METHOD FOR HOT PRESSURE WELDING Russian patent published in 2003 - IPC

Abstract RU 2202455 C2

FIELD: welding tubes with corrosion resistant coating. SUBSTANCE: method comprises steps of mechanically working tube ends and butt joining of them; applying compression effort to butt and heating it until temperature consisting 0.8 - 0.9 of melting temperature value; after achieving temperature 768 -910 C applying additional effort. EFFECT: enhanced quality of joint without damaging corrosion-resistant coating.

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RU 2 202 455 C2

Authors

Gubarev A.V.

Gubarev V.V.

Gubarev V.V.

Dates

2003-04-20Published

2001-06-19Filed