ST52 E355 BK+S Seamless Honed Hydraulic Cylinder Tube – Internal Chrome Requirement

• Invoicing

  By Theoretical Weight
  Oiled or Non-oiled

  Slightly Oiled
• Section Shape

  Round
  Surface Treatment

  Galvanized
• Tolerance

  ±1%
  Alloy Or Not

  Non-Alloy
• Application

  Fluid Pipe, Boiler Pipe, Drill Pipe, Hydraulic Pipe, Gas Pipe, Oil Pipe, Chemical Fertilizer Pipe, Structure Pipe, Other
  Certificate

  API , CE, BSI, RoHS, SNI, BIS, Saso, PVOC, SONCAP, SABS, SIRM, TISI, KS, JIS, Gs, ISO 9001
• Delivery Time

  within 7 days
  Grade

  Q235B
• Length

  12 m, 6 m
  Outer Diameter

  3 - 700 mm(0.12-27.56in)
• Processing Service

  Welding, Punching, Cutting, Bending, Decoiling
  Special Pipe

  API Pipe, Other, EMT Pipe, Thick Wall Pipe
• Standard

  GB, AISI ASTM JIS DIN GB
  Thickness

  0.5-27mm(0.02-1.06in)
• Product name

  Galvanized Steel Pipe
  Material

  Q235/Q235B/Q345/Q345B/Q195/St37/St42/St37-2/St35.4/St52.4/St35
• Technique

  Cold Drawn Hot Rolled
  Shape

  Round Pipe Tube
• Zinc layer thickness

  0.8-4.0mm or customized
  Diameter

  15-50mm or customized
• Wall thickness

  2-10mm or customized
  Packing

  Standard Seaworthy Packing
• Payment terms

  30%TT Advance + 70% Balance

Seamless honed tube is identified with ST52, E355 and BK+S requirements for hydraulic-cylinder barrels.

Define the tube geometry

Specify the selected grade, bore, wall and length against the component drawing. A cylinder-barrel name does not establish a pressure rating or finished-cylinder assembly.

• Seamless tube requirement.
• ST52/E355 grade references.
• BK+S condition request.
• Honed bore requirement.
• Internal chrome finish request.

Specify the internal surface

Provide bore tolerance, surface and coating acceptance for the actual cylinder design.

Request component records

Obtain material, manufacturing, dimensional and internal-finish evidence before machining or use. Generic galvanized-pipe descriptions do not define the honed chrome-plated barrel. Confirm the selected tube against the hydraulic design without assuming universal seal compatibility, working pressure or service life.