12 mm Stainless Pipe Plasma-TIG Welding | haibao robot

Project photographs and equipment references

haibao robot · CUSTOMER APPLICATION

Plasma-Plus-TIG Welding for Stainless Pipe at Hongyuan

Jiangsu Hongyuan Pipe manufactures metal hoses, expansion joints and related pipe products. Its collaboration with haibao robot introduced a plasma-plus-TIG welding process to improve joint preparation efficiency and weld consistency.

Reducing preparation before welding

The source case focuses on a 12 mm pipe-joint application where conventional production required bevel preparation. The selected P+T process combined the concentrated plasma arc with TIG welding to achieve penetration from one side and a formed weld root on the reverse side.

What the project demonstrates

For the documented joint, the process supported welding without the conventional bevel preparation step. Removing that operation reduced pre-weld machining and handling. This capability must be assessed against material grade, joint gap, alignment, welding position and the agreed procedure; it is not a blanket claim that every 12 mm joint can be welded without preparation.

Inspection and production benefits

The project account reports improved radiographic inspection results, fewer welding defects and a shorter production route after introducing the equipment. No specific inspection pass rate is published for this case, so the improvement is described qualitatively.

A trial-led approach to equipment selection

Review the production drawing and acceptance requirements first. Use representative material and fit-up conditions for welding trials, then assess penetration, root profile, surface condition and the specified inspection results. Include loading, clamping and any finishing in the cycle-time comparison.

Request an application review

Send pipe grade, wall thickness, diameter, joint preparation, allowable root profile, inspection requirements and target batch size.

haibao robot
Shao Yicheng · Key Account Project Director · International Welding Engineer (IWE)
Email: masterhyper@163.com
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Office: +86 519 8837 0688