GB/T 8163 Q345E seamless alloy steel pipe

GB/T 8163 Q345E seamless alloy steel pipe

Standard: GB/T 8163

GB/T 8163 standard specifies the order content, size, shape, weight, technical requirements, test methods, inspection rules, packaging, marking and quality certificate of seamless steel pipes for fluid transportation. GB/T 8163 standard is applicable to seamless steel pipes for general fluid transportation.

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Q345E pipe is a Chinese GB standard high strength low alloy structural steel pipe made with a hot-rolling process. It is a general seamless steel pipe for conveying water, oil, gas and other fluids.

GB/T 8163 standard specifies the order content, size, shape, weight, technical requirements, test methods, inspection rules, packaging, marking and quality certificate of seamless steel pipes for fluid transportation. GB/T 8163 standard is applicable to seamless steel pipes for general fluid transportation.

GB/T 8163: 10#, 20#, Q345A, Q345B, Q345C, Q345D, Q345E

GBT 8163 Q345E seamless steel pipe composition(%)

C max.

Si max.

Mn max.

P max.

S max.

Cr max.

Ni max.

Cu max.

N max.

Mo max.

Nb max.

V max.

Ti max.

Als min.

0.18

0.50

1.70

0.025

0.020

0.30

0.012

0.30

0.012

0.10

0.07

0.15

0.20

0.015

GBT 8163 Q345E seamless pipe mechanical properties

Grade

Tensile strength [Mpa]

Yield strength[MPa] in different wall thick

Elongation [%,min]

≤16

16<S≤30

S>30

Q345E

470-630

345

325

295

21

GBT 8163 Q345E seamless pipe size:Out diameter:8-716mm Wall thickness:1-50mm

Length: 3,000mm to 12,500mm

Surface: bare pipe, or to be painted with black or other color painting, or coated with anti-corrision paint

End types: plain end, or bevelled end

Outside Diameter Tolerance

Types

Tolerance, mm

Hot rolled pipe

±1%

Cold drawn pipe

±1%

Wall thickness Tolerance of cold drawn Q345E pipe

Wall Thickness (S) , mm

Tolerance

≤3

+15%, -10%

S>3

±12.5%, -10%

The company has advanced technology and equipment and a strong technical force,and its seamless pipes production and inspection equipment are most up-to-date in domestic steel pipe industry. Our GB/T 8163 Q345E seamless steel pipes are supplied in cold drawn and hot rolled steel pipe. These pipes are mainly used for mechanical properties and general engineering purposes.

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