Black Carbon Steel Square Pipe Inquiry | ASTM Oil Service and Custom Fabrication Requirements

• Invoicing

  By Actual Weight, Actual Weight
  Oiled or Non-oiled

  Non-oiled
• Section Shape

  Square
  Surface Treatment

  Hot Rolled
• 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
  Certificate

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

  within 7 days
  Grade

  carbon steel
• Length

  12 m, 6 m, 6.4 m, 6-12m Customized Length
  Processing Service

  Welding, Punching, Cutting, Bending, Decoiling, Bending, Welding, Decoiling, Punching, Cutting
• Special Pipe

  API Pipe, EMT Pipe, Thick Wall Pipe
  Standard

  ASTM
• Thickness

  0.4-16mm or as required
  Shape

  square
• MOQ

  1 ton
  Certification

  ISO 9001 BV
• Color

  plain
  Price Term

  CIF CFR FOB EX-WORK
• Payment

  T/T30% Advance+70% Balance
  SAMPLE

  Sample Freely

Define complete square tube dimensions before selecting material for an oil service request.

Section and wall

The detailed shape is square with a broad 0.4–16 mm thickness scope and no side dimensions. Specify both sides and compatible actual wall rather than treating the wall range as a complete pipe size.

Material and finish

The grade says carbon steel with general ASTM wording. Agree actual designation, manufacturing route and the requested black surface condition with material and dimensional inspection.

• Actual material designation
• Both square side dimensions
• Compatible wall thickness
• Black surface and cut length
• Manufacturing and service tests

Acceptance requirements

Several lengths and bending and cutting services are described. Define operating and fabrication requirements separately; oil application and certificate names do not establish pressure capacity, weld quality, corrosion life or suitability for a completed pipeline.