Cold rolled (dial) carbon steel pipe in addition to general steel pipe, low and medium pressure boiler steel pipe, high pressure boiler steel pipe, alloy steel pipe, stainless steel pipe, oil cracking pipe, other steel pipe, also includes carbon thin-wall steel pipe, alloy thin-wall steel pipe, stainless steel pipe, special-shaped steel pipe. The outer diameter of hot-rolled seamless pipe is generally greater than 32mm, and the wall thickness is 2.5-75mm. The outer diameter of cold-rolled seamless steel pipe can be up to 6mm, and the wall thickness can be up to 0.25mm. The outer diameter of thin-walled pipe can be up to 5mm, and the wall thickness is less than 0.25mm. General carbon steel pipe: is made of 10, 20, 30, 35, 45 and other high-quality carbon junction steel 16Mn, 5MnV and other low alloy structural steel or 40Cr, 30CrMnSi, 45Mn2, 40MnB and other alloy steel hot rolled or cold rolled. 10, 20 low carbon steel manufacturing seamless pipe is mainly used for fluid conveying pipe. 45, 40Cr and other medium carbon steel seamless pipe to manufacture mechanical parts, such as cars, tractor parts. Generally use carbon steel pipe to ensure the strength and flattening test. Delivery of hot-rolled steel pipes in hot-rolled or heat-treated condition; Cold rolled and delivered in heat-treated condition.
Standard | GB, DIN, ASTM ASTM A106-2006, ASTM A53-2007 | Grade |
10#-45#, 16Mn
10#, 20#, 45#, 16Mn |
Thickness | 8 - 33 mm | Section Shape | Round |
Outer Diameter | 133 - 219 mm | Place of Origin | Shandong, China (Mainland) |
Secondary Or Not | Non-secondary | Application | Hydraulic Pipe |
Technique | Cold Drawn | Certification | API |
Surface Treatment | factory state or painted black | Special Pipe | API Pipe |
Alloy Or Not | Non-alloy | Length | 5-12M |
Outer Diameter | 21.3-610mm | Grade | 20#, 45#, Q345, API J55, API K55, API L80, API N80, API P110, A53B |
Standard | ASME, ASTM |
Models of Steel Pipes | Chemical Component | |||||||
Steel 20
(ASTM A106B) |
C | Si | Mn | P | S | Cu | Ni | Cr |
0.17~0.24 | 0.17~0.37 | 0.35~0.65 | 0.035max | 0.035max | 0.25max | 0.25max | 0.25max | |
Steel45 (ASTM 1045) | 0.42~0.50 | 0.17~0.37 | 0.50~0.80 |
0.035max
|
0.035max | 0.25max | 0.25max | 0.25max |
16Mn(Q345B) | 0.12~0.20 | 0.20~0.55 | 1.20~1.60 | 0.035max | 0.035max | 0.25max | 0.25max | 0.25max |
45Mn2 ( ASTM1345) | 0.42~0.49 | 0.17~0.37 | 1.40~1.80 | 0.035max | 0.035max | 0.3max | 0.3max | 0.30max |
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