德標(biāo)ST52無縫管是什么材質(zhì)/國標(biāo)16Mn無縫鋼管價(jià)格
st52相當(dāng)于Q345B,或者16mn
化學(xué)成分如下:
C <=0.20 Si <=0.55 Mn <=1.60 P <=0.030 S <=0.030 Cu <=0.55 N <=0.012國標(biāo)16Mn無縫鋼管價(jià)格電議:0510-88268136