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Tianjin Wanlei Steel Pipe Co.,Ltd
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GB/T 8163 Steel Pipe
GB/T 8163 is Chinese standard for carbon steel pipe,the steel pipe apply to convey liquid service.
Description
Tianjin Wanlei Steel Pipe Co., Ltd. is one of the leading manufacturers and suppliers of gb/t 8163 steel pipe in China, featured by quality products and low price. If you're going to wholesale durable gb/t 8163 steel pipe made in China, welcome to get pricelist and free sample from our factory.
Introduction
The types of GB/T 8163 steel pipes are hot rolling（Extrusion, expanding）steel pipe and cold-drawn（rolling）steel pipe.
Steel pipes shall be made by hot rolled (extrusion, expansion) or cold drawn (rolled) seamless .
GB/T 8163 Pipe is made of material 10#,20#,Q295,Q345,Q390,Q420,Q460 steel.
Q345 steel:The content of P and S of grade A,B,C steel should not exceed 0.03%.
Length:3m-12.5m
Mechanical Property
Grade |
Level | Mechanical Property | ||||
Tensile Strength（MPa） | Yield StrengthA（MPa） | Percentage Elongation After Fracture（%） | ||||
OD(mm) | ||||||
≤16 | >16-30 | >30 | ||||
10 | – | 335-475 | ≥205 | ≥195 | ≥185 | ≥24 |
20 | – | 410-530 | ≥245 | ≥235 | ≥225 | ≥20 |
Q345 | A,B | 470-630 | ≥345 | ≥325 | ≥295 | ≥20 |
C,D,E | ≥21 | |||||
A:In tensile test, if yield strength cannot be measured, non-proportional elongation strength can be measured instead. | ||||||
Chemical Composition
Grade | Level | Chemical Composition(%) | |||||||
C | Si | Mn | P | S | Cr | Ni | Cu | ||
10 | – | 0.07~0.13 | 0.17~0.37 | 0.35~0..65 | ≤0.035 | ≤0.035 | ≤0.15 | ≤0.30 | ≤0.25 |
20 | – | 0.17~0.23 | 0.17~0.37 | 0.35~0.65 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.30 | ≤0.25 |
Q345 | A | ≤0.20 | ≤0.50 | ≤1.70 | ≤0.035 | ≤0.035 | ≤0.30 | ≤0.50 | ≤0.30 |
B | ≤0.20 | ≤0.035 | ≤0.035 | ||||||
C | ≤0.20 | ≤0.030 | ≤0.030 | ||||||
D | ≤0.18 | ≤0.030 | ≤0.025 | ||||||
E | ≤0.18 | ≤0.025 | ≤0.020 | ||||||
Bending
Nominal Wall Thickness(mm) | Bending Per Meter(mm/m) |
≤15 | ≤1.5 |
>15~30 | ≤2.0 |
>30 or Outer Diameter≥351 | ≤3.0 |
The full length bending degree of the steel pipe shouldn’t be greater than 1.5‰ of the total length.
Protection
The inner and outer surface of the steel pipe can be coated with protective layer.
Deliver Conditon
Hot rolling（Extrusion, expanding）steel pipe shall be delivered in hot rolled or heat treated condition.It shall be stated in the contract when the heat treatment condition is required.
Cold-drawn（rolling）steel pipe shall be delivered in heat treatment condition.According to the requirements of the customer, the delivery can also be delivered in cold drawing (rolling) condition through negotiation between the supplier and buyer and indicated in the contract.
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