GB3087-2008 is the standard for seamless tubes of low and medium pressure boilers.


GB3087-2008 is used to manufacture water wall, energy saver, reheater, superheater and steam pipe of medium and low pressure boilers.


Seamless tubes for medium and low pressure boilers (GB3087-2008) are used to manufacture superheated steam pipes of various structures, boiling water pipes and superheated steam pipes for locomotive boilers, large smoke pipes, small smoke pipes and arched brick pipes. Hot-rolled and cold-drawn seamless tubes of high quality carbon structural steel.


GB3087-2008 "Seamless Steel Tube for Small and Medium-sized Boilers". There are 43 types of structural steel pipes for boilers with diameters ranging from 10 mm to 426 mm. Twenty-nine species with wall thickness of 1.5 to 26 mm.


GB3087-2008 "Seamless Steel Tube for Medium and Low Pressure Boilers" and GB5310-2008 "Seamless Steel Tube for High Pressure Boilers". Appearance quality: Cracks, folds, creases, crusts, separation and fine lines are not allowed on the inner and outer surfaces of steel pipes. These defects should be completely eliminated. The clearance depth shall not exceed the negative deviation of nominal wall thickness, and the actual wall thickness of cleaning places shall not be less than the minimum allowable wall thickness.

Gb3087-2008 is the standard for seamless tubes of low and medium pressure boilers.


Gb3087-2008 is used for manufacturing water wall, economizer, reheater, superheater and steam pipe of medium and low pressure boiler.


Seamless pipes for medium and low pressure boilers (gb3087-2008) are used to manufacture superheated steam pipes of various structures, boiling water pipes and superheated steam pipes for locomotive boilers, large-scale smoke pipes, small smoke pipes and arch brick pipes. Hot rolled and cold drawn (rolled) high quality carbon structural steel seamless pipe.


Gb3087-2008 seamless steel tubes for medium and small boilers. There are 43 types of structural steel tubes for boilers, with an outer diameter of 10 to 426 mm.  29 species with a wall thickness of 1.5 to 26 mm.


Gb3087-2008 seamless steel tubes for medium and low pressure boilers and GB5310-2008 seamless steel tubes for high pressure boilers. Appearance quality: no cracks, folds, folds, crusts, separations and fine lines are allowed on the inner and outer surfaces of steel pipes. These defects should be eliminated completely.  The gap depth shall not exceed the negative deviation of the nominal wall thickness, and the actual wall thickness of the cleaning site shall not be less than the minimum allowable wall thickness.