Schedule 40 Hot Dip Galvanized Carbon Seamless ERW Steel Pipe

Hot-dip galvanisation is a form of galvanisation. It is the process of coating iron, steel or aluminium with a thin zinc layer, by passing the metal through a molten bath of zinc at a temperature of around 860 °F (460 °C). When exposed to the atmosphere, the pure zinc (Zn) reacts with oxygen (O2) to form zinc oxide (ZnO), which further reacts with carbon dioxide (CO2) to form zinc carbonate (ZnCO3), a usually dull grey, fairly strong material that stops further corrosion in many circumstances, protecting the steel below from the elements. Galvanized steel is widely used in applications where rust resistance is needed, and can be identified by the crystallization patterning on the surface.

seamless galvanized steel pipe:1/2"～24",DN15～DN60,OD21.3MM～609.6MM
Welded galvanized steel pipe:1/2"～48",DN15～DN1200,OD21.3MM～1219.2MM
Galvanized Steel Pipe Thickness
2mm-60mm,sch10,sch20,sch30,std,sch40,sch60,xs,sch80,sch100,sch120,sch140,sch160,xxs,sch5s,sch20s,sch40s,sch80s etc
Carbon Steel Material
ASTM A53B,A106B,API 5L B,X42,X46,X52,X60,X65,Q235,20#,Q345,ST37.0,ST35.8,St37.2,St35.4/8,St42,St45,St52,St52.4,STP G38,STP G42,STPT42,STB42,STS42,STPT49,STS49 etc

GB/T3091 Welded steel pipe for low pressure liquid delivery
GB/T9711 Petroleum and natural gas industries--Steel pipe for pipelines
BS:1387 Steel Tubes for use for Water,Gas,Air and Steam
ASTM A53 Standard Specification for Pipe,Steel,Black and Hot-Dipped,Zinc-Coated,Welded and Seamless
DIN 2458 WELDED STEEL PIPES AND TUBES
EN10217 Welded steel tubes for pressure purposes. Technical delivery conditions. Non-alloy steel tubes with specified room temperature properties