ASTM A199 Seamless Cold-Drawn Carbon Steel Condenser pipes

　　This specification covers several grades of minimum-wall-thickness, chromium-molybdenum and chromium-molybdenum-silicon, seamless, cold-drawn, intermediate alloy steel tubes for heat exchangers, condensers, and similar heat transfer apparatus.

　　The seamless steel pipe is made of perforated whole round steel, and the steel pipe without weld seam on the surface is called seamless steel pipe. According to the production method, seamless steel pipes can be divided into hot-rolled seamless steel pipes, cold-rolled seamless steel pipes, cold-drawn seamless steel pipes, extruded seamless steel pipes, and pipe jacking.

　　According to different uses, there are thick-walled seamless steel pipes and thin-walled seamless steel pipes.

　　Seamless steel pipes are mainly used as petroleum geological drilling pipes, cracking pipes for petrochemical industries, boiler pipes, bearing pipes and high-precision structural steel pipes for automobiles, tractors and aviation.

1.2 The tubing sizes usually furnished to this specification are to 3 in. [3.2 to 76.2 mm] in outside diameter. Tubing having other dimensions may be furnished provided such tubes comply with all other requirements of this specification.

1.3 Mechanical property requirements do not apply to tubing smaller than in. [3.2 mm] in inside diameter or 0.015 in. [0.4 mm] in thickness.

1.4 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification. The inch-pound units shall apply unless the "M" designation of this specification is specified in the order.

ASTM A199 specification covers several grades of ferritic steel, including Grade T5, Grade T9, Grade T11, Grade T22, and Grade T91.

Chemical Components (%) of ASTM A199

Standards of seamless steel pipe

Specification of seamless steel pipe

Out diameter: 1/2 inch - 36 inch (21.3mm-914.4mm)

Thickness: 2.11mm-60mm ( SCH10, SCH20, SCH40, SCH80, STD, SCH120, SCH160, XXS)                  

Process of seamless steel pipe

According to different manufacturing(mfg), seamless steel pipe can be divided into hot rolled pipe, cold rolled pipe, cold drawn pipe and extruded pipe.

Hot Rolled Process for Seamless Steel Pipe

Round Pipe Billet → Heating → Punching → Three-Roller Skew Rolling, Continuous Rolling or Extruding → Pipe Detaching → 

Micro Tension Sizing or Reducing → Cooling → Straightening → Hydrostatic Test or Inspection → Marking → Warehousing

Cold Drawn Process for Seamless Steel Pipe

Round Pipe Billet → Heating → Punching → Pipe Head Treatment → Annealing → Acid Pickling → Coating Oil → Multi-pass Cold Drawing

→ Pipe Billet→ Heat Treatment → Straightening →Hydrostatic Test or Inspection → Marking → Warehousing

　　The production of our ASTM A199 Seamless Cold-Drawn Carbon Steel Condenser pipes is tightly regulated and all of the pipes we stock have been fully tested to international standards to ensure we only supply the highest quality products.