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Stainless Steel Tubing

More than 20 years to manufacture and supply stainless steel tubing comply with ASTM A213/A269, ASTM A312, ASTM A789, EN 10216-5, DIN 17456, 17458 etc, dimension from 6mm to 204mm.

  • Stainless Steel 304/304L, 316/316L, 321, 316Ti, 317L, 347H, 904L, 254 SMO
  • Duplex 2205, Super Duplex 2507
  • Alloy Monel 400, Inconel 600, 625, Incoloy 800H, 825, Hastelloy C276, C22

Stainless Steel Tubing

Kaysuns is a professional supplier of stainless steel tubing in China, we provides both stainless steel seamless tubing and stainless steel welded tubing. Our product covers full 300 series such as 304/ 304L, 316/ 316L, 310S, 316Ti, 317L, 347H and duplex SS 2205 and super duplex 2507, nickel-based alloy Monel 400, Hastelloy C276, Inconel 625, Incoloy 825, super austenitic stainless steel 254 SMO (S31254), 904L etc. We are also ability to supply titanium alloy tube and copper alloy tubes in ASME / EN norms. All of our tubings are qualified, as well as third party inspection are available for all of our tubes.

About the Surface of Stainless Steel Tubing

Pickled Surface Stainless Steel Tube (Mill Finish)

The mill finish of stainless stee tubings is pickled surface. The tubes will be pickled and passivated after solution annealing, then it will get a passivation coating to improve the performance of corrosion resistance. If there is no specific requirement on the surface, the tube will be mill finish.

Polished Stainless Steel Tube

The polished is mechanical polishing here, including internal surface and external surface. The roughness can be min. 0.4 µm (16 µin) or Grit 300 from polishing. Mechanical polishing uses a fully automatic polishing machine to control the surface accuracy and roughness to meet the needs of food grade and bioengineering.

Bright Annealing / BA Tube

BA tube is stainless steel tube with bright annealing, a heat treatment process that is different from ordinary solution annealing of stainless steel, and can obtain a better precision and surface roughness. The BA tube does not need to be pickled again, and its roughness can meet the precision requirements of polishing, but the cost is higher than mechanical polishing stainless steel tubes.

Electropolishing / EP Tube

Stainless steel EP tube is high purity and high-precision tube, which is mainly used in demanding environments such as bioengineering, semiconductors, laboratories, and precision instruments. Our EP pipe can reach a roughness of 0.2 on the inner surface to meet the stringent requirements of various working conditions.



The Manfacturing Process of Stainless Steel Tubing

  • Cold Rolling is a preferred production process for high precision seamless tubing.  Most of our stainless steel tubing and mechanical tubes are made by cold rolling. This technique provides a high forming rate, narrow tolerances and good turnouts. Now the biggest diameter we can get is 219 mm for this process.
  • Cold drawing is the general process for our stainless steel tube and pipe. seamless pipe and tubes from this process can be got a a very narrow tolerance ranges, and keep the chemical element well. Additionally, the cold drawing process is the perfect choice for situations which place high requirements on the quality of the surface structure.

Materials of Stainless Steel Tubing

Material Grade
Stainless Steel TP304, 304L, 304H, 316, 316L, 316H, 316Ti, 317, 317L, 310S, 310H, 347, 347H, 321, 321H, 904L, S31254 (mat.1.4301, 1.4307, 1.4948, 1.4401, 1.4404, 1.4571, 1.4438, 1.4833, 1.4841, 1.4845, 1.4845, 1.4450, 1.4541,1.4878, 1.4539 , 1.4547/254 SMO) etc.
Duplex & Super Duplex Steel UNS S31803 , S32205, S32750,S32760,S32304 (Mat.1.4462,1.4410,1.4501,1.4362)etc.
Nickel Alloy Monel 400, Inconel 600, Inconel 625, Incoloy 800, Incoloy 800H, Incoloy 825, Hastelloy B2, Hastelloy C-22, Hastelloy C-276, 15-5PH, 17-7PH, Cu/Ni 70/30(C71500/B30), Cu/Ni 90/10(C70600/B10) etc.

(*If your required is not found here, please make a special inquiry immediately.)

Stainless Steel Tube Dimensions

Materials Dimension/OD Dimension/Wall thickness
Stainless Steel TP304L, 316L, 310S, 317L, 321, 347H etc. 6mm ~ 204mm 0.4mm ~ 16mm
Super Stainless Steel 904L, 254 SMO 6mm ~ 204mm 1.2mm ~ 16mm
Duplex 2205, 2507 6mm ~ 204mm 1.2mm ~ 16mm
Nickel-based Alloy 6mm ~ 204mm 1.2mm ~ 16mm


*The stainless steel tubing dimension is for seamless tubing only, please click here if you have any requirement for stainless steel welded tubings.

**The dimension is for currently equipment. We may update the equipment and extend the supplying range without notice. Please contact us if you couldn’t find your specification here.

Specification & Manufacturing Standard:

ASTM A269, A213, ASTM A249, ASTM A789

ASTM SB677, SB163, SB622, SB729, SB161

ASTM SB111, ASTM B338, SB359

EN 10216-5

DIN 17456, DIN 17458, DIN 17459 etc.


  • Full grades of austenitic stainless steel, duplex stainless steel and nickel-based alloy
  • Ultra long ss tube up to 22 meters
  • Small order quantity available from 200kgs
  • More than 15 years manufacturing experiences of stainless steel tubings
  • Good supplying experiences for ASTM A213, A269 tubes
  • Fast delivery of 20~40days for general grades
  • Flexible and professional service and operations
  • Both seamless and welded pipe are available
  • Perfect inspection system – 100% NDT test, mechanical propertis test, MPI test
  • Accept any third party inspection from such SGS, TUV, DNV, InterTek, Lloyd’s, BV, ABS etc.
  • Full supplying of stainless steel piping – stainless steel pipes, pipe fittings, flanges, sheet etc.

22 Meters Ultra Long 25.4 x 2.11 Stainless Steel Tubing ASTM A213 TP304L

About Our Factory

Our factory is an ISO9001 certified manufacturer which located in the Stainless Steel Industrial Park of Lishui Zhejiang – a very important manfaucturing base of stainless steel tubings in China. The production area covers an area of about 35000 m², and the workshop is more than 15000 m². As a professional manufacturer, our factory has more than 20 years manufacturing experiences for stainless steel tubings and stainless steel seamless pipes. Nowadays, our factory has more than 80 workers and staffs, about 18 sets cold drawing and cold rolling equipments, the capacity is about 600 tons of stainless steel seamless tubings each month. Our factory has a full set NDT equipments which including Eddy Current Test equiment, Ultrasonic Test equiment, Hydrostatic Test machine etc. 100% quality passing percentage is our principle.


Stainless Steel Tubing Catalogue


Stainless Steel tubing is used for incredibly diverse applications. Industries which rely on stainless steel tubing and piping include the automotive, pulp/papermaking, dental, medical, solar, construction, industrial, petrochemical, and semiconductor industries. Applications within these various industries include engine conduits and fuel lines, hydraulic systems, stainless steel hoses, dental implants, braces, medical instruments, gas heating systems, and temporary structural support etc.

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