st35.8 1.0305 e355 cold drawn seamless steel pipe manufactures
astm a106/a53 gr.b e355 cold drawn seamless steel pipe manufactures
astm a106/a53 gr.b e355 cold rolled seamless steel pipe manufactures
S5 1.5M 400mm diameter Soft Rock/Abrasive Drilling(Complete with Rock Teeth and Rock Pilot)