E426
Hardness HRB<90 RB<90

Chemical composition

Grade Chemical Composition
C (max) Si (max) Mn (max) P (max) S (max) Ni Cr Mo Other
TP 304 0.08 0.75 2 0.04 0.03 8-11 18-20
TP 304H 0.04-0.10 0.75 2 0.04 0.03 8-11 18-20
TP 304L 0.035 0.75 2 0.04 0.03 8-13 18-20

TP 309S

0.08 0.75 2 0.04 0.03 8-13 18-20
TP 310S 0.08 0.75 2 0.045 0.03 12-15 22-24
TP 316 0.08 0.75 2 0.04 0.03 19-22 24-26
TP 316L 0.035 0.75 2 0.04 0.03 10-15 16-18
TP 316Ti 0.08 0.75 2 0.04 0.03 11-14 16-18
TP 317 0.08 0.75 2 0.04 0.03 11-14 16-18
TP 321 0.08 0.75 2 0.04 0.03 9-13 18-20
TP 321H 0.04-0.10 0.75 2 0.04 0.03 9-13 17-20
TP 347 0.08 0.75 2 0.04 0.03 9-13 17-20
TP 347H 0.04-0.10 0.75 2 0.04 0.03 9-13 17-20

Tolerance grade

Grade Outside diameter tolerance Grade Wall thickness tolerance
D1 ±1.50% but at least ±0.75mm T1 ±15% but at least ±0.60mm
D2 ±1.00% but at least ±0.50mm T2 ±12.5% but at least ±0.40mm
D3 ±0.75% but at least ±0.30mm T3 ±7.5% but at least ±0.15mm
D4 ±0.50% but at least ±0.10mm T4 ±5.0% but at least ±0.10mm

Tolerance standard

Item ASTM A213 ASTM A312 ASTM A269
O.D. tolerance O.D. tolerance O.D. tolerance
Outside diameter tolerance(mm) <25.4 ±0.10 10.3-48.3 +0.4/-0.8 12.7 < +0.13/-0.13
25.4-≤38.1 ±0.15 >48.3-114.3 +0.8/-0.8 12.7-38.1 +0.13/-0.13
>38.1-<50.8 ±0.20 >114.3-219.1 +1.6/-0.8 38.1-88.9 +0.25/-0.25
50.8-<63.5 ±0.25 >219.1-457.2 +2.4/-0.8 88.9-139.7 +0.38/-0.38
63.5-<76.2 ±0.30 >457.2-660.4 +3.2/-0.8 139.7-203.2 +0.76/-0.76
76.2-≤101.6 ±0.38 >660.4-864 +4/-0.8    
>101.6-≤190.5 ±0.38/-0.64 >864-1219.2 +4.8/-0.8    
>190.5-≤228.6 ±0.38/-1.14        
Thickness 
tolerance(mm)
O.D. tolerance ±12.5%t O.D. tolerance
≤38.1 +20%t/0 ≤38.1 ±15%t
>38.1 +22%t/0 >38.1 ±10%t

The Test Requirements of Standards

Standard Chemical Composition Tensile Strength Yeild Point Tension Test Rockwell Hardness Flattening Test Flaring Test Hydrostatic
ASTM A312 X X X X X
ASTM A213 X X X X X X X X
ASTM A269 X X
ASTM A511 X X X X
ASTM A789 X X X X

Standard Ultrasonic Eddy Current Intergranular Corrosion Grain size α/γ Surface Quality Tolerance
ASTM A312 X X X
ASTM A213 X X X
ASTM A269 X X X
ASTM A511 X X
ASTM A789 X X X X

ASTM Mechanical Properties

Grade Tensile Strength
Min(Mpa)
Yeild Point
Min(Mpa)
EL. Min(%) Rockwell
Max
TP 304 515 205 35 90
TP 304H 550 240 35 90
TP 304L 485 170 35 90
TP 309S 515 205 35 90
TP 310S 515 205 35 90
TP 316 515 205 35 90
TP 316L 485 170 35 90
TP 316Ti 515 205 35 90
TP 317 515 205 35 90
TP 321 515 205 35 90
TP 321H 515 205 35 90
TP 347 515 205 35 90
TP 347H 515 205 35 90
Delivery requirment:
Capped end stainless steel tube
Capped end stainless steel tube
Tubes putted in wooden boxes
Tubes putted in wooden boxes
Stainless Steel Seamless Pipes
the wooden boxes packing for stainless products
Stainless Steel Seamless Pipes
Warehouse
  • Marking: SunnySteel, material grade, standard, specification, heat no.
  • Surface Treatment: Bright annealed, polished outside and inside surface.
  • Package: knitting strip bundle, wooden box or steel box
  • Mill test certificate: according to EN 10204 3.2
  • Inspection: Third party inspection, or by clints

Pipe size range:

  • Outside diameter: range from 6mm to 530mm.
  • Wall thickness: SCH5S, SCH10S, SCH40S, SCH80S, SCH 120S
  • Legnth: unbending length or fix length
Range of Application

Stainless steel pipe (tube) has excellent characteristics of corrosion resistance and smooth finishing. Stainless steel pipe (tube) is commonly used in demanding equipment like automobiles, food processing, water treatment facilities, oil and gas processing, refinery and petrochemicals, breweries and energy industries.

The stainless steel tubing that is supplied by SunnySteel can used in a variety of industries, including:

  • Machinery Parts
  • Pharmaceutical
  • Biotechnology
  • Automotive
  • Oil and Gas
  • Marine
  • Food and Beverage Processing
  • Construction
  • Automotive industries
  • Food processing
  • Water treatment facilities
  • Breweries and energy industries

Considering the importance of outside and inside surface of stainless steel tubes for fluid power industry, Our mills are providing tubes that are free from scale, rust, seams, laps.



About Sunny Steel

Our team are highly trained and experienced in servicing and producing all types of steel supplies. Whether you've got a large construction project, or need parts for industrial machinery, our team of steel fabrication consultants will ensure that your project is provided with the parts you need, when you need them.

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