4 inch inside diameter Galvanized Carbon Steel Round Pipe thickness 6.02mm

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Size:4",DN100,114.3mm
Type:seamless/ERW/LSAW carbon steel pipe
W.T.:SCH10(3.05mm),SCH30(4.78mm),STD(6.02mm),SCH40(6.02mm),XS(8.56mm),SCH80(8.56mm),SCH120(11.13mm),SCH160(13.49mm),XXS(17.12mm),SGP(4.5mm)，DIN,JIS standard thickness

ANSI/ASME Standards

B36.10 Welded and Seamless Wrought Steel Pipe

Material

Q235,20#,Q345,A53B,A106B,API 5L B,X42,X46,X52,X60,X65,ST37.0,ST35.8,St37.2,St35.4/8,St42,St45,St52,St52.4,STP G38,STP G42,STPT42,STB42,STS42,STPT49,STS49

Hot-dip galvanizing line operates

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1>Steel is cleaned using a caustic solution(Rmoves oil/grease, dirt, and paint)

2>The caustic cleaning solution is rinsed off;

3>The steel is pickled in an acidic solution to remove mill scale;

4>The pickling solution is rinsed off;

5>Zinc ammonium chloride is applied to the steel to inhibit oxidation of the cleaned surface upon exposure to airThe steel is dipped into the molten zinc bath and held there until the temperature of the steel equilibrates with that of the bath;

6>The steel is cooled in a quench tank to reduce its temperature and inhibit undesirable reactions of the newly formed coating with the atmosphere.