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Hebei Lufeng Piping Equipment Co., Ltd.
Carbon /Alloy steel pipes, ERW steel pipes, API 5L LSAW&SSAW, ASME B16.9/MSS SP-75 BW pipe fittings, ASME B16.5/16.47 steel flanges, ASME B16.11/MSS SP-97 forged fittings, Knife gate valves, Butterfly
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Q345 seamless alloy steel pipe

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Q345 seamless alloy steel pipe

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Place of Origin : Cangzhou, China (Mainland)

Packaging Details : In bundles,in bulk,plastic waterproof package for Q345 seamless alloy steel pipe

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Q345 seamless alloy steel pipe

(1)Normal size:

sizes outer diameter(mm) thickness(mm) tolerance(mm) length(m)
round pipe 20-273 0.3-50 ±0.3 3,6,8,12,etc
rectangular pipe 20*30-150*250 0.3-12 ±0.3 3,6,8,12,etc
square pipe 20*20-200*200 0.3-12 ±0.3 3,6,8,12,etc

(2) Chemical element:

Grade C Si Mn P S Al
Q345A ≤0.20 ≤0.50 ≤1.70 ≤0.035 ≤0.035 Al≥0.015
Q345B ≤0.20 ≤0.50 ≤1.70 ≤0.035 ≤0.035 Al≥0.015
Q345C ≤0.20 ≤0.50 ≤1.70 ≤0.030 ≤0.030 Al≥0.015
Q345D ≤0.18 ≤0.50 ≤1.70 ≤0.030 ≤0.025 Al≥0.015
Q345E ≤0.18 ≤0.50 ≤1.70 P≤0.025 ≤0.020 Al≥0.015
Grade Ti Cr Ni Mo Nb V
Q345A ≤0.20 ≤0.30 ≤0.012 ≤0.10 ≤0.07 ≤0.15
Q345B ≤0.20 ≤0.30 ≤0.012 ≤0.10 ≤0.07 ≤0.15
Q345C ≤0.20 ≤0.30 ≤0.012 ≤0.10 ≤0.07 ≤0.15
Q345D ≤0.20 ≤0.30 ≤0.012 ≤0.10 ≤0.07 ≤0.15
Q345E ≤0.20 ≤0.30 ≤0.012 ≤0.10 ≤0.07 ≤0.15

(3) Mechanical properties

Annealing hardness Cold pull hardness Preheating temperature Quenching temperature Holding time Hardening medium Temper temperature After tempering hardness
HBS HBS ℃ ℃ min ℃ ≥HRC
　 　 　 salt-bath furnace controlled atmosphere furnace 　 　 　
235 262 788 1191 1204 5~15 air cooling 522 60

Q345 seamless alloy steel pipeQ345 seamless alloy steel pipe

Application
(1) For liquid transportation:water supply,water drainage,sewage treatment,engineering,transmission of mud,sea water.

(2) For gas:gas,steam,liquefied petroleum gas.

(3) For structure:piling pipe,bridge,Dock,road,building structure pipe,Marine piling pipe.


Company Information

Operation Philosophy
Create value for customers, and achieve a win-win situation.
Corporation values
Integrity, innovation, team work and high-quality.


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