Seamless Stainless Steel Tubing | China Manufacturer & Supplier

Younglee Precision Tubes manufactures and supplies high quality seamless stainless steel tubing per specification ASTM A 213, ASTM A 269, ASTM A 270 and ASTM A 511, EN 10216-5, We supply common material of stainless steel like 304/304L and 316/316L, also have 316Ti, 904L, uns s32750, duplex 2205 tube. We produce tubes per standard inch tube sizes and wall thicknesses, metric tube sizes and wall thicknesses .Our stainless steel tubing are widely used in hydraulic/chemical/oil&gas application.

Reading to know the material/specifications/size chart/tolerances/prices/pressure rating of seamless stainless steel tubing, also the packing and our best service.

Don’t hesitate to contact us to get a best quotation for your reuqirement.

Material of seamless stainless steel tubing available

Common grade of stainless steel like 304/304L, 316/316L are available, also 304/L/N, 316/L/N, 317/L, 321, 347, 310/310H/310S,  also for Duplex/Super Duplex 2101, 2205, 2507,904L, and Nickel material Alloy 200, 400, 600, 625, 825, C-276; Monel alloy 400; Inconel 600, Inconel 625;Hastelloy C-276. 

  • 316 stainless steel tubing / 316L stainless steel tubing (pipes, tubes)
  • 304 stainless steel tubing / 304L stainless steel tubing (pipes, tubes)
  • 321 stainless steel tubing / 321H stainless steel tubing (pipes, tubes)
  • 310 stainless steel tubing / 310s stainless steel tubing (pipes, tubes)
  • 316Ti stainless steel pipe / 316Ti stainless steel tubing (pipes, tubes)
  • 310/310H/310S stainless steel tubing  (pipes, tubes)
  • Duplex stainless steel pipe / tube

Below is a common material chemical composition according to ASTM A 269 / A 213 / A312, click ASTM INTERNATIONAL for more details.

material of stainless steel-chemical composition
 material of stainless steel-chemical composition



Sizes chart of seamless stainless steel tubing available

Outside diameter range: OD: 0.125” – 4.00” (3.175mm – 101.6mm)

Wall thickness range:Wall: 0.016” – 0.200” (0.406mm – 5.08mm)

Other dimensions + grades on request, duplex and super duplex stainless steel grade available

Seamless stainless steel tubing size chart pdf(click to view size chart)


Seamless Stainless Steel Tubing Tolerances


ASTM A269 Seamless and Welded Austenitic Stainless Steel Tubing forGeneral Service Tolerance

in. [mm]
Permissible Variations in
Outside Diameter,
in. (mm)
Permissible Variations in
Wall Thickness,*A
Permissible Variations in
Cut Length,in. [mm]*B
Thin Walled Tubes
1Up to 1⁄2 [13]±0.005 [0.13]±151⁄8 [3.2]0 
21⁄2 to 11⁄2
[13 to 38], excl
±0.005 [0.13]±101⁄8 [3.2]0less than 0.065 in. [1.65 mm] nominal
311⁄2 to 31⁄2
[38 to 89], excl
±0.010 [0.25]±103⁄16 [4.8]0less than 0.095 in. [2.41 mm] nominal
431⁄2 to 51⁄2
[89 to 140], excl
±0.015 [0.38]±103⁄16 [4.8]0less than 0.150 in. [3.81 mm] nominal
551⁄2 to 8
[140 to 203], excl
±0.030 [0.76]±103⁄16 [4.8]0less than 0.150 in. [3.81 mm] nominal
68 to 12
[203 to 305], excl
±0.040 [1.01]±103⁄16 [4.8]0less than 0.200 in. [5.08 mm] nominal
712 to 14
[305 to 356], excl
±0.050 [1.26]±103⁄16 [4.8]0less than 0.200 in. [5.08 mm] nominal

A When tubes as ordered require wall thicknesses 3⁄4 in. [19.0 mm] or over, or an inside diameter 60 % or less of the outside diameter, a wider variation in wall thickness is required. On such sizes a variation in wall thickness of 12.5 % over or under will be permitted. For tubes less than 1⁄2 in. [12.7 mm] in inside diameter which cannot be successfully drawn over a mandrel, the wall thickness may vary ±15 % from that specified.
B These tolerances apply to cut lengths up to and including 24 ft [7.3 m]. For lengths greater than 24 ft [7.3 m], the above over tolerances shall be increased by 1⁄8 in. [3mm] for each 10 ft [3 m] or fraction thereof over 24 ft [7.3 m], or 1⁄2 in. [13 mm], whichever is lesser.

Production standards / Specification available 

  • EN 10216-5, DIN 17458
  • ASTM A312 / A312M, ASTM A213 / A213M ASTM A632/A632M
  • ASTM A269 / ASTM A789 / A789M / ASTM A790 / A790M
  • ASME SA312 / SA312M, ASME SA213 / SA213M
  • ASME SA789 / SA789M, ASME SA790 / SA790M
  • ASTM A312 is Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes; 
  • ASTM A 269 is Standard Specification for Seamless and Welded Austenitic Stainless Steel Tubing for General Service; 
  • ASTM A 213 is Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes

For many of the application like hydraulic tubing ,heat exchanger tubing, instrumention tubing etc, normally customers will choose ASTM A269/ ASTM A213 /ASTM A 312 production standards, w we can also produce tubes & pipes as per other specification according to customers requirement.

Seamless stainless stainless steel tubing  application

Seamless stainless stainless steel tubing are available in varieties of high-performance, corrosion-resistant types and sizes, it provides a high level of strength and corrosion resistance for applications, it has a wide application on industries of petrochemical, gas, chemical, food, semiconductor, nuclear, shipbuilding etc. Younglee provide a wide range tubing for varieties application,checking below tubing and contact us to get your quoation.

  • Instrument tubing
  • Hydraulic tubing
  • High purity tubing
  • Heat exchange tubing
  • Control lines tubing
  • Chemical injection tubing
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