R780 seamless cold drawn drill rods tubes pipes WLA WLB WLN WLH 1. Product Name: Seamless Steel Tubing wire-line drill rods 2. Size Range: WLA,WLB,WLN,WLH  Length:3m,3.06m 5.8m/6m, maximal 11.8m 3. Stable Quality with Comeptitive Price 4. Protective Atmosphere Heat Treatment, Surface is clean and smooth, without oxide scale 5. Good Extending and Bending Ability, Longer Work Life Product Name Seamless Steel Tubing wire-line drill rods Material 4130+SR  XJY600 XJY750 XJY850 BL850 Delivery Condition HR, CW, SR, A, N,Quenching & Tempering Standard ASTM GB9808 Application Wire-line drill rods Certificate TS16949, ISO 9001 HS code…

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