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Manufacturing Process
Seamless Pipes manufacturing Process　
  • the process flow chart of cold-drawn steel pipe (*means quality control point)steel pipe,seamless tube, seamless pipe, ERW pipe, SSAW pipe, UOE pipe, JCOE pipe, pipe fitting, square pipe, rectangular pipe, hot dipped galvanized steel pipe and tube, stainless pipe, alloy pipe, API pipe, API 5L, API 5CT, ASTM, DIN 2391, ASTM 106 Gr.B, precsion steel tube, oil and casing tubing,pipe fitting, bend pipe, bend elbow, flange, seamless, butt welded, neck flanges, threaded flange, screwed flange, slip-on flange, lap joint flange, blind flange, socket welding flange, pipe cap, tees, crosses, pipe elbow, concentric reducer, eccentric reducer, valve, gate valve
  • the process flow chart of hot-rolled steel pipe (*means quality control point)
  • heat treatment process flow chart
  • threading process flow chart
    • (1)thubing & casing threading prcess flow
    • (2)coupling maching process flow
  • upseting prcocess flow chart
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