ASTM A269 316L Seamless Steel Tube Cold Drawn for Hydraulic System

Product Name: Polished Seamless Tube
Material: Stainless Steel 316L
Standard: ASTM A269 / ASME SA269, ASTM A213 / ASME SA213, EN 10216-5
Outer Diameter (OD): 1/4" - 2"
Surface Finish: Polished (Internal & External)
Length: Fixed Length (6m) or Cut-to-Length

The safety of hydraulic systems is crucial, therefore we implement strict quality control and testing procedures for every hydraulic tube that leaves the factory. All tubes must undergo:

• 100% hydrostatic testing or non-destructive testing (such as eddy current testing)
• Precise measurements of outer diameter, wall thickness, concentricity, and surface condition

These tests verify pressure bearing capacity and integrity under conditions far exceeding working pressure, ensuring compliance with international standards such as ASTM A269.

316L stainless steel is the preferred material for hydraulic system applications due to:

• Stronger corrosion resistance than 304L in high chloride and industrial acidic environments
• Excellent combination of strength and toughness for safety under high pressure
• Low-carbon composition with excellent weldability for easy installation and maintenance
• Protection of hydraulic oil purity and extended pipeline service life

316L stainless steel seamless tubes are the ideal choice for hydraulic systems operating under harsh conditions because they:

• Withstand extreme working pressures with seamless structure
• Offer exceptional resistance to chloride corrosion (superior to 304 stainless steel)
• Feature smooth inner walls and precise tolerances to protect sensitive components
• Reduce failure rates and lifecycle maintenance costs

Ideal for offshore platforms, marine equipment, chemical plants, and other corrosive environments.

The core process for producing high-precision hydraulic pipes that provides:

• Secondary precise shaping of outer diameter, inner diameter, and wall thickness
• Superior dimensional accuracy compared to hot-rolled pipes
• Improved surface smoothness and enhanced mechanical strength
• Absolute sealing when connecting hydraulic pipes and fittings
• Reduced system pressure loss