Product Description

Out Dameter:*1.3mm***0mm 
Wall Thickness:0.5mm**0mm
Length:0.5mtr**0mtr

Standard：BS ***7,ASTM A*3,DIN ***8,EN ****7,API 5L 

standard details:
ASTM A *3 Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless.
IS ***9 Steel tubes for water and sewage.
IS ********2 Steel tubes for use in transportation of oil; gas & Petroleum products
BS ***7 Steel Tubes for use for Water, Gas, Air and Steam.
DIN ***8 welded steel pipe and tubes.
EN****7 Welded steel tubes for pressure purposes. Technical delivery conditions. Non-alloy steel tubes with specified room temperature properties.

definition:
High frequency Resistance Welding (ERW), is  unlike ordinary welded pipe Welding process, Welding seam is composed of steel belt ontology of parent metal melting and mechanical strength than the general Welding control.

production:
ERW steel pipe is made by high frequency welding machine to certain specifications of strip steel coil into circular tube and straight seam welded steel pipe.The shape of the ERW straight welded pipe can be round, straight seam welded pipe pipe, also can be square, square rectangular tubes or aliens, special-shaped steel tube, it depends on the sizing rolling after welding.Resistance welding with high production efficiency, low cost,save material, easy automation, etc, therefore widely used in aviation,aerospace,energy, electronics, automobile, light industry and so on various industry sectors, is one of the important welding process.