16MNq345c無(wú)縫鋼管 16MNq345c無(wú)縫鋼管與Q345A,B相比而言。低溫沖沖擊的試驗(yàn)溫度低,性能好。含有害物資P,S量比Q345A。主營(yíng);16MNq345b無(wú)縫鋼管,dq16MNq345c無(wú)縫鋼管,dq16MNq345d無(wú)縫鋼管,dq16MNq345e無(wú)縫鋼管,公司鄭重承諾,在同等的質(zhì)量下,保證以最低的價(jià)格來(lái)回饋新老客戶. 機(jī)械性能指標(biāo)(%): 牌號(hào) 壁厚mm 伸長(zhǎng)率δ5≥(%) 屈服強(qiáng)度δs(MPa≥) 試驗(yàn)溫度℃ Q345A ≤16 21 345 不需 Q345B ≤16 21 345 20 Q345C 16-35 22 ≥325 0 化學(xué)成分: 牌號(hào) C Si Mn P S V Nb Al Ti Q345A ≤0.20 ≤0.55 ≤1.70 ≤0.045 ≤0.045 0.02-0.15 0.015-0.060 0.02-0.20 Q345B ≤0.20 ≤0.55 ≤1.70 ≤0.040 ≤0.040 0.02-0.15 0.015-0.060 0.02-0.20 Q345C ≤0.20 ≤0.55 ≤1.70 ≤0.035 ≤0.035 0.02-0.15 0.015-0.060 ≥0.015 0.02-0.20
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