Product Description
Product Name | Carbon Steel Pipe |
Standard | GB/T 700-2006,GB/T 1591-94,JIS G3101-2004, ASTM A36/A36M-05,ASTM A242/A242M-04,ASTM A529/A529M-05, ASTM A572/A572M-06,EN 10025-2-2004 |
Outer Dia | 8mm-610mm |
Dia Tolerance | Control with in the standard, OD:+-1%, WT:+-10% |
Materials | Q195,Q215 A,Q215 B,Q235 A,Q235 B,Q235 C, Q235D,Q275,Q275B,Q275C,Q275D,Q295,Q345,Q390,Q420, Q460, SS330,SS400,SS490,SS540,A36,1,GR.36,50(245),55(380),42(290), 60(415),65(450),S185(1.0035),S235JO(1.0114), S235JR(1.0038), S235J2(0.0117),S275JR(1.0044),S275JO(1.10143),S355JO(1.0553), E295(1.0050),E335(1.0060), S235J2W(1.861),S355J2W(1.8965),10#, 15#20# |
Inspection | ISO,BV,SGS,MTC |
Packing | Waterproof paper, and steel strip packed. Standard Export Seaworthy Package.Suit forall kinds of transport,or as required |
Supply Ability | 1000 metric tons/month |
MOQ | 5metric ton,sample order accepted |
Shipment time | Within 7-10 workdays after receiving deposit or L/C |
Commonly Used Steel Types
| Category | Grades | Sizes | Standard |
| Carbon structure steel | Q195,Q215,Q235,Q275 | 16mm-250mm | GB/T700-2006 |
| Low alloy high strength structure steel | Q295,Q345,Q390,Q420, Q460 | 16mm-250mm | GB/T1591-2008 |
| Prime Carbon structure steel | 10#, 20#, 35#, 45#, 60#, 20Mn,65Mn,B2, B3,JM20, SH45,S45C,C45 | 16mm-250mm | GB/T699-1999 |
| Alloy structure steel | 30Mn2,40Mn2,27SiMn, 42Crmo, 20Cc40Cr,20CrMo, 35CrMo,20CrMnTi, 30CrMnTi,20MnVB, 20MnTiBf 45MnV 20CrNiMo, Q345B, 35MnBM,40MnB,36Mn2V | 16mm-250mm | GB/T3077-1999 |
| Spring Steel | 65Mn,60Si2Mn, 50CrVA | 16mm-250mm | GB/T1222-84 |
| Bearing Steel | GCr15tGCr15GD,55SiMoV | 16mm-250mm | GB/T18254-2002 |
| Structural steels subject to end-quench hardenability requirements | 20CrMnTi,30CrMnTi, 20Cr, 40Crf30CrMo,42CrMoA,27SiMn, 40Mn2H, 20CrNiMo, 40Mn2,q345b,35MnBM, 40MnB,45MnV. | 16mm-250mm | GB/T5216-2004 |
| Oil wells structural steel | 37Mn5,36Mn2V | 16mm-250mm | Q/LYS248-2007 |
| Marine anchor chain steel | CM490,CM690,M30Mn2 | 16mm-250mm | YB/T66-1987 GB/T18669-2002 |
1.What is a steel round bar?
A steel round bar is a cylindrical metallic bar widely used in construction, industrial applications, and manufacturing. These round bars come in various sizes and materials tailored to different industries. The steel price varies based on material composition, size, and market demand.
2.What is a round bar called?
The most common shapes are round bar (also called rod), rectangular bar (including square bar, the special case of equal sides), and hexagonal bar (usually called hex bar for short). Tube and pipe are similar, but have hollow centers and are traditionally not called "bar" in industrial usage.
3.What is the difference between a round bar and a rebar?
The first key difference to note is within the strength of the two bars. The rebar has a much higher tensile and maximum bending strength. Such properties make it the perfect material for fortifying concrete. In doing just that, the rebar can withhold its molecular integrity for well over 100 years.
4.How strong is a round bar?
Strength and Durability: Round bars exhibit excellent tensile and compressive strength, making them suitable for high-stress applications. Rotational Applications: Their cylindrical shape allows them to excel in applications involving rotation, such as axles, shafts, and other machinery components.
5.What is 4140 round bar?
4140 is a widely used medium carbon steel. A general purpose alloy, offering the right combination of strength, toughness and hardness with good machinability. 4140 can be quenched and tempered to a broad range of strength levels.



















