Hydraulic Tubing

Small Diameter Stainless Steel Tubing

Small Diameter Stainless Steel Tubing

DONGSHANG offer small diameter stainless steel tubing over 10 years, 300 series and duplex steel grades are available, outside diameter from 0.010” (0.25 mm) up to 1.5” (38.1mm).
ASTM A269 TP304 Stainless Steel Tubing

ASTM A269 TP304 Stainless Steel Tubing

We are a China ASTM A269 TP304 stainless steel tubing manufacturer, this specifiation covers TP304 stainless steel tubing in both welded and seanless types.
ASTM A269 TP316L Stainless Steel Tubing

ASTM A269 TP316L Stainless Steel Tubing

Dongshang Stainless offer ASTM A269 TP316L stainless steel tubing for general service, cold drawing welded and seamless process stainless steel tubing.
Medicine Capillary Tube

Stainless Steel Capillary Tube

We offer welded and seamless Stainless Steel Capillary Tube in 304 & 316L stainless steel in various dimensions,applied in medicine use.

Hydraulic tubing is a kind of tubing used in hydraulic system to transport liquid, usually it is considered as one of components installed in relative equipment, stainless steel hydraulic tubing is suitable for high pressure condition, used in many industries.

Hydraulic Tubing Sizes and Dimensions

Tubing is in a wide variety of sizes, minimum outside diameter and wall thickness are 3.0 mm and 0.3 mm respectively, tubing length can be straight, also in coiled condition, short length can be cut for structural purpose, they are bendable when required, inch sizes are following.

  • Outside diameter: 0.125 inch – 5 inch
  • Wall thickness: 0.012 inch – 0.25 inch

Stainless Steel Grades

Stainless steel material have good properties to resist corrosion and high temperature, after annealing condition, it is easy to fabricate to achieve the condition required。

There are a large varieties of stainless steel grades selected to use in harsh environment, typical grades are listed, depending on unique application, other grades are available。

  • TP304/340L, UNS S30403/S30400, ASTM A269
  • TP316L, UNS S31603, ASTM A269
  • TP321, UNS S32100, ASTM A269
  • UNS S31803/S32205, ASTM A789
  • 904L, UNS N08904, ASTM A269
  • 254 SMO, UNS S31254, ASTM A213

Conditions and Surface

Commonly, hydraulic instrumentation tubing is annealed conform to standard solution temperature, then having pickling passivative surface, deburring tubing ends to insert in fittings.

Tubing surface should be free of scale and clean。 In some cases, to achieve higher clean and smooth surface, bright annealing is required, both in seamless tubing and welded tubing。

Tolerance and Accuracy

Hydraulic instrumentation tubing should be in close and tight dimensional tolerances reducing the risk of leakages, when tubing is bent, tolerances are controlled strictly to connect pipe fittings tightly。