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GB/T 3091-2008 Q345A welded steel pipes

Q345A welded steel pipes belongs low-alloy high-strength steel pipe which under GB/T 3091-2008 standard, Q345A welded steel pipes mainly for boilers, heat exchangers, petroleum, aerospace, chemicals, electricity, military. The surface can be polished finish, black, paint, oil, galvanized, PE coating, PVC coating, anti-rust oil, anti-rust paint, color pre-coating for protection.

GB/T 3091-2008 Q345A welded steel pipes

GB/T 3091-2008 Q345A welded pipes Chemical composition

chemical composition of Q345A

Grade

Class

C

Mn

Si

S

P

 

 

no more than

Q345

A

<=0.2

<=1.7

<=0.5

0.035

0.035

Q345A welded steel pipe Mechanical properties

mechanical property of Q345A

Grade

lowder yield

Tensile

Extensibility after

strength Rel/N/MM^2

strength

fracture A/%

no less than

R/N/MM^2

no less than

t<=16mm

        T>16mm

no less than

D<=168.3MM

D>168.3mm

Q345A

345

325

470

13

18

BBN Steel as one of the most popular GB/T 3091 Q345A welded steel pipe supplier in China, we only offer qualified GB/T 3091-2008 Q345A welded steel pipe products with the best quality and reasonable price for our customers.welcome to inquire.

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