RU96106703A - METHOD FOR INSULATING WELDED JOINTS OF PIPELINES CONSTRUCTED FROM STEEL PIPES WITH ENAMEL FACTORY COATING - Google Patents

METHOD FOR INSULATING WELDED JOINTS OF PIPELINES CONSTRUCTED FROM STEEL PIPES WITH ENAMEL FACTORY COATING

Info

Publication number
RU96106703A
RU96106703A RU96106703/06A RU96106703A RU96106703A RU 96106703 A RU96106703 A RU 96106703A RU 96106703/06 A RU96106703/06 A RU 96106703/06A RU 96106703 A RU96106703 A RU 96106703A RU 96106703 A RU96106703 A RU 96106703A
Authority
RU
Russia
Prior art keywords
welded joints
steel pipes
enamel
joint
factory coating
Prior art date
Application number
RU96106703/06A
Other languages
Russian (ru)
Other versions
RU2111409C1 (en
Inventor
В.Б. Потапов
А.Т. Санжаровский
Б.В. Уразов
В.А. Чиненов
А.А. Архангельский
Original Assignee
АОЗТ предприятий нефтегазового строительства Торговый дом "НЕГАС"
Товарищество с ограниченной ответственностью "РИМП"
Filing date
Publication date
Application filed by АОЗТ предприятий нефтегазового строительства Торговый дом "НЕГАС", Товарищество с ограниченной ответственностью "РИМП" filed Critical АОЗТ предприятий нефтегазового строительства Торговый дом "НЕГАС"
Priority to RU96106703A priority Critical patent/RU2111409C1/en
Priority claimed from RU96106703A external-priority patent/RU2111409C1/en
Application granted granted Critical
Publication of RU2111409C1 publication Critical patent/RU2111409C1/en
Publication of RU96106703A publication Critical patent/RU96106703A/en

Links

Claims (1)

Способ изоляции сварных стыков трубопровода с заводским эмалевым покрытием, включающий нанесение на наружную поверхность сварного стыка эмалевой фритты, нагрев изолируемого участка до температуры 750 - 850oC и формирование антикоррозионного эмалевого покрытия, отличающийся тем, что нагрев сварного стыка производится кольцевой газовой печью снаружи стыка, локализуя зону нагрева симметрично относительно стыка, при этом горелки расположены под углом Y к линии диаметра трубы, находящимся в пределах:
(arcsin(X/(2L + X)))/3 < Y < 2 • (arcsin(X/(2L + X)))/3,
где L - расстояние от горелок до поверхности трубы,
а X - диаметр трубы в мм.A method of isolating welded joints of a pipe with a factory enamel coating, including applying an enamel frit to the outer surface of the welded joint, heating the insulated section to a temperature of 750 - 850 o C and forming an anticorrosive enamel coating, characterized in that the welded joint is heated by an annular gas furnace outside the joint, localizing the heating zone symmetrically with respect to the joint, while the burners are located at an angle Y to the pipe diameter line, which is within:
(arcsin (X / (2L + X))) / 3 <Y <2 • (arcsin (X / (2L + X))) / 3,
where L is the distance from the burners to the pipe surface,
and X is the pipe diameter in mm.
RU96106703A 1996-04-04 1996-04-04 Method of insulation of welded joints of pipe lines erected from steel pipes with manufacture enamel coats RU2111409C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU96106703A RU2111409C1 (en) 1996-04-04 1996-04-04 Method of insulation of welded joints of pipe lines erected from steel pipes with manufacture enamel coats

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU96106703A RU2111409C1 (en) 1996-04-04 1996-04-04 Method of insulation of welded joints of pipe lines erected from steel pipes with manufacture enamel coats

Publications (2)

Publication Number Publication Date
RU2111409C1 RU2111409C1 (en) 1998-05-20
RU96106703A true RU96106703A (en) 1998-07-10

Family

ID=20179010

Family Applications (1)

Application Number Title Priority Date Filing Date
RU96106703A RU2111409C1 (en) 1996-04-04 1996-04-04 Method of insulation of welded joints of pipe lines erected from steel pipes with manufacture enamel coats

Country Status (1)

Country Link
RU (1) RU2111409C1 (en)

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