Seamless hot-deformed steel pipes.

    ..jpgThis group of metal products includes seamless hot-deformed pipes of general purpose made of carbon and alloyed steel; their external diameter, wall thickness and length conform to GOST 8731-78 .
Pipe schedule conforms to GOST 8732-78 .
Depending on their length, pipes can be:
• off-gauge length – in the range from 4 to 12.5 m
• gauge length –in the range of off-gauge length
• multiple gauge length - in the range of off-gauge length with 5 mm allowance for each cut
• approximate length – in the range of off-gauge length
Length limit deviations for gauge length pipes and multiple gauge length pipes shall not exceed +10 mm - with length up to 6 m; +15mm – with length over 6 m or external diameter over 152 mm.
Depending on their quality characteristics, pipes shall be fabricated of the following groups:
• – with normalization of mechanical characteristics; made of steel grades 2, 4, 5, 6 according to GOST 380-88 ;
• - with normalization of chemical composition; made of dead-melted steel of grades conforming to GOST 380 , GOST 1050 , GOST 4543 & GOST 19281 ;
• – with normalization of mechanical characteristics and chemical composition; steel grades conforming to GOST 380 , GOST 1050 , GOST 4543 & GOST 19281 ;
• – with normalization of chemical composition; steel grades conforming to GOST 1050 , GOST 4543 & GOST 19281, with control of mechanical characteristics for thermo-treated samples. Norms of mechanical characteristics shall comply with standards specified for steel.
• – without normalization of mechanical characteristics or chemical composition, but with normalization of hydraulic test pressure.

'infocom:like' is not a component