A795 specification covers black and hot-dipped galvanized welded and seamless steel pipe in sizes NPS 1/2 (Note 1) to NPS 10 inclusive, with wall thicknesses as given in Table 1 and Table 2.Pipe having other wall thicknesses may be furnished providedsuch pipe complies withall other requirements of this specification and the outside diameter is as given in Table 2. Pipe ordered under this specification is intended for
use in fire protection systems. The pipe may be bent, but it is not intended for bending made at ambient temperature where in the inside diameter of the bend is less than twelve times the outside diameter of the pipe being bent (Note 2).
A795 Type E Grade A Chemical Requirements
Hydrostatic Testing And Nondestructive Electric Testing
Dimensions And Weights ( plain end )
Coating
Galvanized pipe shall be coated with zinc inside and outside by the hot-dip process. The zinc used for the coating shall be any grade of zinc conforming to SpecificationB 6.
11.2 Weight of Coating:
11.2.1 The weight of the zinc coating shall not be less than 1.5 oz/ft²(0.46 kg/m²) as determined from the average of two specimens tested in accordance with 16.1 and not less than 1.3 oz/ft² (O.40 kg/m²) for either of the specimens.The weight of coating expressed in ounces per square foot or kilograms per square metre shall be calculated by dividing the total weight of zinc,inside plus outside,by total area,inside plus outside,of
the surface coated.
11.2.2 Test specimens for the determination of weight of coating shall be cut approximately 4 in.(102 mm) in length.
11.2.3Determine the weight of zinc coating by a stripping test in accordance with Test Method A 90. The total zinc on each specimen shall be determined in asingle stripping operation.
11.2.4 If flattening tests are made on galvanized samples, any flaking or cracking of the galvanized coating shall not be cause for rejection.
11.3 Protective Coating-If required by the purchaser,the pipe shall be cleaned of all foreign matter,dried,and givena protective coating such as oil, lacquer, enamel, etc.as agreed upon by the purchaser.
A795 Type E Grade A Pipe factory
