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large diameter welded steel pipe Large diameter welded steel pipe include LSAW and DSAW/SSAW spiral steel pipe. Material include API 5L Gr.B,X42,X46,X52,X56,X60,X65,X70,Q235,Q345,16Mn,L245 etc. Products are widely used in natural gas, petroleum, chemical industry, power, factory steel h pipe size factory steel h pipe size
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1095 carbon mild thin flat bar